U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Publication year rev 8022-1978 Remove constraint Publication year rev: 8022-1978 Publication Year 1978 Remove constraint Publication Year: 1978
Start Over

Search

1,947  Search Results

« Previous | 1 - 100 of 1,947 |
Number of results to display per page

Search Results

1. 13C nuclear magnetic resonance spectroscopy of cyanolipids and cyanolipid containing seed oils

Author:
Mikolajczak, K.L.; Weisleder, D.
Source:
Lipids 1978 v.13 no.7 pp. 514-516
ISSN:
0024-4201
Subject:
Sapindaceae; seed oils; chemical analysis; spectral analysis; esters; nitriles; nuclear magnetic resonance spectroscopy
Handle:
10113/28515
DOI:
10.1007/BF02533623

2. The 1973 Food Price Inflation

Author:
Albert Eckstein; Dale Heien
Source:
American journal of agricultural economics 1978 v.60 no.2 pp. 186-196
ISSN:
0002-9092
Subject:
acreage; agricultural economics; econometric models; feed grains; food prices; inflation; livestock; monetary policy
Abstract:
... This study analyzes the major causes of the food price inflation of 1973. In the approximate order of their importance, those causes were found to be domestic monetary policy, government acreage restrictions, the Soviet grain deal, world economic conditions, devaluation of the dollar, and price freeze II. Econometric models of the livestock and feed grains and meal economies were used to decompose ...
DOI:
10.2307/1240047

3. The 1974 biological survey of Nyumba ya Mungu reservoir, Tanzania: Concluding remarks

Author:
BAILEY, ROLAND G.; DENNY, PATRICK
Source:
Biological journal of the Linnean Society 1978 v.10 no.1 pp. 151-157
ISSN:
0024-4066
Subject:
Typha domingensis; animal communities; eutrophication; fish; fish production; fisheries; lakes; primary productivity; risk; rivers; surveys; Tanzania
Abstract:
... Hydrobiological events in Nyumba ya Mungu reservoir, a recent man-made lake in Tanzania, are reviewed in the light of those described for larger impoundments in other parts of Africa. An initial phase of rapid eutrophication and of high fish production has been replaced by a slower stabilization phase. At present the inflowing rivers supply a nutrient rich water and the level of primary production ...
DOI:
10.1111/j.1095-8312.1978.tb00009.x

4. 2′-Chloro-1-hydroxy-2-naphthanilide-4'- isothiocyanate — a New Cestodicidal Agent [1 ]

Author:
Harindra Singh; Satyavan Sharma; R. N. Iyer; J. C. Katiyar; A . B. Sen
Source:
Zeitschrift für Naturforschung 1978 v.33 no.5-6 pp. 447-448
ISSN:
1865-7125
Subject:
Hymenolepis nana; antiplatyhelmintic agents; chemical structure; oral administration; rats
Abstract:
... 2′-Chloro-1-hydroxy-2-naphthanilide-4′-isothiocyanate (4) has been synthesized as the structural analogue of yomesan (1) and was found to be active against experimental dwarf tapeworm Hymenolepis nana infection in rats at an oral dose of 7.5 mg/kg. ...
DOI:
10.1515/znc-1978-5-623

5. 6-D-glucopyranosyl fatty acid esters from Brassica napus pollen

Author:
Grove, M.D.; Spencer, G.F.; Pfeffer, P.E.; Mandava, N.; Warthen, J.D. Jr.; Worley, J.F.
Source:
Phytochemistry 1978 v.17 no.7 pp. 1187-1189
ISSN:
0031-9422
Subject:
Brassica napus; pollen; glycolipids; fatty acid esters; palmitic acid; oleic acid; linoleic acid; linolenic acid
Abstract:
... 6-d-Glucopyranosyl esters of palmitic, oleic, linoleic and linolenic acids were identified in Brassica napus (rape) pollen. These esters are inactive as plant growth promoters in the bean second-internode bioassay. ...
Handle:
10113/29844
DOI:
10.1016/S0031-9422(00)94312-7

6. 9,9 (10,10) bis(acetoxymethyl)octadecanoate esters as plasticizers for poly(vinyl chloride

Author:
Miller, W.R.; Pryde, E.H.
Source:
Journal of the American Oil Chemists' Society 1978 v.55 no.5 pp. 469-470
ISSN:
0003-021X
Subject:
stearic acid; fatty acid esters; plasticizers; poly(vinyl chloride)
DOI:
10.1007/BF02668485

7. AUber die Carotinoide Flavoxanthin und Chrysanthemaxanthin: H NMR. , 13C NMR. und Massen Spektren und absolute konfiguration (Kritische Uberprufung veroffentlichter chemischer und physikalischer Daten

Author:
Cadosch, H.; Vogeli, U.; Ruedi, P.; Eugster, C.H.
Source:
Helvetica chimica acta 1978 v.61 no.2 pp. 783-794
ISSN:
0018-019X
Subject:
nuclear magnetic resonance spectroscopy; isotopes; carbon; plant physiology; plant biochemistry
DOI:
10.1002/hlca.19780610226

8. Abnormal Densities Obtained by Liquid Crystallization of Thin Poly(Ethylene Terephthalate) Films

Author:
E.L. Lawton; D.M. Cates
Source:
Textile research journal 1978 v.48 no.8 pp. 478-481
ISSN:
0040-5175
Subject:
crystallization; fabrics; polyethylene terephthalates; textile fibers
Abstract:
... Whén poly(ethylene terephthalate) films arc crystallized by certain liquids, thin films exhibit abnormally low densities, in contrast to thick films which have the densities of semicrystalline polymer. Cavitation produced by the crystallizing liquid is considered responsible. Although thick films also undergo cavitation, any lasting effect is confined to the surface; the influence on density is no ...
DOI:
10.1177/004051757804800809

9. Abnormalities in avocado (Persea americana Mill.) ovule development

Author:
Tomer, E.; Gottreich, M.
Source:
Botanical gazette 1978 v.139 no.1 pp. 81-86
ISSN:
0006-8071
Subject:
plant damage
DOI:
10.1086/336972

10. Aboveground Production of Seven Marsh Plant Species in Coastal Louisiana

Author:
Charles S. Hopkinson; James G. Gosselink; Rolando T. Parrando
Source:
Ecology 1978 v.59 no.4 pp. 760-769
ISSN:
0012-9658
Subject:
Distichlis; Juncus; Phragmites; Sagittaria; Spartina; coasts; marshes; primary productivity; vegetation; Louisiana
Abstract:
... Results of a 2—yr evaluation of aboveground production of 7 plant species commonly found in Louisiana's coastal marshes show a generally higher level of production compared to other studies. In 5 of the 7 species significant growth occurred throughout the year. Calculated annual production in grams per square metre for each species was; Distichlis spicata–3237; Juncus roemerianus–3416; Phragmites ...
DOI:
10.2307/1938780

11. Abscission of Flowers and Fruits in Phaseolm vulgaris L. I. Cultivar Differences in Flowering Pattern and Abscission

Author:
Suranant Subhadrabandhu; M. W. Adams; D. A. Reicosky
Source:
Crop science 1978 v.18 no.5 pp. 893-896
ISSN:
0011-183X
Subject:
Phaseolus vulgaris; abscission; cultivars; flowers; greenhouses; probability; soups
Abstract:
... Developmental patterns and abscission of flowers and pods were studied in greenhouse and field experiments with three cultivars of dry beans (Phaseolus vulgaris L.). The pattern of flower production, pod retention, number of flowers produced, and percentage of reproductive structures abscised varied with cultivar. The pattern of flower production varied from a concentrated skewed pattern for culti ...
DOI:
10.2135/cropsci1978.0011183X001800050056x

12. Absorbent polymers from starch and flour through graft polymerization of acrylonitrile and comonomer mixtures

Author:
Fanta, G.F.; Burr, R.C.; Doane, W.M.; Russell, C.R.
Source:
Stärke = 1978 v.30 no.7 pp. 237-242
ISSN:
0038-9056
Subject:
corn flour; wheat flour; polymers; polymerization; corn starch; absorbents; nitriles; saponification; drying; absorbance; alkali treatment; corn meal; wheat starch
Handle:
10113/26595

13. Absorption Rates of Ammonium and Nitrate by Red Kidney Beans under Salt and Water Stress

Author:
J. N. E. Frota; T. C. Tucker
Source:
Soil Science Society of America journal 1978 v.42 no.5 pp. 753-756
ISSN:
0361-5995
Subject:
Phaseolus vulgaris; absorption; ammonium; dry matter accumulation; isotope dilution technique; kidney beans; nitrates; nitrogen; permeability; salinity; salt stress; sodium chloride; stable isotopes; total nitrogen; water stress; water uptake
Abstract:
... The purpose of this study was to gain additional knowledge regarding the influence of salinity and water deficit on plant uptake of NH₄⁺ and NO₃⁻. The absorption patterns of NH₄⁺ and NO₃⁻ by red kidney beans (Phaseolus vulgaris L.) were determined under normal conditions (control), NaCl treatment (salt stress), and carbowax treatment (water stress) using an inverse isotope dilution technique with ...
DOI:
10.2136/sssaj1978.03615995004200050020x

14. Accelerated Aging Studies of Normal and Segregating Chlorophyl Deficient Isolines of Pearl Millet

Author:
E. E. Roos; S. Sowa; G. W. Burton
Source:
Crop science 1978 v.18 no.2 pp. 231-233
ISSN:
0011-183X
Subject:
plant genetics; plant breeding; plant products; field crops
Abstract:
... Pearl millet (Pennisetum americanum (L.) Leeke) seeds were subjected to accelerated aging for various periods at temperatures of 21 and 32 C and relative humidities (RH) of 70 and 90%. Seeds stored at 32 C-90% RH rapidly lost germination capacity, while seeds stored at 21 C-70% RH lost viability more slowly. Seedlings apparently passed through an abnormal stage before dying. Isogenic lines heteroz ...
DOI:
10.2135/cropsci1978.0011183X001800020009x

15. Accessible conformations of amylose: a computer modeling study

Author:
French, A.D.; Murphy, V.G.; Kainuma, Keiji
Source:
Denpun kagaku = Journal of the Japanese Society of Starch Science 1978 v.25 no.3 pp. 171-176
Subject:
amylose; computer analysis; digital images; computer software; molecular conformation
Handle:
10113/44480

16. Accumulation Sites of A1 in Snapbean and Cotton Roots

Author:
G. Naidoo; J. McD. Stewart; R. J. Lewis
Source:
Agronomy journal 1978 v.70 no.3 pp. 489-492
ISSN:
0002-1962
Subject:
Gossypium hirsutum; Phaseolus vulgaris; acid soils; aluminum; bioaccumulation; calcium; cell walls; cotton; cytoplasm; green beans; lipids; nucleic acids; nutrient solutions; pH; root cap; scanning electron microscopes; toxicity
Abstract:
... Aluminum toxicity is an important growth-limiting factor in many acid soils. The exact site of A1 injury within roots is unknown. The objective of this study was to determine the site of A1 injury within roots of snapbeans (Phaseolus vulgaris L., ‘Dade’ and ‘Romano’) and cotton (Gossypium hirsutum L., ‘Hancock’) treated for 12 days with 20 mg/liter A1 in nutrient solution at pH 4.6. Location of A1 ...
DOI:
10.2134/agronj1978.00021962007000030031x

17. Accumulation and Redistribution Pattern of Dry Matter and N in Triticale and Wheat Varieties under Water Stress Condition

Author:
Pyare Lal; G. G. Reddy; M. S. Modi
Source:
Agronomy journal 1978 v.70 no.4 pp. 623-626
ISSN:
0002-1962
Subject:
Hapludolls; Triticosecale; Triticum aestivum; chaff; crop production; culms; cultivars; dry matter accumulation; field experimentation; leaves; nitrogen content; nitrogen fertilizers; nutrient use efficiency; seeds; silt loam soils; triticale; water stress; wheat; India
Abstract:
... Accumulation of dry matter and N in a cereal plant indicates its potentiality for yield, but its mobilization to the reproductive sink is important for higher economic yield. We studied this mobilization in triticale (Triticale hexaploide Lar.)), a recently developed crop which might compete with wheat (Triticum aestivum L.). The objective was to screen varieties of triticale relative to wheat for ...
DOI:
10.2134/agronj1978.00021962007000040023x

18. The Acetylene Inhibition Method for Short-term Measurement of Soil Denitrification and its Evaluation Using Nitrogen-13

Author:
M. Scott Smith; Mary K. Firestone; James M. Tiedje
Source:
Soil Science Society of America journal 1978 v.42 no.4 pp. 611-615
ISSN:
0361-5995
Subject:
acetylene; anaerobic conditions; denitrification; enzymes; mineral soils; nitrates; nitrogen; nitrous oxide; oxygen; slurries
Abstract:
... Acetylene was found to effectively inhibit the reduction of N₂O by anaerobic soils. With concentrations of C₂H₂ above 0.1 atm, added NO₃⁻ was quantitatively converted to N₂O, and added N₂O was reduced at an insignificant rate. Experiments with ¹³N demonstrated that at low soil nitrate concentrations at least 0.1 atm C₂H₂ was required for effective inhibition. Denitrification rates determined by ¹³ ...
DOI:
10.2136/sssaj1978.03615995004200040015x

19. Actinomycetes antagonistes de champignons et n'affectant pas le Rhizobium meliloti

Author:
Antoun, H.; Bordeleau, L.M.; Gagnon, C.; Lachance, R.A.
Source:
Canadian journal of microbiology 1978 v.24 no.5 pp. 558-562
ISSN:
0008-4166
Subject:
soil bacteria
DOI:
10.1139/m78-090

20. Active Learning, Control Theory, and Agricultural Policy

Author:
Gordon C. Rausser
Source:
American journal of agricultural economics 1978 v.60 no.3 pp. 476-490
ISSN:
0002-9092
Subject:
agricultural policy; data collection; econometrics; learning; natural resource economics; occupations; uncertainty
Abstract:
... In the evaluation of key agricultural policies, a number of critical uncertainties arise for which little in the way of empirical evidence has been accumulated. The typical departmentalization within the agricultural economics profession fails to offer any hope of properly assessing these uncertainties. One approach that integrates the separate tasks of system analysis, econometric estimation, opt ...
DOI:
10.2307/1239945

21. Adaptation of Reciprocal Full-Sib Selection in Sunflower Breeding Using Gibberellic Acid Induced Male Sterility

Author:
J. F. Miller; G. N. Fick
Source:
Crop science 1978 v.18 no.1 pp. 161-162
ISSN:
0011-183X
Subject:
plant genetics; plant breeding
Abstract:
... Gibberellic acid (GA₃) was evaluated for pollination control in branched sunflower (Helianthus annuus L.) male-fertility restorer lines. A 50 ppm concentration of GA₃, applied directly to the main head flower bud, reduced self-fertility to 2.4, 3.0, and 3.8% of the checks. Self-pollinated seed was obtained from secondary heads of treated plants. These results indicated that reciprocal full-sib sel ...
DOI:
10.2135/cropsci1978.0011183X001800010045x

22. Adaptation of the Soxhlet Extractor for Pedologic Studies

Author:
G. A. Singleton; L. M. Lavkulich
Source:
Soil Science Society of America journal 1978 v.42 no.6 pp. 984-986
ISSN:
0361-5995
Subject:
calcium; carbon dioxide; extractors; leachates; pH; soil; soil formation; weathering
Abstract:
... The use of the soxhlet apparatus has had limited success in its application to pedogenic weathering studies. Modified designs of the original soxhlet eliminated problems of sample inundation, erosion, and leachate contamination. The modifications, which utilized extraction thimbles, were made either by reducing the height (A) or completely removing (B) the siphon tube. B-modified extractors increa ...
DOI:
10.2136/sssaj1978.03615995004200060034x

23. Additional Sources of Monogenic Resistance in Corn to Helminthosporium turcicum

Author:
A. L. Hooker
Source:
Crop science 1978 v.18 no.5 pp. 787-788
ISSN:
0011-183X
Subject:
plant genetics; plant breeding; fungal diseases of plants; plant pathogenic fungi
Abstract:
... Seedlings and adult plants of 28 inbred lines, representing a diversity of endosperm types and cultivar origin, expressed chlorotic lesions when infected with Helminthosporium turcicum Pass. The resistance in each line was inherited as a single dominant gene. ...
DOI:
10.2135/cropsci1978.0011183X001800050024x

24. Adsorption Kinetics of Bacteriophage ΦX-174 on Soil

Author:
W. D. Burge; N. K. Enkiri
Source:
Journal of environmental quality 1978 v.7 no.4 pp. 536-541
ISSN:
0047-2425
Subject:
adsorption; bacteriophages; desorption; soil
Abstract:
... The adsorption of bacteriophage ΦX-174 by a soil followed classical square-root-of-time kinetics, indicating that the rate of adsorption was controlled by diffusion. These results, however, are explained by the heterogeneity of the virus population relative to adsorption rate. The presence of at least two virus populations distinguishable by the rates at which they are adsorbed by the soil and des ...
DOI:
10.2134/jeq1978.00472425000700040014x

25. Adsorption and Desorption of Paraquat in Acid Tropical Soils

Author:
A. S. R. Juo; O. O. Oginni
Source:
Journal of environmental quality 1978 v.7 no.1 pp. 9-12
ISSN:
0047-2425
Subject:
acid soils; adsorption; basalt; calcium chloride; desorption; paraquat; sedimentary rocks; sorption isotherms; tropical soils; Nigeria
Abstract:
... Adsorption of paraquat (1:1′-dimethyl 4:4′-bipyridylium chloride) by six common soil types from southern Nigeria was studied. Adsorption data conformed with linear Langmuir isotherm. Adsorption maximum (b) calculated from the Langmuir equation ranged from 1,200 to 7,500 µg/g of soil. The iron oxide-rich soil derived from basalts adsorbed the highest amount, while the strongly acidic soils derived ...
DOI:
10.2134/jeq1978.00472425000700010002x

26. Adsorption and Extractability of Molybdenum in Relation to Some Chemical Properties of Soil

Author:
N. Karimian; F. R. Cox
Source:
Soil Science Society of America journal 1978 v.42 no.5 pp. 757-761
ISSN:
0361-5995
Subject:
adsorption; ammonium oxalate; anion exchange resins; aqueous solutions; calcium carbonate; coastal plains; iron oxides; molybdenum; organic matter; pH; piedmont; soil chemical properties; sorption isotherms
Abstract:
... Development of a practical soil test for molybdenum (Mo) will depend on selection of the proper extractant. To achieve this, more knowledge is needed about Mo adsorption and its extractability, especially in relation to other soil properties. Adsorption of Mo from aqueous solutions was determined for eight soils from the Atlantic Coastal Plain and Piedmont regions. The data followed the Freundlich ...
DOI:
10.2136/sssaj1978.03615995004200050021x

27. Adsorption of Aldicarb By Clays and Soil Organo-Clay Complexes

Author:
James R. Supak; Allen R. Swoboda; Joe B. Dixon
Source:
Soil Science Society of America journal 1978 v.42 no.2 pp. 244-248
ISSN:
0361-5995
Subject:
Vertisols; adsorbents; adsorption; aldicarb; aluminum; calcareous soils; calcium; clay; illite; kaolinite; montmorillonite; sorption isotherms
Abstract:
... Adsorption experiments conducted with S-methyl-¹⁴C-aldicarb resulted in what appeared to be negative adsorption (exclusion) of the toxicant on Ca− and Al− saturated montmorillonite clays. Calculated exclusion volumes indicated that aldicarb did not penetrate the interlamellar region. Aldicarb was excluded from at least the first 16 layers of water on external surfaces of montmorillonite. Positive ...
DOI:
10.2136/sssaj1978.03615995004200020006x

28. Adsorption of Mercury(II) by Iron Hydrous Oxide Gel

Author:
D. G. Kinniburgh; M. L. Jackson
Source:
Soil Science Society of America journal 1978 v.42 no.1 pp. 45-47
ISSN:
0361-5995
Subject:
adsorption; chlorides; gels; iron; mercury; pH
Abstract:
... Freshly prepared iron hydrous oxide gel suspensions, 0.093M and 0.001M with respect to Fe, strongly adsorb Hg(II) from solutions containing 2.5 × 10⁻⁵M Hg(II) and 1.0 × 10⁻⁶M Hg(II), respectively. The pH at which 50% of the total adsorption occurred in the latter system is 4.3. In the presence of chloride (Cl/Hg(II) mole ratio of 4/1), the adsorption of Hg(II) is considerably reduced, with no sign ...
DOI:
10.2136/sssaj1978.03615995004200010010x

29. Adult Equivalent Scales: An Alternative Approach

Author:
Rueben C. Buse; Larry E. Salathe
Source:
American journal of agricultural economics 1978 v.60 no.3 pp. 460-468
ISSN:
0002-9092
Subject:
agricultural economics; children; elderly; food groups; fruits; household expenditure; models; pork; statistical analysis
Abstract:
... Adult equivalent scales were estimated for five food groups and total food consumed at home. The scales were specified as continuous functions of age and restrictions were placed on the scales so that they approximate the way an individual affects household food expenditures throughout his life. The scale function is easily incorporated into expenditure models, and statistical tests can be used to ...
DOI:
10.2307/1239943

30. Aflatoxin B1 and G1 production in developing Zea mays kernels from mixed inocula of Aspergillus flavus and Aspergillus parasiticus

Author:
Calvert, O.H.; Lillehoj, E.B.; Kwolek, W.F.; Zuber, M.S.
Source:
Phytopathology 1978 v.68 no.3 pp. 501-506
ISSN:
0031-949X
Subject:
corn; Zea mays; seeds; Aspergillus parasiticus; Aspergillus flavus; conidia; mixtures; aflatoxin G1; aflatoxin B1; inoculum; pericarp; thickness; plant damage
Handle:
10113/28679

31. Aflatoxin B1 production in an eight line diallel of Zea mays infected with Aspergillus flavus

Author:
Zuber, M.S.; Calvert, O.H.; Kwolek, W.F.; Lillehoj, E.B.; Kang, M.S.
Source:
Phytopathology 1978 v.68 no.9 pp. 1346-1349
ISSN:
0031-949X
Subject:
corn; aflatoxin B1; Zea mays; Aspergillus flavus; diallel analysis; heritability; inbred lines; general combining ability; specific combining ability; crossing; genotype
Abstract:
... Wide differences in aflatoxin B1 produced in maize grain were found among 28 possible single crosses from 8 randomly-selected inbred lines used as parents. Ears were artificially inoculated with conidia and in a diallel analysis of the aflatoxin B1 data, highly significant general combining ability effects were found but the specific combining ability effects were nonsignificant. These results sug ...
Handle:
10113/28676
DOI:
10.1094/Phyto-68-1346

32. Aflatoxin Contamination of Corn Before Harvest: Aspergillus flavus Association with Insects Collected from Developing Ears

Author:
E. B. Lillehoj; D. I. Fennell; W. F. Kwolek; G. L. Adams; M. S. Zuber; E. S. Horner; N. W. Widstrom; H. Warren; W. D. Guthrie; D. B. Sauer; W. R. Findley; A. Manwiller; L. M. Josephson; A. J. Bockholt
Source:
Crop science 1978 v.18 no.6 pp. 921-924
ISSN:
0011-183X
Subject:
Zea mays; corn; crop damage; insect pests; plant pests; Ostrinia nubilalis; Spodoptera frugiperda; larvae; Aspergillus flavus; microbial contamination; aflatoxins; fungal diseases of plants; seeds; corn ears; geographical variation; Helicoverpa zea; United States
Abstract:
... The study examined the relationship of Aspergillus flavus Link ex Fr. in insects collected from developing ears and aflatoxin contamination of the kernels of corn (Zea mays L.). In 1976 two hybrids adapted for growth in the South and two hybrids adapted to the Corn Belt were grown at 11 diverse locations in the USA. Planting and harvest dates were staggered to examine maturity factors. Of 1621 ins ...
Handle:
10113/26137
DOI:
10.2135/cropsci1978.0011183X001800060002x

33. Aflatoxin contamination of field corn: evaluation of regional test plots for early detection

Author:
Lillehoj, E.B.; Kwolek, W.F.; Zuber, M.S.; Calvert, O.H.; Horner, E.S.; Widstrom, N.W.; Guthrie, W.D.; Scott, G.E.; Thompson, D.L.; Findley, W.R.; Bockholt, A.J.
Source:
Cereal chemistry 1978 v.55 no.6 pp. 1007-1013
ISSN:
0009-0352
Subject:
Zea mays; seeds; corn ears; fungal diseases of plants; geographical variation; aflatoxin B1; microbial contamination; corn; climatic factors; Aspergillus flavus; United States
Abstract:
... A commercial hybrid adapted for growth in the S and a hybrid adapted to the Corn Belt were grown at 9 diverse locations in the US. Incidence of aflatoxin during ear development ranged from 0 in the Corn Belt samples to 75% in Fla. tested maize, with no pattern of hybrid difference in toxin occurrence. Incubation of test ears for 7-10 days at 28 deg C immediately after harvest did not change toxin ...
Handle:
10113/25381

34. Aflatoxin formation on sixteen soybean varieties

Author:
Shotwell, O.L.; Vandegraft, E.E.; Hesseltine, C.W.
Source:
Journal of the Association of Official Analytical Chemists 1978 v.61 no.3 pp. 574-577
ISSN:
0004-5756
Subject:
Glycine max; soybeans; varieties; Aspergillus flavus; Aspergillus parasiticus; inoculation methods; aflatoxins; biosynthesis; strain differences
Abstract:
... 16 commercial var. of soybeans were each inoculated separately with 5 isolates of fungi from the Aspergillus flavus series to determine varietal differences in supporting aflatoxin production. The isolates were 2 strains of A. parasiticus (NRRL 2999 and NRRL 3145), 2 strains of A. flavus (NRRL 3357 and NRRL 3353), and 1 strain from a new variant of A. flavus (NRRL 3251). Levels of aflatoxin formed ...
Handle:
10113/28411

35. Aflatoxin in cotton after harvesting

Author:
Griffin, A.C.; Schroeder, H.W.
Source:
Phytopathology 1978 v.68 no.1 pp. 119-122
ISSN:
0031-949X
Subject:
water content; aflatoxins; Gossypium hirsutum; cotton; cottonseed; postharvest treatment; cotton ginning
Abstract:
... Three harvest-storage treatments were applied to seed cotton in the Yazoo-Mississippi Delta area to determine their effects on development of aflatoxins in cottonseed during the period between harvesting and ginning. The experimental treatments were: (i) cotton harvested wet with dew and stored without drying, (ii) cotton harvested wet with dew and gin-dried before storage, and (iii) cotton harves ...
Handle:
10113/32776

36. Aflatoxin inactivation in corn by ammonia gas: laboratory trials

Author:
Brekke, O.L.; Stringfellow, A.C.; Peplinski, A.J.
Source:
Journal of agricultural and food chemistry 1978 v.26 no.6 pp. 1383-1389
ISSN:
0021-8561
Subject:
ammonia; detoxification (processing); food contamination; aflatoxin B1; microbial contamination; corn; chemical treatment
DOI:
10.1021/jf60220a050
PubMed:
730950

37. Age of Soil Landscapes in the Coastal Plain of North Carolina

Author:
R. B. Daniels; E. E. Gamble; W. H. Wheeler
Source:
Soil Science Society of America journal 1978 v.42 no.1 pp. 98-105
ISSN:
0361-5995
Subject:
Holocene epoch; Pleistocene epoch; Pliocene epoch; aerosols; age of soil; coastal plains; drainage; landscapes; sediments; soil formation; topographic slope; weathering; North Carolina
Abstract:
... A stratigraphic and geomorphic study of surficial sediments in the Neuse drainage was completed as part of a general study of the relations between geomorphology and soils in the Coastal Plain of North Carolina. The depositional-erosional surfaces on the interstream divides have been stable since they were formed, or there have been no recognizable additions or removals on these surfaces except fo ...
DOI:
10.2136/sssaj1978.03615995004200010022x

38. Agricultural trade relations between the EC and temperate food exporting countries

Author:
Tangermann, S.; European Association of Agricultural Economists
Source:
European review of agricultural economics 1978 v.5 no.3/4 pp. 201-219
ISSN:
0165-1587
Subject:
European Union
DOI:
10.1093/erae/5.3-4.201-a

39. Agriculture's Three Economies in a Changing Resource Environment

Author:
Harold F. Breimyer
Source:
American journal of agricultural economics 1978 v.60 no.1 pp. 37-47
ISSN:
0002-9092
Subject:
agricultural economics; industrialization; industry; livestock; prices; raw materials; United States
Abstract:
... For many years abundant and relatively inexpensive industrial raw materials contributed to a resource environment favoring industrialization of U.S. agriculture. Their gradual depletion and rising prices now create a counter pressure. The pace of industrialization has slowed, with different manifestations in the three economies of agriculture—crops, livestock, and marketing. The economics of extra ...
DOI:
10.2307/1240159

40. Agronomic Cropping for Maximum Biomass Production

Author:
R. Kent Crookston; Carl A. Fox; David S. Hill; Dale N. Moss
Source:
Agronomy journal 1978 v.70 no.6 pp. 899-902
ISSN:
0002-1962
Subject:
Hapludolls; Secale cereale; Sorghum bicolor subsp. drummondii; Zea mays; agronomy; biomass production; clay loam soils; continuous cropping; corn; double cropping; petroleum; photosynthesis; potential energy; silt loam soils; winter rye; Minnesota
Abstract:
... With recent widespread awareness of dwindling petroleum supplies, considerable attention has been directed towards plants as photosynthetic energy converters. The purpose of this 3-year study was to investigate the bioproductivity of agronomic crops as a potential energy source in Minnesota. Experiments were conducted in the field at St. Paul on a Waukegan silt loam (Typic Hapludoll) and at Waseca ...
DOI:
10.2134/agronj1978.00021962007000060002x

41. Alfalfa Root Development and Shoot Regrowth in Compact Soil of Wheel Traffic Patterns

Author:
D. W. Grimes; W. R. Sheesley; P. L. Wiley
Source:
Agronomy journal 1978 v.70 no.6 pp. 955-958
ISSN:
0002-1962
Subject:
Medicago sativa; Xerorthents; alfalfa; greenhouse experimentation; harvesting equipment; regrowth; root growth; sandy loam soils; shoots; soil compaction; soil density; traffic; wheels
Abstract:
... Reduced growth and fewer plants are common in wheel paths of post harvest equipment in alfalfa (Medicago sativa L.) fields of the San Joaquin Valley. Up to 70% of the soil surface may be covered by equipment wheels in a single harvest. Field and glasshouse studies were conducted to quantify plant and soil responses to wheel traffic in confined paths scheduled to simulate harvest operations. Three ...
DOI:
10.2134/agronj1978.00021962007000060016x

42. Alfalfa Water Use and Production on Dryland and Irrigated Sandy Loam

Author:
J. W. Bauder; A. Bauer; J. M. Ramirez; D. K. Cassel
Source:
Agronomy journal 1978 v.70 no.1 pp. 95-99
ISSN:
0002-1962
Subject:
Medicago; agricultural land; alfalfa; arid lands; drainage; dry matter accumulation; evapotranspiration; experimental design; fertilizer application; forage production; growing season; irrigation rates; land use; management systems; regression analysis; sandy loam soils; soil properties; soil water; tensiometers; water stress; water use efficiency
Abstract:
... Field studies were conducted during a 4-year period to determine “Vernal“ alfalfa (Medicago satva L.) dry matter yield in response to irrigation and fertilization variables. In the Northern Great Plants alfalfa forage production contributes significantly to overall agricultural land use; consequently optimization of resources use is desirable. Limited available information has created a need for s ...
DOI:
10.2134/agronj1978.00021962007000010022x

43. Alfalfa Weevil Resistance Mechanism Characterized by Larval Convulsions

Author:
T. E. Thompson; R. E. Shade; J. D. Axtell
Source:
Crop science 1978 v.18 no.2 pp. 208-209
ISSN:
0011-183X
Subject:
Hypera postica; Medicago sativa; alfalfa; antibiosis; clones; cultivars; insect resistance; insects; larval development; mortality; pupation; screening; seizures; Peru
Abstract:
... While screening 150 alfalfa (Medicago sativa L.) introductions for resistance to the alfalfa weevil [Hypera postica (Gyllenhal)], a new resistance mechanism was discovered in P.I. 247790 from Peru. A portion of the weevil larvae reared on this introduction convulsed, dehydrated, and died before pupation. One clone produced up to 20% convulsing larvae and 40% mortality. Due to the large degree of v ...
DOI:
10.2135/cropsci1978.0011183X001800020003x

44. Alfalfa Winter Injury, Survival, and Vigor Determined from Aerial Photographs

Author:
V. R. Wallen; H. R. Jackson
Source:
Agronomy journal 1978 v.70 no.6 pp. 922-926
ISSN:
0002-1962
Subject:
Medicago sativa; aerial photography; alfalfa; cameras; drainage; image interpretation; photographs; plant breeders; soil water; spring; surveys; vigor; winter
Abstract:
... Some of the difficulties of assessing the physiological condition of an experimental plant population are the necessarily repetitive observations and the extensive time required to accomplish a thorough survey. Based on earlier work by the authors, a study was conducted to determine if aerial photographs of a plot of alfalfa (Medicago sativa L.) could provide information on plant survival and vigo ...
DOI:
10.2134/agronj1978.00021962007000060007x

45. Alfalfa Yield, Specific Leaf Weight, C02 Exchange Rate, and Morphology

Author:
R. H. Hart; R. B. Pearce; N. J. Chatterton; G. E. Carlson; D. K. Barnes; C. H. Hanson
Source:
Crop science 1978 v.18 no.4 pp. 649-653
ISSN:
0011-183X
Subject:
Medicago sativa; alfalfa; carbon dioxide; forage; forage yield; greenhouses; leaf area; leaves; selection index; specific leaf weight
Abstract:
... Alfalfa (Medicago sativa L.) clones differ widely in CO₂ exchange rates (CER) and in specific leaf weights (SLW); CER is correlated with SLW. If high forage yield could be shown to be associated with high CER, selection for high CER or SLW should result in improved forage yield. We selected plants with extremely high or extremely low SLW from several alfalfa populations and measured forage yields ...
DOI:
10.2135/cropsci1978.0011183X001800040031x

46. Alfalfa protein fractionation by ultrafiltration

Author:
D. E. EAKIN; R. PAUL SINGH; G. O. KOHLER; BENNY KNUCKLES
Source:
Journal of food science 1978 v.43 no.2 pp. 544-547
ISSN:
0022-1147
Subject:
alfalfa; alfalfa protein; fractionation; juices; temperature; turbulent flow; ultrafiltration
Abstract:
... Ultrafiltration was used to fractionate the chloroplastic and the soluble protein components of alfalfa juice. In agreement with trends predicted by theoretical considerations, permeate volume flux increased with increased feed velocity, pressure and temperature, and decreased with increased feed concentration. The recovery of the protein in the permeate increased with increased feed velocity and ...
DOI:
10.1111/j.1365-2621.1978.tb02350.x

47. Algal calcification in some codiaceae (chlorophyta): ultrastructure and location of skeletal deposits1, 2

Author:
Lothar Böhm; Dieter Fütterer; Elfriede Kaminski
Source:
Journal of phycology 1978 v.14 no.4 pp. 486-493
ISSN:
0022-3646
Subject:
Halimeda; Penicillus; Rhipocephalus; Rhodophyta; Udotea; calcification; calcium carbonate; calcium oxalate; carbon dioxide; cell walls; cobalt; cortex; cytoplasm; direct contact; gases; oxygen; seawater; solutes; ultrastructure
Abstract:
... The capitular filaments of Penicillus and Rhipocephalus consist of an inner tube containing the cytoplasm and an outer calcified sheath. The sheath originates at the cell wall and differentiates into several layers which form the outer filament wall. CaCO₃ is deposited between organic layers within the sheath and is not in direct contact with the seawater. Pores within the sheath, usually uncalcif ...
DOI:
10.1111/j.1529-8817.1978.tb02474.x

48. Alkaloid Levels in Phalaris aquatica L. as Affected by Environment

Author:
Donald M. Ball; Carl S. Hoveland
Source:
Agronomy journal 1978 v.70 no.6 pp. 977-981
ISSN:
0002-1962
Subject:
Phalaris aquatica; agronomy; alkaloids; cattle; drought; forage; greenhouses; leaves; nitrogen; pastures; probability; sandy loam soils; sheep; toxicity; water stress; Australia; Southeastern United States
Abstract:
... Phalaris aquatica L. (also referred to as P. tuberosa L.), a species widely grown in Australia, may have forage potential in the southeastern U.S. and, therefore, has been made the subject of an Auburn University breeding program. In Australia, however, livestock toxicities have been reported from alkaloids in the forage. Field, greenhouse, and environmental chamber experiments were conducted to d ...
DOI:
10.2134/agronj1978.00021962007000060021x

49. Allele Determining Rugate Fruit Surface in Cotton

Author:
Joshua A. Lee
Source:
Crop science 1978 v.18 no.2 pp. 251-254
ISSN:
0011-183X
Subject:
plant genetics; plant breeding
Abstract:
... Rugate fruit surface in cotton (Gossypium hirsutum L.) is accompanied by dense glandulosity and correlates with increased terpenoid aldehyde level in flower buds. Rugate carpellary surface is determined in M. J. Lukefahr's XG-15 line by the allele Glʳ ₃ in the homozygous state acting in conceit with an array of other gland-determining alleles at other loci. A sister line, 3-T, is homozygous for Gl ...
DOI:
10.2135/cropsci1978.0011183X001800020014x

50. Allelopathy among prairie grasses and its possible ecological significance

Author:
Bokhari, U.G.
Source:
Annals of botany 1978 v.42 no.1 pp. 127-136
ISSN:
0305-7364
Subject:
Bouteloua dactyloides; Bouteloua gracilis; Pascopyrum smithii; allelopathy; chemical composition; ecosystems; grasses; growth chambers; irrigation; phenolic compounds; phenology; phytotoxicity; shortgrass prairies
Abstract:
... The phytotoxic effect of four kinds of litter and three kinds of fresh material extracts of blue grama and western wheatgrass on seed germination of blue grama, western wheatgrass and buffalo grass was tested. The four kinds of litter were collected from the Ecosystem Stress Area at the native shortgrass prairie site. These included litter from control, fertilized, irrigated, and fertilized plus i ...
DOI:
10.1093/oxfordjournals.aob.a085432

51. Alphaxolone-alphadolone anaesthesia in laboratory animals

Author:
C. J. Green; M. J. Halsey; S. Precious; B. Wardley-Smith
Source:
Laboratory animals 1978 v.12 no.2 pp. 85-89
ISSN:
1758-1117
Subject:
Primates; anesthesia; cats; ferrets; hamsters; intravenous injection; laboratory animals; mice; rabbits; rats; sedation; swine
Abstract:
... The anaesthetic steroid combination alphaxolone-alphadolone is a well-established short-acting inject-able agent for cats and primates. It can be recommended for intravenous administration to rats, rabbits, neonatal pigs, mice and hamsters. It has limited value in mice and hamsters by the intraperitoneal route, but provides sedation in ferrets and neonatal pigs when injected intramuscularly. It ca ...
DOI:
10.1258/002367778780953206
PubMed:
672181

52. Alteration of tobacco hornworm, manduca sexta, haemolymph composition by canavanine-amino acid mixtures

Author:
DAHLMAN, D.L.
Source:
Entomologia experimentalis et applicata 1978 v.24 no.3 pp. 327-335
ISSN:
0013-8703
Subject:
Manduca sexta; arginine; artificial diets; canavanine; ecdysis; hemolymph; larvae; lipids; proteins; trehalose
Abstract:
... Larvae of the 5th-instar tobacco hornworm, Manduca sexta (L.), were fed artificial diets containing either 2.5 mM canavanine or 2.5 mM canavanine + 25 mM arginine. Haemolymph volume and concentrations of total carbohydrate, trehalose, amino acids, proteins, lipids and percent solids were determined daily through the day preceding larval-pupal ecdysis. Consumption of diet containing only canavanine ...
DOI:
10.1111/j.1570-7458.1978.tb02789.x

53. Alterations of Micas and Feldspars During Microbial Formation of Basic Ferric Sulfates in the Laboratory

Author:
K.C. Ivarson; G.J. Ross; N.M. Miles
Source:
Soil Science Society of America journal 1978 v.42 no.3 pp. 518-524
ISSN:
0361-5995
Subject:
Acidithiobacillus ferrooxidans; X-ray diffraction; acid sulfate soils; ammonium; bacteria; feldspar; glycerol; illite; iron; jarosite; magnesium; oxidation; potassium; sodium; stoichiometry; sulfates
Abstract:
... During the oxidation of ferrous iron in solution by the iron-oxidizing bacterium, Thiobacillus ferrooxidans, formation of jarosite [KFe₃(SO₄)₂(OH)₆] occurred in the presence of glauconite, illite and microcline whereas natrojarosite [NaFe₃(SO₄)₂(OH)₆] was formed in the presence of albite. The required K and Na were supplied by these minerals and considerable amounts (up to 12%) of jarosite were fo ...
DOI:
10.2136/sssaj1978.03615995004200030029x

54. Alternate Drying and Rewetting Effects on Chemical and Physical Properties and Moisture-Salinity Relationships of a Histosol

Author:
M. Giskin; I. Levin
Source:
Agronomy journal 1978 v.70 no.3 pp. 445-447
ISSN:
0002-1962
Subject:
Histosols; air drying; irrigation rates; irrigation water; nitrates; pH; physical properties; soil organic matter; soil water; water content
Abstract:
... Under field conditions, cycles of drying and wetting take place naturally. Extreme fluctuations in the moisture content of Histosols have been reported to affect a number of soil processes and constituents. The purpose of the study was to investigate the possible influences on soil management of changes in chemical and physical properties resulting from a Histosol being carried through several suc ...
DOI:
10.2134/agronj1978.00021962007000030020x

55. Alternative Estimates of Static and Dynamic Demand Systems for Canada

Author:
Richard Green; Zuhair A. Hassan; S. R. Johnson
Source:
American journal of agricultural economics 1978 v.60 no.1 pp. 93-107
ISSN:
0002-9092
Subject:
agricultural economics; demand elasticities; income; models; Canada; United States
Abstract:
... Selected static and dynamic demand systems are applied to Canadian data for the period 1947–1972. Four commodity groups—durables, semi‐durables, services and nondurables—are used for the major portion of the analysis. For the static systems, results for nine commodity groups are provided as a comparison. Income and price elasticity estimates, following from the static systems are, with the excepti ...
DOI:
10.2307/1240165

56. Aluminum Tolerance of Soybean Cultivars Based on Root Elongation in Solution Culture Compared with Growth in Acid Soil

Author:
J. B. Sartain; E. J. Kamprath
Source:
Agronomy journal 1978 v.70 no.1 pp. 17-20
ISSN:
0002-1962
Subject:
Glycine max; Paleaquults; acid soils; aluminum; calcium; cultivars; greenhouse experimentation; metal tolerance; plant tissues; root growth; roots; soybeans; subsoil; toxicity
Abstract:
... Growth of soybean [Glycine max (L.) Merr.] roots into acid subsoils and utilization of subsoil moisture is limited in many soils of the southeastern U. S. because of Al toxicity. Laboratory and greenhouse experiments were conducted to obtain information on tolerance of soybean cultivars which would be helpful in selection of cultivars best adapted to acid subsoils. Root elongation measurements wer ...
DOI:
10.2134/agronj1978.00021962007000010005x

57. Amino Acid Composition of Cicer Milkvetch Forage

Author:
M. S. Kaldy; S. Smoliak; M. R. Hanna
Source:
Agronomy journal 1978 v.70 no.1 pp. 131-132
ISSN:
0002-1962
Subject:
Astragalus cicer; Chernozems; Medicago sativa; alfalfa; amino acid composition; animals; cereal proteins; forage legumes; methionine; protein value; Canada
Abstract:
... Cicer milkvetch (Astragalus cicer L.) is a hardy and persistent forage legume that has potential in some regions of western Canada. This study was undertaken to determine the amino acid composition and protein quality of cicer milkvetch in comparison with that of alfalfa (Medicago sativa L.). Samples of both legumes were harvested at the mid- to late-bud stage of growth from a replicated field tes ...
DOI:
10.2134/agronj1978.00021962007000010030x

58. Amino Acid Scores of Dry Bean Proteins Fractionated by Deae Cellulose

Author:
J. T. Vigue; H. V. Marsh; P. L. Pellett
Source:
Agronomy journal 1978 v.70 no.6 pp. 1107-1108
ISSN:
0002-1962
Subject:
Phaseolus vulgaris; agronomy; cellulose; chromatography; cultivars; dry beans; genotype; humans; isoleucine; leucine; lysine; phenylalanine; phosphates; protein sources; sulfur; sulfur amino acids; threonine; tyrosine; valine
Abstract:
... Dry bean (Phaseolus vulgaris L.) are an additional source of protein for human consumption, but the crop has never been exploited as a protein source. The objective of this study was to determine if dry beans exhibit a wide range of sulfur amino acids in proteins fractionated by DEAE chromatography. Protein was extracted from two cultivars (‘Sanilac’ and ‘Bush Blue Lake 290’) and one genotype (P.I ...
DOI:
10.2134/agronj1978.00021962007000060052x

59. Ammonia Exchange Over a Corn Crop

Author:
O. T. Denmead; R. Nulsen; G. W. Thurtell
Source:
Soil Science Society of America journal 1978 v.42 no.5 pp. 840-842
ISSN:
0361-5995
Subject:
Zea mays; ammonia; corn; soil-plant-atmosphere interactions; uptake mechanisms
Abstract:
... A micrometeorological technique was used to calculate the net transfer of NH₃ between a corn crop and the atmosphere. On the 10 days of measurement, there was continual interchange of NH₃ between crop and atmosphere with a strong indication of a diurnal cycle. Ammonia absorption by the plant-soil system (downward transfer of NH₃) predominated when the soil surface was dry, but sustained losses of ...
DOI:
10.2136/sssaj1978.03615995004200050039x

60. Ammonia Volatilization Losses from Flooded Rice Soils

Author:
D. S. Mikkelsen; S. K. De Datta; W. N. Obcemea
Source:
Soil Science Society of America journal 1978 v.42 no.5 pp. 725-730
ISSN:
0361-5995
Subject:
algae; ammonia; ammonium; carbon dioxide; clay; diurnal variation; gases; heterotrophs; nitrogen; nitrogen fertilizers; pH; paddies; photosynthesis; rice soils; solutes; total nitrogen; volatilization
Abstract:
... The pH of the flood water in rice fields is largely determined by the chemical equilibria that exist between the CO₂ balance achieved by the aquatic biota and the various solutes, solids, and gases in the water. Water pH values undergo diurnal changes, increasing by midday to values as high as pH 9.5–10 and decreasing as much as 2–3 pH units during the night. The pH of shallow flood water is great ...
DOI:
10.2136/sssaj1978.03615995004200050014x

61. Ammonia Volatilization Reaction Mechanism Between Ammonium Sulfate and Carbonate Systems

Author:
S. E. Feagley; L. R. Hossner
Source:
Soil Science Society of America journal 1978 v.42 no.2 pp. 364-367
ISSN:
0361-5995
Subject:
ammonia; ammonium carbonate; ammonium sulfate; barium carbonate; calcium carbonate; carbon dioxide; gases; magnesium carbonate; pH; reaction mechanisms; silt loam soils; volatilization
Abstract:
... The mechanism by which NH₃ is lost in the reaction between (NH₄)₂ SO₄ and CaCO₃, BaCO₃, MgCO₃, and a calcareous Norwood silt loam soil was investigated. Results obtained in the laboratory indicated that the reaction proceeded through an NH₄HCO₃ intermediate. The ratio of NH₃ to CO₂ volatilized approached a 2:1 ratio of NH₃/CO₂ gases for the first 2 to 6 hours of the reaction. It then decreased to ...
DOI:
10.2136/sssaj1978.03615995004200020032x

62. Ammonia Volatilization from Sewage Sludge Applied in the Field

Author:
E. G. Beauchamp; G. E. Kidd; G. Thurtell
Source:
Journal of environmental quality 1978 v.7 no.1 pp. 141-146
ISSN:
0047-2425
Subject:
aerodynamics; air flow; air temperature; ammonia; ammonium nitrogen; application rate; diurnal variation; sewage sludge; soil; volatilization; wind speed
Abstract:
... Volatilization of ammoniacal nitrogen from newly applied anaerobically digested sewage sludge was measured in the field using an aerodynamic method in May and Oct. for 5- and 7-day periods, respectively. Sludge was applied in a circular area of 0.405 ha at rates of 116,480 kg/ha (150 kg NH₄⁺-N/ha) and 134,400 kg/ha (89 kg NH₄⁺-N/ha) in the May and Oct. experiments, respectively. Windspeed and atmo ...
DOI:
10.2134/jeq1978.00472425000700010030x

63. Analyses of a Dominant Male-Sterile Character in Upland Cotton. I. Cytological Studies

Author:
D. T. Bowman; J. B. Weaver; D. B. Walker
Source:
Crop science 1978 v.18 no.5 pp. 730-736
ISSN:
0011-183X
Subject:
plant morphology; plant anatomy
Abstract:
... Cytological observations of microsporogenesis breakdown were used to differentiate a new dominant malesterile character in Upland cotton, Gossypium hirsutum L., from the two known dominant male steriles, Ms₄ and Ms₇. Unlike the Ms₇ genotype where breakdown is either premeiotic or occurs during early stages of meiosis, and unlike the Ms₇ genotype where the latest reported breakdown in microsporogen ...
DOI:
10.2135/cropsci1978.0011183X001800050009x

64. Analysis of Potato Growth Under Differing P Regimes. II. Time by P-status Interactions for Growth and Leaf Efficiency

Author:
R. E. McCollum
Source:
Agronomy journal 1978 v.70 no.1 pp. 58-67
ISSN:
0002-1962
Subject:
Solanum tuberosum; Umbraquults; canopy; crop yield; death; developmental stages; dry matter accumulation; equations; fertilizer application; growth curves; latitude; leaf area; leaf area index; leaves; net assimilation rate; ontogeny; phosphorus; phosphorus fertilizers; potatoes; tubers
Abstract:
... Few full-season studies of potato (Solarium tuberosum L.) growth under mid-latitude environments have been conducted. Furthermore, published reports about effects of nutrient status on leaf efficiency in any species are inconclusive. Hence, the effects of factorially combined levels of initial soil P (SP = 35, 66, and 110 kg/ha) and row-applied fertilizer P (FP = 0, 28, and 56 kg/ha) on dry matter ...
DOI:
10.2134/agronj1978.00021962007000010014x

65. An Analysis of Sensible and Latent Heat Flow in a Partially Frozen Unsaturated Soil

Author:
M. Fuchs; G. S. Campbell; R. I. Papendick
Source:
Soil Science Society of America journal 1978 v.42 no.3 pp. 379-385
ISSN:
0361-5995
Subject:
equations; freeze-thaw cycles; freezing; frozen soils; heat flow; latent heat; silt loam soils; soil water; solutes; temperate soils; temperature; thawing; thermal conductivity
Abstract:
... A heat flow theory has been developed which can be used to predict freezing and thawing cycles of a temperate soil. The latent heat of fusion is incorporated into the classical heat flow equation with the heat capacity and the thermal conductivity of the soil modified to include terms which account for the phase transformation. Computations for a Palouse silt loam soil show that the ice-liquid pha ...
DOI:
10.2136/sssaj1978.03615995004200030001x

66. An Analysis of Species Dissimilarity Using Multiple Environmental Variables

Author:
David P. Dyer
Source:
Ecology 1978 v.59 no.1 pp. 117-125
ISSN:
0012-9658
Subject:
data collection; environmental factors; linear models; variance
Abstract:
... A linear model is developed for species dissimilarity. The model, which potentially can be used in conjunction with any species dissimilarity index, is designed for data sets which involve both multiple species and multiple environmental variables. The total species dissimilarity is divided into components with 1 component being assigned to each environmental variable or interaction of environment ...
DOI:
10.2307/1936637

67. Analysis of a hybrid swarm between Acacia brachybotrya and A. calamifolia (Leguminosae)

Author:
LEACH, G.J.; WHIFFIN, T.
Source:
Botanical journal of the Linnean Society 1978 v.76 no.1 pp. 53-69
ISSN:
0024-4074
Subject:
Acacia; backcrossing; flavonoids; hybridization; hybrids; parents; plant ecology; pollen
Abstract:
... A hybrid swarm between Acacia brachybotrya and A. calamifolia, involving plants referable to A. grayana, was studied in detail. Plants representing the range of variation found within the hybrid swarm were examined morphologically, chemically and ecologically in an attempt to document hybridisation and to determine their status. Plants referable to A. grayana are confirmed as hybrids, and other in ...
DOI:
10.1111/j.1095-8339.1978.tb01498.x

68. Analysis of fats and oils

Author:
Dutton, H.J.
Source:
Journal of the American Oil Chemists' Society 1978 v.55 no.11 pp. 806-808
ISSN:
0003-021X
Subject:
chemical analysis; plant fats and oils; oilseeds; hydrogenated oils
Abstract:
... Analytical information on fats and oils is required for trading, quality control, nutritional labeling and forensics. Development of analytical procedures was one of the historical reasons for the organization of the Society of Cotton Products Analysits; it continues as a major effort of the successor organization, the American Oil Chemists' Society, through its Uniform Methods Committee and final ...
Handle:
10113/28510
DOI:
10.1007/BF02682652

69. Analysis of microsecond fluorescence yield and delayed light emission changes after a single flash in pea chloroplasts: effects of mono- and divalent cations

Author:
Wong, D.; Govindjee.; Jursinic, P.; Symposium on Primary Photoprocesses in Photosynthesis: Ultrafast Reactions, San Juan, 1977.
Source:
Photochemistry and photobiology 1978 v.28 no.6 pp. 963-974
ISSN:
0031-8655
Subject:
reaction kinetics; magnesium chloride; fluorescence; Pisum sativum; cations; electron transfer; photochemical reactions; photosystem II; sodium chloride; yields; chloroplasts
Handle:
10113/25273
DOI:
10.1111/j.1751-1097.1978.tb07735.x

70. An Analysis of the Bending and Shear Properties of Woven, Double-Knitted, and Warp-Knitted Outerwear Fabrics

Author:
Viki L. Gibson; Ronald Postle
Source:
Textile research journal 1978 v.48 no.1 pp. 14-27
ISSN:
0040-5175
Subject:
asymmetry; bending strength; deformation; finishing; hysteresis; polyesters; textile fibers; wool; woolen fabric
Abstract:
... Mechanical properties of a wide range of commercially-produced outerwear fabrics have been analyzed in terms of the elastic and frictional resistance to bending and shear deformations. The fabrics tested include wool and wool-synthetic blend woven fabrics, wool and textured polyester double-knits, and synthetic warp-knits; some plain single jersey knitted fabrics are also included for comparison p ...
DOI:
10.1177/004051757804800103

71. Analysis of the Prompt Fluorescence Induction by Means of Computer Simulation of the Primary Photosynthetic Reactions

Author:
Christian Holzapfel
Source:
Zeitschrift für Naturforschung 1978 v.33 no.5-6 pp. 402-407
ISSN:
1865-7125
Subject:
computer simulation; dark adaptation; electrochemistry; electron transfer; fluorescence; photophosphorylation; thylakoids
Abstract:
... The induction phenomenon of prompt fluorescence of the photosynthetic system in green plants reflects the adaptation of the electron transport system from a dark adapted state to a steady state under light condition. The appearance of the P-peak in the prompt fluorescence induction curve is explained by the decay of the electrochemical gradient across the thylakoid membrane in the dark. The decay ...
DOI:
10.1515/znc-1978-5-615

72. An Analytical Framework for Extension Community Development Programming in Local Government

Author:
George R. McDowell
Source:
American journal of agricultural economics 1978 v.60 no.3 pp. 416-424
ISSN:
0002-9092
Subject:
agricultural economics; community development; local government; politics; resource management
Abstract:
... Current Extension programming in community development, much of it directed at local government problems, appears a potpourri of stylistic approaches. The public choice paradigm explicitly establishes a theoretical basis for the view that government's primary role is providing for resolution of the constant and inevitable conflicts between the values of citizens. It views the level and mix of serv ...
DOI:
10.2307/1239938

73. Analytical Properties of the Soluble, Metal-complexing Fractions in Sludge-soil Mixtures: III. Unaltered Anionic Surfactants in Fulvic Acid

Author:
Kenneth M. Holtzclaw; Garrison Sposito
Source:
Soil Science Society of America journal 1978 v.42 no.4 pp. 607-611
ISSN:
0361-5995
Subject:
agricultural soils; anaerobic digestion; anion exchange resins; anionic surfactants; benzene; colorimetry; fulvic acids; hydrochloric acid; hydrolysis; instrumentation; quantitative analysis; sewage; sewage sludge
Abstract:
... A rapid analytical procedure was developed for the quantitative determination of unbiodegraded anionic surfactants in the fulvic acid fraction of sewage sludge. This procedure, which is a modification of the methyl green method of Moore and K olbeson, consists of: (i) hydrolysis in 4N HCl, (ii) separation on an anion exchange resin, (iii) extraction of a methyl green-surfactant complex into benzen ...
DOI:
10.2136/sssaj1978.03615995004200040014x

74. Anatomical Study of Seed Shattering in Bahiagrass and Dallisgrass

Author:
Byron L. Burson; Jario Correa; Howard C. Potts
Source:
Crop science 1978 v.18 no.1 pp. 122-125
ISSN:
0011-183X
Subject:
Paspalum notatum; abscission; biotypes; booting stage; flowering; morphogenesis; pedicel; pith; spikelets
Abstract:
... Seed shattering is a major problem in ‘Pensacola’ bahiagrass (Paspalum notatum Flugge) and dallisgrass (P. dilatatum Poir.) which often reduces availability and quality of seed of these species. An anatomical investigation of the abscission layer formation in the pedicel of Pensacola bahiagrass, common dallisgrass, and yellow-anthered dallisgrass was conducted to determine the sequential histogene ...
DOI:
10.2135/cropsci1978.0011183X001800010032x

75. Anatomy of the latex system in the dormant embryo of Euphorbia marginata Purch: correlative analysis of the histological organization and topographic distribution of laticifers

Author:
Bruni, A.; Vannini, G.L.; Fasulo, M.P.
Source:
Annals of botany 1978 v.42 no.5 pp. 1099-1108
ISSN:
0305-7364
Subject:
Euphorbia marginata; branches; cotyledons; fluorescence microscopy; histology; hypocotyls; latex; meristems; topography
Abstract:
... The anatomy, morphology and topography of laticifers in the mature embryo of Euphorbia marginata have been studied by conventional and fluorescence microscopy. The mature embryo consists of a well-developed embryonic axis and two cotyledons and it contains differentiating vascular tissue. In the hypocotyl, six procambial strands are present which branch and extend into the cotyledons, whereas in t ...
DOI:
10.1093/oxfordjournals.aob.a085550

76. Animal Preference, Nutritive Attributes, and Yield of Pennisetum flaccidum and P. orientale

Author:
J. C. Burns; D. H. Timothy; R. D. Mochrie; D. S. Chamblee; L. A. Nelson
Source:
Agronomy journal 1978 v.70 no.3 pp. 451-456
ISSN:
0002-1962
Subject:
crop quality; forage crops; grazing; nutritive value; livestock; Pennisetum; crop yield
Abstract:
... Warm-season perennial grasses can make an important contribution to animal enterprises by providing forage for summer grazing. In the transitional belt, however, where cool and warm-season grasses are used during the grazing season; both are hampered by periods of belownormal growth and frequently only the warm-season species are available during midsummer. Six Pennisetum accessions initiated grow ...
DOI:
10.2134/agronj1978.00021962007000030022x

77. Anomalies in the extrahepatic biliary tract of the rabbit

Author:
S. P. Lee
Source:
Laboratory animals 1978 v.12 no.2 pp. 71-72
ISSN:
1758-1117
Subject:
bile; bile ducts; cholelithiasis; gall bladder; jaundice; laboratory animals; necropsy; rabbits; surgical transplantation
Abstract:
... A systematic autopsy study found that 29 of 112 animals had anomalies of the bile ducts. Another rabbit had a septate gallbladder. Awareness of these variants is important during hepatic bile collection, studies involving surgical transplantation or manipulation of the extrahepatic ducts, interpretation of results in experimental cholelithiasis and extrahepatic obstructive jaundice. ...
DOI:
10.1258/002367778780953134

78. Antimicrobial effects of mineral acids, organic acids, salts and sterilizing agents in relation to their potential as silage additives

Author:
WOOLFORD, M.K.
Source:
Grass and forage science 1978 v.33 no.2 pp. 131-136
ISSN:
0142-5242
Subject:
acrylic acid; antimicrobial properties; chlorine dioxide; lactic fermentation; silage additives; silage fermentation; sodium chloride; sodium metabisulfite; sterilizing; sulfuric acid
Abstract:
... Mineral acids, organic acids, salts and sterilizing agents were tested against a range of microorganisms at pH 4, 5 and 6. The antimicrobial spectra obtained revealed that hydrochloric, orthophosphoric, sulphuric and glycollic acids have no specific antimicrobial properties and merely function as acidifying agents. Acrylic acid, sulphamic acid and sodium formaldehyde bisulphite would apparently en ...
DOI:
10.1111/j.1365-2494.1978.tb00809.x

79. Ant‐Gardens: The Interaction of Codonanthe Crassifolia (Gesneriaceae) and Crematogaster Longispina (Formicidae)

Author:
Sally E. Kleinfeldt
Source:
Ecology 1978 v.59 no.3 pp. 449-456
ISSN:
0012-9658
Subject:
plant growth; vines; nectar; ant nests; epiphytes; rain forests; fruit pulp; Codonanthe; nutrients; aril; Crematogaster
Abstract:
... A mutualistic association of the type named ₐnt—garden by Ule (1901) between Crematogaster longispina, an arboreal, carton—building ant, and Codonanthe crassifolia, an epiphytic vine, is found in northeastern Costa Rican lowland rain forest. Both species gain an increase in food resources by participating in the association. The plant produces floral and extrafloral nectar and fruit with pulp and ...
DOI:
10.2307/1936574

80. Apparatus for studying fouling of heated surfaces by biological fluids

Author:
A. C. LING; D. B. LUND
Source:
Journal of food science 1978 v.43 no.2 pp. 390-403
ISSN:
0022-1147
Subject:
biological properties and phenomena; egg albumen; fouling; heat transfer; stainless steel; surface temperature
Abstract:
... A laboratory‐scale double tube heat exchanger was developed to study fouling phenomena of biological fluids. The test fluid is continuously circulated through the system exposing the solution to an electrically‐heated stainless steel section. The stainless steel section is 0.635 cm (0.25 in.) diameter and is located on the center‐axis of 2.54 cm (1 in.) diameter glass‐pipe. The heat transfer chara ...
DOI:
10.1111/j.1365-2621.1978.tb02311.x

81. Apparatus for the hyperchlorination of rodent drinking water

Author:
J. Bron; J. E. C. Bywater; B. S. Kellett
Source:
Laboratory animals 1978 v.12 no.1 pp. 11-12
ISSN:
1758-1117
Subject:
chlorine; drinking water; laboratory animals; mice
Abstract:
... An apparatus is described which has been in use for some time providing uniform, low concentrations of chlorine in mouse drinking water. ...
DOI:
10.1258/002367778780953341
PubMed:
625096

82. Apparent Growth Inhibitor in Hulls of Peanut

Author:
E. L. Robinson; D. Burdick
Source:
Crop science 1978 v.18 no.4 pp. 688-689
ISSN:
0011-183X
Subject:
Arachis hypogaea; germination; growth inhibitors; heat; mosses and liverworts; peanuts; seedling growth; water solubility
Abstract:
... Because peanut [Arachis hypogea (L.)] hulls have been suggested as a substitute for sphagum moss in starter cubes for seedling growth, we tested extracts from variously treated hulls for their effects on germination and seedling growth. In these preliminary studies, we found a water-soluble, inhibitory substance that was inactivated by heat. The substance appeared to be an inherent part of the hul ...
DOI:
10.2135/cropsci1978.0011183X001800040043x

83. The Applicability of Dual Gamma Scanning to Freezing Soils and the Problem of Stratification

Author:
J. B. Goit; P. H. Groenevelt; B. D. Kay; J. G. P. Loch
Source:
Soil Science Society of America journal 1978 v.42 no.6 pp. 858-863
ISSN:
0361-5995
Subject:
energy; equations; freezing; soil
Abstract:
... The attenuation of a dual energy gamma beam provides a powerful technique for studying the swelling phenomenon associated with soil freezing. However, the development of a stratified system due to the formation of a discrete ice lens in the same plane as the gamma beam requires special attention. Erroneous results are obtained when attenuation equations which are developed for homogeneous mixtures ...
DOI:
10.2136/sssaj1978.03615995004200060003x

84. Application of high‐pressure liquid chromatography to the study of variables affecting theobromine and caffeine concentrations in cocoa beans

Author:
D. J. TIMBIE; L. SECHRIST; P. G. KEENEY
Source:
Journal of food science 1978 v.43 no.2 pp. 560-565
ISSN:
0022-1147
Subject:
boiling; caffeine; fermentation; testa; theobromine; cotyledons; cocoa beans; ripening; liquid chromatography; pulp
Abstract:
... Boiling water extracts were cooled, centrifuged and injected into a high‐pressure liquid chromatograph. Total alkaloid content among varieties ranged from 24‐50 mg/g defatted cocoa with an average of 37 mg for 10 samples. Theobromine's share of the total ranged from 52‐99%, averaging 87%. Among samples, Criollo had the lowest concentration of total alkaloids, but its caffeine content was highest. ...
DOI:
10.1111/j.1365-2621.1978.tb02354.x

85. An Approach to the Delineation of Rural Banking Markets

Author:
Stephen A. Mathis; Duane G. Harris; Michael Boehlje
Source:
American journal of agricultural economics 1978 v.60 no.4 pp. 601-608
ISSN:
0002-9092
Subject:
agricultural economics; banking; issues and policy; markets; prices; service industry; statistical analysis
Abstract:
... A cross‐demand schedule approach is modified to develop a procedure for delineating product and service markets. Firms are classified as either rivals or nonrivals based on a statistical examination of response times to price adjustments. A test of the approach is made for the delineation of banking markets. Preliminary results indicate that the procedure may have potential for assisting policy ma ...
DOI:
10.2307/1240244

86. Approximate Analytical Solution for Solute Flow During Infiltration and Redistribution

Author:
F. De Smedt; P. J. Wierenga
Source:
Soil Science Society of America journal 1978 v.42 no.3 pp. 407-412
ISSN:
0361-5995
Subject:
chlorides; hydrodynamic dispersion; mathematical models; soil; solutes
Abstract:
... An approximate analytical solution is developed to describe solute flow in soil during infiltration and redistribution. For the solution it is assumed that hydrodynamic dispersion is linearly related to the pore water velocity. In order to use the solution it is necessary to estimate the solute penetration depth. Methods of estimating the solute penetration depth are discussed. Solute concentratio ...
DOI:
10.2136/sssaj1978.03615995004200030006x

87. Apterous and brachypterous coccinellids at the end of the food chain, cionura erecta (asclepiadaceae) - aphis nerii

Author:
PASTEELS, J.M.
Source:
Entomologia experimentalis et applicata 1978 v.24 no.3 pp. 579-584
ISSN:
0013-8703
Subject:
Aphis nerii; Apocynaceae; Hippodamia variegata; adults; food chain; host plants; insects; larvae; progeny
Abstract:
... Aphis nerii on its host plant Cionura erecta (Asclepiadaceae) can serve as prey for coccinellids (Adonia variegata). When A. nerii is the sole food of larval coccinellids, all larvae give rise to brachypterous or apterous adults. If such deformed insects are then fed on aphids from a different species of host plant, the progeny are normal. ...
DOI:
10.1111/j.1570-7458.1978.tb02819.x

88. Aqueous- and Sediment-phase Phosphorus Yields from Five Southern Pine Watersheds

Author:
P. D. Duffy; J. D. Schreiber; D. C. Mc Clurkin; L. L. Mc Dowell
Source:
Journal of environmental quality 1978 v.7 no.1 pp. 45-50
ISSN:
0047-2425
Subject:
phosphorus; samplers; sediments; soil; storms; suspended sediment; total phosphorus; watersheds; Mississippi
Abstract:
... Stormflow from five reforested watersheds (1.5 to 2.8 ha) in northern Mississippi was analyzed during the 1974 water year (Oct. 1973 to Sept. 1974) for phosphorus (P) in solution and in association with suspended sediments. Samples were collected for each storm with Coshocton wheel samplers set below 0.91-m H-flumes. For the year, mean concentration of total P in solution was 0.027 mg/liter for th ...
DOI:
10.2134/jeq1978.00472425000700010009x

89. Arsenic Concentrations in Surface Runoff from Small Watersheds in Texas

Author:
C. W. Richardson; J. D. Price; Earl Burnett
Source:
Journal of environmental quality 1978 v.7 no.2 pp. 189-192
ISSN:
0047-2425
Subject:
Avena sativa; Gossypium hirsutum; Sorghum bicolor; application rate; arsenic; cotton; runoff; sediment yield; sediments; soil; tillage; watersheds; Texas
Abstract:
... This study was conducted to determine the movement of arsenic by surface runoff after application of arsenic acid for desiccation of cotton (Gossypium hirsutum [L.]). Arsenic acid was applied at 6.6 kg/ha during the cotton year of a cotton-grain sorghum (Sorghum bicolor [L.])-oats (Avena sativa [L.]) rotation. The concentration of arsenic dissolved in the runoff water was highest during the first ...
DOI:
10.2134/jeq1978.00472425000700020007x

90. Arsenic Pollution from Underdrainage and Runoff from Golf Greens

Author:
R. L. Duble; J. C. Thomas; K. W. Brown
Source:
Agronomy journal 1978 v.70 no.1 pp. 71-74
ISSN:
0002-1962
Subject:
Cynodon dactylon; Poa annua; arsenates; arsenic; drainage; drainage systems; golf courses; gravel; irrigation water; lawns and turf; leachates; losses from soil; lysimeters; peat; pesticide application; rain; runoff; sand; sandy loam soils; sandy soils; soil sampling; sprinkler irrigation; water pollution
Abstract:
... Modern golf greens are subject to intense management which includes frequent pesticide applications. Tricalcium arsenate, Ca₃(AsO₄)₂, is commonly used on a regular basis for control of grubs and Poa annua even though the As losses associated with leachate and runoff have not been established. This study was thus undertaken to develop data on As losses from golf greens. A field study was conducted ...
DOI:
10.2134/agronj1978.00021962007000010016x

91. Ascorbic acid as an antioxidant in fish flesh and its degradation

Author:
J. C. DENG; M. WATSON; R. P. BATES; E. SCHROEDER
Source:
Journal of food science 1978 v.43 no.2 pp. 457-460
ISSN:
0022-1147
Subject:
antioxidant activity; ascorbic acid; color; fillets; mullet; storage time
Abstract:
... Various concentrations of ascorbic acid were mixed with light color, dark color and mixed (ground fillet) mullet flesh and stored at 2°C. Ascorbic acid degradation in dark or mixed flesh followed fist order kinetics. Zero order kinetics for ascorbic acid degradation was demonstrated in light color flesh. In light color flesh, ascorbic acid acted as an antioxidant with initial concentrations of 50 ...
DOI:
10.1111/j.1365-2621.1978.tb02329.x

92. Ascorbic acid, ascorbates and analogs in spodoptera littoralis diet: stability and effect on larvae

Author:
NAVON, A.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 35-40
ISSN:
0013-8703
Subject:
Spodoptera littoralis; ascorbic acid; chromatography; diet; insect development; larvae; pupae
Abstract:
... The dietary effect of L-ascorbic acid, its ascorbates and analogs at equimolar concentrations on larvae and pupae of the Egyptian Cotton Leafworm, Spodoptera littoralis (Boisd.) was studied. The daily activity loss of these compounds in the diet was determined with a 2,4 dinitrophenylhydrazine-thin layer chromatography method. This determination of ascorbates and analogs showed a rapid loss of act ...
DOI:
10.1111/j.1570-7458.1978.tb02754.x

93. Ascorbic acid, dehydroascorbic acid and diketogulonic acid in frozen green peppers

Author:
R. F. MATTHEWS; J. W. HALL
Source:
Journal of food science 1978 v.43 no.2 pp. 532-534
ISSN:
0022-1147
Subject:
ascorbic acid; blanching; dehydroascorbic acid; flavor; freezing; frozen storage; sweet peppers; texture
Abstract:
... “Total” ascorbic acid (TAA), L‐ascorbic acid (L‐AA), dehydro‐ascorbic acid (DHAA), and diketogulonic acid (DKGA) were determined in fresh green peppers, frozen blanched peppers, and frozen unblanched peppers. L‐AA accounted for 97% of the TAA in fresh peppers. Freezing resulted in a 9.2% decrease of TAA, a 15% decrease in L‐AA, a 5% increase in DHAA and 1% increase in DKGA. Blanching did not affec ...
DOI:
10.1111/j.1365-2621.1978.tb02347.x

94. Assay of old-world screw-worm fly, chrysomya bezziana, labelled with ³²p

Author:
LAMB, K.P.; SANDS, D.P.A.; SPRADBERY, J.P.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 55-65
ISSN:
0013-8703
Subject:
Chrysomya bezziana; adults; egg masses; fecundity; females; isotope labeling; larvae; longevity; sentinel animals
Abstract:
... Techniques for ³²P labelling of larvae and adults of the screw-worm fly, Chrysomya bezziana, are described. Egg masses of labelled flies were readily identified. At the doses used for field releases, oviposition activity, fecundity, fertility and longevity of female flies were not adversely affected. Radioactive egg masses were recovered from sentinel animals following field release of labelled fl ...
DOI:
10.1111/j.1570-7458.1978.tb02731.x

95. Assembly for Mounting Hydraulic Soil Core Sampler on Tractor Front

Author:
L. H. Ginn; Larry G. Heatherly; W. J. Russell
Source:
Agronomy journal 1978 v.70 no.3 pp. 512-514
ISSN:
0002-1962
Subject:
core sampling; soil; tractors
Abstract:
... A front-mounted tractor assembly for support of a hydraulic soil core sampler was constructed. The design satisfies requirements for rapid soil or root core sampling. AM essential part of the assembly is a tool bar which allows lateral movement of the mounted core sampler. The assembly with mounted sampler is capable of extracting 1.9 to 10.2-cm diameter cores to depths as great as 125 cm througho ...
DOI:
10.2134/agronj1978.00021962007000030039x

96. Assessible conformations of amylose: a computer modeling study

Author:
French, A.D.; Murphy, V.G.; Kainuma, Keiji
Source:
Denpun kagaku = Journal of the Japanese Society of Starch Science 1978 v.25 no.3 pp. 171-176
Subject:
dietary carbohydrate; amylose; molecular conformation; crosslinking; glucosides; hydrogen bonding; stereochemistry; crystal structure
Handle:
10113/44446

97. AN Assessment of the performance of dermestes maculatus degeer (coleoptera, dermestidae) in some dietary media

Author:
OSUJI, FABIAN N.C.
Source:
Entomologia experimentalis et applicata 1978 v. no. pp. 185-192
ISSN:
0013-8703
Subject:
Dermestes maculatus; adults; blood meal; body size; bone meal; diet; dried fish; fecundity; feeds; females; fish; fish meal; larvae; lipids; longevity; nutrient content; palm kernel meal; sex ratio; water content
Abstract:
... A comparative assessment has been made of the biological performance of Dermestes maculatus Degeer in various dietary media, namely dried fish, fish meal, bone meal, palm kernel meal, blood meal and wholemeal. The main parameters used were body size and weight of fully grown larvae, number of adult emergents, sex ratio, fecundity of females and longevity of adults in each medium. On all these crit ...
DOI:
10.1111/j.1570-7458.1978.tb02769.x

98. Assimilation of 14CO2 by the inflorescence of Poa annua L. and Lolium perenne L

Author:
Ong, C.K.; Colvill, K.E.; Marshall, C.
Source:
Annals of botany 1978 v.42 no.4 pp. 855-862
ISSN:
0305-7364
Subject:
Lolium perenne; Poa annua; assimilation (physiology); carbon; grains; grasses; inflorescences; leaves; photosynthesis; seed development; seeds; tillers
Abstract:
... The relative assimilatory activity of the inflorescence, its individual components, and the leaves of flowering tillers of Poa annua L. and Lolium perenneL. was determined over the period from inflorescence emergence to seed shedding. The pattern of 14CO2 fixation was similar for both species and the inflorescence was by far the most important assimilatory organ of the reproductive tiller, particu ...
DOI:
10.1093/oxfordjournals.aob.a085525

99. Assortative mating between culex fatigans and c. molestus (diptera, culicidae) under simulated field conditions

Author:
S. J. Miles
Source:
Australian journal of entomology 1978 v.16 no.4 pp. 389-392
ISSN:
1326-6756
Subject:
Culex quinquefasciatus; alcohol dehydrogenase; alleles; assortative mating; cages; color; eggs; electrophoresis; larvae; loci; mutants
Abstract:
... Assortative mating in a mixed population of Culex fatigans and C. molestus established in an outdoor population cage incorporating a simulated septic tank is examined using different electrophoretic alleles at the larval alcohol dehydrogenase (Adh) locus, and the larval colour mutant “yellow larva” as markers. One egg raft out of 66 sampled over a period of 13 weeks was the result of an inters ...
DOI:
10.1111/j.1440-6055.1977.tb00125.x

100. Atlantic: a new potato variety with high solids, good processing quality, and resistance to pests

Author:
Webb, R.E.; Wilson, D.R.; Shumaker, J.R.; Graves, B.; Henninger, M.R.; Watts, J.; Frank, J.A.; Murphy, H.J.
Source:
American potato journal 1978 v.55 no.3 pp. 141-145
ISSN:
0003-0589
Subject:
plant breeding; Solanum tuberosum; potatoes; new variety; crop yield; disease resistance; food processing; pest resistance; plant morphology; potato chips; food quality
Abstract:
... Atlantic is a medium late maturing var. which has been shown to have the following characteristics: tolerance to scab and Verticillium wilt; high yields of attractive tubers; resistance to the bacterial disease pink eye; high solids content; excellent chip and French fry quality and acceptable fresh market quality. It is low in total glycoalkaloids. It was evaluated for yield, sp. gr., and chippin ...
Handle:
10113/20123
DOI:
10.1007/BF02852087