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: Subject term California Remove constraint Subject term: California Text availability Citation in PubAg Remove constraint Text availability: Citation in PubAg
Start Over

Search

17,467  Search Results

« Previous | 1 - 50 of 17,467 |
Number of results to display per page

Search Results

1. A new beny-like sugar beet virus emerging in the United States

Author:
Liu, H.Y.; Sears, J.L.; Lewellen, R.T.
Source:
1st Joint IIRB-ASSBT Congress : 27 Feb.-1 Mar, 2003 : San Antonio, Texas, USA = 1er Congrès conjoint IIRB-ASSBT = 1. IIRB-ASSBT Gemeinschaftskongress pp. -
Subject:
plant viruses; plant diseases and disorders; sugar beet; disease vectors; Beet necrotic yellow vein virus; emerging diseases; disease transmission; Beet soil-borne mosaic virus; Polymyxa betae; chlorosis; mixed infection; Beta vulgaris; California
Handle:
10113/12521

2. Accuracy assessment of a vegetation map of northeastern California using permanent plots and fuzzy sets

Author:
Milliken, Jeff; Beardsley, Debby; Gill, Samantha; Warbington, Ralph
Source:
Natural resource management using remote sensing and GIS : proceedings of the Seventh Forest Service Remote Sensing Applications Conference, Nassau Bay, Texas, April 6-10, 1998 / Jerry Dean Greer, editor pp. -
Subject:
botanical composition; vegetation cover; data analysis; remote sensing; accuracy; stand structure; forests; Lassen National Forest; California; Modoc National Forest
Abstract:
... The accuracy of a northeastern California vegetation map was assessed using the data from a grid of permanent Forest Inventory and Analysis (FIA) plots collected by Region 5 and the Pacific Northwest Research Station (PNW). The map was assessed in three parts: the Modoc National Forest, the Lassen National Forest and the lands outside National Forest boundaries. Accuracy was assessed hierarchicall ...
Handle:
10113/39256

3. Beet curly top virus revisited: factors contributing to re-emergence in California

Author:
Wintermantel, W.M.; Mosqueda, N.F.; Cortez, A.A.; Anchieta, A.G.
Source:
1st Joint IIRB-ASSBT Congress : 27 Feb.-1 Mar, 2003 : San Antonio, Texas, USA = 1er Congrès conjoint IIRB-ASSBT = 1. IIRB-ASSBT Gemeinschaftskongress pp. -
Subject:
disease diagnosis; plant diseases and disorders; sugar beet; vegetable crops; polymerase chain reaction; weed hosts; enzyme-linked immunosorbent assay; Beet curly top virus; strains; Beta vulgaris; disease incidence; California
Handle:
10113/12513

4. Beet curly top virus, insecticides and plant resistance

Author:
Kaffka, S.R.; Lewellen, R.T.; Wintermantel, W.M.
Source:
1st Joint IIRB-ASSBT Congress : 27 Feb.-1 Mar, 2003 : San Antonio, Texas, USA = 1er Congrès conjoint IIRB-ASSBT = 1. IIRB-ASSBT Gemeinschaftskongress pp. -
Subject:
Beta vulgaris; sugar beet; Beet curly top virus; plant diseases and disorders; disease transmission; insect vectors; Circulifer tenellus; vector control; imidacloprid; phorate; pesticide application; seed dressings; soil treatment; application rate; disease resistance; cultivars; variety trials; planting date; crop yield; California
Handle:
10113/12512

5. Burned Area Emergency Rehabilitation project: an example of successful technology transfer

Author:
Hardwick, Paul E.; Lachowski, Henry; Griffith, Robert; Parsons, Annette
Source:
Natural resource management using remote sensing and GIS : proceedings of the Seventh Forest Service Remote Sensing Applications Conference, Nassau Bay, Texas, April 6-10, 1998 / Jerry Dean Greer, editor pp. -
Subject:
image analysis; forested watersheds; geographic information systems; technology transfer; geospatial data processing; soil erosion models; remote sensing; forest fires; global positioning systems; water erosion; forests; Mendocino National Forest; California
Handle:
10113/39921

6. Experimental use of the micro-encapsulated pear ester kairomone for control of codling moth, Cydia pomonella (L.), in walnuts

Author:
Light, Douglas
Source:
International Workshop on Arthropod Pest Problems in Pome Fruit Production : proceedings of the meeting at Lleida (Spain) 4-6 September, 2006 / edited by: Jesús Avilla, Jerry Cross and Claudio Ioriatti pp. -
Subject:
phosmet; insect pests; kairomones; Juglans regia; insect attractants; pesticide application; chlorpyrifos; crop damage; microencapsulation; esters; walnuts; insect control; methoxyfenozide; Amyelois transitella; Cydia pomonella; California
Handle:
10113/20065

7. Fuel loading and risk assessment Lassen National Forest

Author:
Hardwick, Paul E.; Lachowski, Henry; Forbes, Judy; Olson, Robert; Roby, Ken; Fites, JoAnn
Source:
Natural resource management using remote sensing and GIS : proceedings of the Seventh Forest Service Remote Sensing Applications Conference, Nassau Bay, Texas, April 6-10, 1998 / Jerry Dean Greer, editor pp. -
Subject:
fuels (fire ecology); forest fires; risk assessment; remote sensing; geographic information systems; forest habitats; wildlife habitats; forested watersheds; Lassen National Forest; California
Handle:
10113/39965

8. Impact of fire on soil resource patterns in a northern California montane ecosystem

Author:
Miesel, Jessica R.; Skinner, Carl N.; Boerner, Ralph E.J.
Source:
Proceedings, 23rd, Tall Timbers Fire Ecology Conference : fire in grassland & shrubland ecosystems / edited by Ronald E. Masters and Krista E.M. Galley pp. -
Subject:
soil organic carbon; forest soils; coniferous forests; burnt soils; soil microorganisms; forest thinning; prescribed burning; forest fires; mineralization; catechol oxidase; nitrification; biological activity in soil; enzyme activity; acid phosphatase; nitrogen; soil enzymes; carbon nitrogen ratio; chitinase; California; Klamath National Forest
Handle:
10113/45705

9. Management of fire regime, fuels, and fire effects in southern California chaparral: lessons from the past and thoughts for the future

Author:
Conard, Susan G.; Weise, David R.
Source:
Fire in ecosystem management : shifting the paradigm from suppression to prescription : proceedings of the 20th Tall Timbers Fire Ecology Conference, 7-10, May 1996, Boise Convention Centre "On the Grove", Boise, Idaho, USA / presented by Tall Timbers Research Station ... [et al.] ; [edited by Teresa L. Pruden and Leonard A. Brennan] pp. -
Subject:
chaparral; wildland fire management; fire regime; fuels (fire ecology); wildfires; history; geographical distribution; wildland-urban interface; stand characteristics; age; California
Abstract:
... Chaparral is an intermediate fire-return interval (FRI) system, which typically burns with high-intensity crown fires. Although it covers only perhaps 10% of the state of California, and smaller areas in neighboring states, its importance in terms of fire management is disproportionately large, primarily because it occurs in the wildland-urban interface through much of its range. Historic fire reg ...
Handle:
10113/34404

10. Olive fruit fly biology and cultural control practices in California

Author:
Yokoyama, Victoria Y.; Miller, Gina T.
Source:
Proceedings of the meeting at Florence (Italy), 26-28 October 2005 = Comptes rendus de la réunion à Florence (Italy), 26-28 October 2005 / edited by Argyro Kalaitzaki pp. -
Subject:
insect pests; pupae; oviposition; insect attractants; relative humidity; irrigation; Olea europaea; air temperature; irrigated farming; olives; Bactrocera oleae; larvae; insect development; imagos; mortality; California
Handle:
10113/20063

11. Sources of biased errors in evaluating evapotranspiration equations

Author:
Ritchie, J.T.; Howell, T.A.; Meyer, W.S.; Wright, J.L.
Source:
Evapotranspiration and irrigation scheduling : proceedings of the international conference, November 3-6, 1996, San Antonio Convention Center, San Antonio, Texas / editors, C.R. Camp, E.J. Sadler, and R.E. Yoder ; co-sponsors, the Irrigation Association, International Committee on Irrigation Drainage pp. -
Subject:
evapotranspiration; estimation; equations; geographical variation; lysimeters; Medicago sativa; alfalfa; Triticum aestivum; wheat; solar radiation; wind; Ohio; California
Handle:
10113/1660

12. Statewide change detection using multitemporal remote sensing data

Author:
Levien, Lisa M.; Fischer, Chris S.; Roffers, Peter D.; Maurizi, Barbara A.
Source:
Natural resource management using remote sensing and GIS : proceedings of the Seventh Forest Service Remote Sensing Applications Conference, Nassau Bay, Texas, April 6-10, 1998 / Jerry Dean Greer, editor pp. -
Subject:
temporal variation; image analysis; rangelands; thematic maps; coniferous forests; vegetation cover; remote sensing; Landsat; woodlands; California
Handle:
10113/39255

13. Terrain variables used for predictive mapping of vegetation communities in southern California

Author:
Franklin, Janet; McCullough, Paul; Gray, Curtis
Source:
Terrain analysis : principles and applications / edited by John P. Wilson, John C. Gallant pp. -
Subject:
topography; cartography; geospatial technology; plant communities; riparian forests; chaparral; California
Handle:
10113/38702

14. Moisture as a factor of error in determining forage yields

Author:
McKee, R.
Source:
Agronomy journal 1914 v.6 no.3 pp. 113-117
ISSN:
0002-1962
Subject:
Medicago sativa; forage; water content; yield components; Tennessee; California
DOI:
10.2134/agronj1914.00021962000600030003x

15. Mutual influence of certain crops in relation to nitrogen

Author:
Kellerman, K.F.; Wright, R.C.
Source:
Agronomy journal 1914 v.6 no.4/5 pp. 204-210
ISSN:
0002-1962
Subject:
Phaseolus vulgaris; Pisum sativum; Hordeum vulgare; nitrification; physicochemical properties; California; District of Columbia
DOI:
10.2134/agronj1914.00021962000604-50007x

16. The effect of clipping on the root development of alfalfa

Author:
McKee, R.
Source:
Agronomy journal 1916 v.8 no.5 pp. 329-332
ISSN:
0002-1962
Subject:
Medicago sativa; roots; plant development; pruning; California
DOI:
10.2134/agronj1916.00021962000800050005x

17. The action of precipated magnesium carbonate on soils

Author:
Kelley, W.P.
Source:
Agronomy journal 1917 v.9 no.6 pp. 285-297
ISSN:
0002-1962
Subject:
sandy loam soils; fertilizer application; nitrification; magnesium carbonate; ammonium sulfate; magnesium sulfate; California
DOI:
10.2134/agronj1917.00021962000900060005x

18. Studies on the effect of nitrogen applied to oats at different periods of growth

Author:
Gericke, W.F.
Source:
Agronomy journal 1922 v.14 no.8 pp. 312-320
ISSN:
0002-1962
Subject:
harvest date; planting date; application timing; fertilizer application; dry matter accumulation; Avena sativa; yield components; protein content; nitrogen fertilizers; California
DOI:
10.2134/agronj1922.00021962001400080006x

19. Miniature thrasher and separator

Author:
Mackie, W.W.; Hoffman, A.H.
Source:
Agronomy journal 1924 v.16 no.1 pp. 57-60
ISSN:
0002-1962
Subject:
separators; grain crops; crop damage; design; research equipment; California
DOI:
10.2134/agronj1924.00021962001600010010x

20. Biannual cropping of wheat hybrids

Author:
Florell, V.H.
Source:
Agronomy journal 1925 v.17 no.6 pp. 354-356
ISSN:
0002-1962
Subject:
Triticum aestivum; hybrids; cropping systems; variety trials; breeding methods; California
DOI:
10.2134/agronj1925.00021962001700060008x

21. Branching of rice plants

Author:
Jones, J.W.
Source:
Agronomy journal 1925 v.17 no.10 pp. 619-623
ISSN:
0002-1962
Subject:
Oryza sativa; plant development; stems; branching; California
Abstract:
... The term branching refers to the production of shoots at the nodes on the main and secondary culms of rice. It is of no economic importance in the California rice fields. At the Biggs Rice Field Station, under certain conditions, branching is quite common in early maturing varieties. In California branching is most intimately connected with early maturity and ample space for the plant development. ...
DOI:
10.2134/agronj1925.00021962001700100006x

22. Germination of rice seed as affected by temperature, fungicides, and age

Author:
Jones, J.W.
Source:
Agronomy journal 1926 v.18 no.7 pp. 576-592
ISSN:
0002-1962
Subject:
water content; Oryza sativa; varieties; seed germination; temperature; fungicides; California
Abstract:
... The results of these experiments indicate: Seeds of some rice varieties are more resistant to deterioration during long exposure under water at low temperatures than those of other varieties. Colusa, Wataribune, and Early Prolific appear to be the most resistant of the varieties used in these experiments. An exposure of eight hours under water at 100 degrees to 118 degrees F. in each 24-hour day g ...
DOI:
10.2134/agronj1926.00021962001800070003x

23. A comparison of selections of coast barley

Author:
Florell, V.H.
Source:
Agronomy journal 1927 v.19 no.7 pp. 660-674
ISSN:
0002-1962
Subject:
variety trials; Hordeum vulgare; early development; crop yield; coasts; California
Abstract:
... Coast barley was the earliest type of this cereal grown in California and was first introduced during the period of Spanish settlement. Its cultivation spread over the entire state and over the far western mountain region where it has been the principal variety for decades. Before the World War almost all of the annual barley crop in California consisted of Coast barley. It now shares honors with ...
DOI:
10.2134/agronj1927.00021962001900070009x

24. Inheritance of awnedness in rice

Author:
Jones, J.W.
Source:
Agronomy journal 1927 v.19 no.9 pp. 830-839
ISSN:
0002-1962
Subject:
crossing; Oryza sativa; variety trials; inheritance (genetics); California
Abstract:
... 1. The crosses Butte X Colusa and Colusa X Italian Red were used in the study of the inheritance of awnedness reported in this paper. Butte is a fully awned variety, while Italian Red is partly awned, and Colusa is a variety awnless under all conditions. 2. Awnedness is partially dominant to awnlessness in F1 and the F2 of the Butte X Colusa cross segregated in the phenotypic ratio of nine awned t ...
DOI:
10.2134/agronj1927.00021962001900090007x

25. Goat grass or wild wheat (Aegilops triuncialis)

Author:
Kennedy, P.B.
Source:
Agronomy journal 1928 v.20 no.12 pp. 1292-1296
ISSN:
0002-1962
Subject:
Aegilops triuncialis; weeds; mechanical damage; California
DOI:
10.2134/agronj1928.00021962002000120003x

26. Bulked-population method of handling cereal hybrids

Author:
Florell, V.H.
Source:
Agronomy journal 1929 v.21 no.7 pp. 718-724
ISSN:
0002-1962
Subject:
Triticum aestivum; plant breeding; hybrids; hybridization; California
Abstract:
... The bulked-population method of handling cereal hybrids consists essentially of creating populations by hybridization, growing the hybrids in bulk for six or eight generations until they have become homozygous or nearly so, and then making head or plant selections for comparative testing in the usual way. Nineteen crosses were handled by this method in an experiment at University Farm, Davis, Cali ...
DOI:
10.2134/agronj1929.00021962002100070002x

27. Effect of date of seeding on yield, lodging, maturity, and nitrogen content in cereal varietal experiments

Author:
Florell, V.H.
Source:
Agronomy journal 1929 v.21 no.7 pp. 725-731
ISSN:
0002-1962
Subject:
Triticum aestivum; Hordeum vulgare; Avena sativa; variety trials; cultivars; crop yield; seasonal variation; sowing date; California
DOI:
10.2134/agronj1929.00021962002100070003x

28. Technic of rice hybridization in California

Author:
Jones, J.W.
Source:
Agronomy journal 1929 v.21 no.1 pp. 35-40
ISSN:
0002-1962
Subject:
plant breeding; Oryza sativa; hybridization; California
DOI:
10.2134/agronj1929.00021962002100010004x

29. Breeding wheats resistant to bunt by the backcross method

Author:
Briggs, F.N.
Source:
Agronomy journal 1930 v.22 no.3 pp. 239-244
ISSN:
0002-1962
Subject:
Triticum; plant breeding; Tilletia tritici; backcrossing; California
Abstract:
... The value of back-crossing for incorporating and fixing characters undoubtedly has been apparent to all students of genetics. Breeders of animals long have used this method to fix desirable characters. Harlan and Pope apparently are the only ones, however, who have reported the use of back-crossing in plant breeding for the purpose of introducing and fixing a desirable character from one variety i ...
DOI:
10.2134/agronj1930.00021962002200030004x

30. Phosphate penetration in field soils

Author:
Stephenson, R.E.; Chapman, H.D.
Source:
Agronomy journal 1931 v.23 no.10 pp. 759-770
ISSN:
0002-1962
Subject:
fertilizer analysis; phosphorus fertilizers; soil fertility; Citrus; California
Abstract:
... Water and acid extracts of soils which had received from 1 to 30 or more annual applications of a phosphate-carrying fertilizer compared with similar soils which had not received phosphate showed appreciable penetration of the phosphate below the surface foot in light- to medium-textured soils. Little or no penetration was found to have taken place in very heavy soils. There are indications that a ...
DOI:
10.2134/agronj1931.00021962002300100001x

31. The occurrence of normal (unproliferated) florets in Poa bulbosa in the United States

Author:
Halperin, M.
Source:
Agronomy journal 1931 v.23 no.7 pp. 511-515
ISSN:
0002-1962
Subject:
taxonomy; Poa bulbosa; anatomy and morphology; California
Abstract:
... Plants of Poa bulbosa L., i.e. normal Poa bulbosa, have been found in several localities in California. Illustrations are presented of the new material. Heretofore unreported findings of similar material by others in the United States are mentioned here. Other pertinent information regarding the normal form in the United States is also reported in this study. The present report is thus a complete ...
DOI:
10.2134/agronj1931.00021962002300070002x

32. Nitrogenous fertilizers on small grains following sorghums

Author:
Conrad, J.P.
Source:
Agronomy journal 1932 v.24 no.4 pp. 316-322
ISSN:
0002-1962
Subject:
Sorghum bicolor; grain crops; crop yield; nitrogen fertilizers; ammonium sulfate; phytotoxicity; California
Abstract:
... The experimental results given in this and in previous papers clearly show that for the conditions obtaining in these experiments, small grains following sorghums are benefited by applications of nitrogenous fertilizers. The benefits as measured by increases in yield are roughly proportional to the amount of fertilizer applied. It would be most natural to suppose that the poor growth of the unfert ...
DOI:
10.2134/agronj1932.00021962002400040008x

33. Organic matter as a factor in classification of the soils of dry regions

Author:
Shaw, C.F.
Source:
Agronomy journal 1932 v.24 no.7 pp. 565-577
ISSN:
0002-1962
Subject:
soil classification; arid zones; textural soil types; soil parent materials; nitrogen content; soil water content; air temperature; soil depth; rain; soil pH; altitude; humus; soil color; vegetation; California
Abstract:
... We must conclude from these studies that the organic matter content is not dominant in determining the color of the soils in regions of periodic precipitation with hot dry summers and cool moist winters, and that it occupies a very minor place in determining the characteristics of soil profiles. Of much more importance in profile development, and consequently to soil classification, are the minera ...
DOI:
10.2134/agronj1932.00021962002400070010x

34. Effect of reduced oxygen pressure on rice germination

Author:
Jones, J.W.
Source:
Agronomy journal 1933 v.25 no.1 pp. 69-81
ISSN:
0002-1962
Subject:
Oryza sativa; seed germination; oxygen; pressure; Echinochloa crus-galli; submergence; seedling growth; soil water content; field experimentation; cultural control; weed control; dissolved oxygen; Virginia; California
Abstract:
... In the 3 years during which this work was conducted in the field rice sown on the surface of the soil, 1/2 inch, and 1 inch deep, then continuously submerged, produced an average of 78.14, 20.00, and 2.66% of seedlings, respectively. No seedlings were obtained from seed sown 1/2, 2, or 2 1/2 inches deep and continuously submerged either in the field or in pots in the greenhouse, except when oxygen ...
DOI:
10.2134/agronj1933.00021962002500010007x

35. Evidence of field hybridization in beans

Author:
Mackie, W.W.; Smith, F.L.
Source:
Agronomy journal 1935 v.27 no.11 pp. 903-909
ISSN:
0002-1962
Subject:
Phaseolus vulgaris; Phaseolus acutifolius; Vigna unguiculata; Phaseolus coccineus; Phaseolus lunatus; hybridization; cross pollination; insect pollination; California
Abstract:
... From the evidence presented, field hybridization in all six species of beans grown in California is of common occurrence. This cross-pollination usually occurs between plants adjacent to one another. Field hybridization between vines within a variety has been shown to cause variation in size and color of seed and vigor and maturity of the vines, as in the case of the Salinas Pinks. Where disease r ...
DOI:
10.2134/agronj1935.00021962002700110006x

36. Inheritance of earliness and length of kernel in rice

Author:
Jones, J.W.; Adair, C.R.; Beachell, H.M.; Davis, L.L.
Source:
Agronomy journal 1935 v.27 no.11 pp. 910-921
ISSN:
0002-1962
Subject:
seeds; Oryza sativa; early development; crossing; humidity; length; temperature; inheritance (genetics); Texas; Arkansas; California
Abstract:
... The segregation in F2 for date of first heading in the crosses Bozu X Edith and Bozu X Blue Rose appeared to be controlled by multiple genetic factors; in the cross Colusa X Edith mainly by complete genetic factors indicating a 9 late to 7 early ratio; and in the cross Colusa X Blue Rose largely by one main genetic factor giving about 3 late to 1 early plant. In the F2 populations of the crosses B ...
DOI:
10.2134/agronj1935.00021962002700110007x

37. The effect of corn smut on the yield of grain in the San Joaquin Valley of California

Author:
Smith, F.L.
Source:
Agronomy journal 1936 v.28 no.4 pp. 257-265
ISSN:
0002-1962
Subject:
Zea mays; crop yield; crop losses; Ustilago zeae; galls; leaves; fungal diseases of plants; ears; California
Abstract:
... Grain from 220 pairs of smutted and adjacent nonsmutted plants was weighed. Analyses of differences were made by Student's method. Losses from smut infection on the ear and below the ear were calculated for small, medium, and large galls. Losses due to multiple galls of a number of different combinations were calculated. Losses due to smut below the ear are estimated to be 7% for small, 19% for me ...
DOI:
10.2134/agronj1936.00021962002800040001x

38. Effect of age, condition, and temperature on the germination of flaxseed

Author:
Dillman, A.C.; Toole, E.H.
Source:
Agronomy journal 1937 v.29 no.1 pp. 23-29
ISSN:
0002-1962
Subject:
linseed; flax; germination; soil temperature; weather; California
DOI:
10.2134/agronj1937.00021962002900010004x

39. The Solonetz-like soils in southern California

Author:
Nikiforoff, C.C.
Source:
Agronomy journal 1937 v.29 no.9 pp. 781-796
ISSN:
0002-1962
Subject:
soil morphological features; soil chemistry; soil analysis; California
Abstract:
... Some soils in southern California are characterized by the profiles which are similar morphologically to those of the Solonetz. It has not been certain, however, whether or not these soils are the true Solonetz. A precise definition of the real nature of the soil requires an examination of its morphology, chemistry, and genesis and their comparison with those of the established soil types. This st ...
DOI:
10.2134/agronj1937.00021962002900090009x

40. Effect of Claypan on the Growth and Production of Apples in California

Author:
R. Earl Storie
Source:
Soil Science Society of America journal 1939 v.3 no.C pp. 317-322
ISSN:
0361-5995
Subject:
Malus domestica; apples; clay; coastal plain soils; crop production; fruit growing; fruit trees; texture; California
Abstract:
... Summary 1.Soils of uniform texture to a considerable depth produce large long-lived apple trees that are deep rooted. Mature trees in Santa Cruz County, California, produce annually between 700 and 2,400 40-pound boxes of apples per acre. The average of 34 records between 1931 and 1937 is 1,088 boxes per acre. 2.Soils that have moderately subsoils or soils of immature to seminature age produce con ...
DOI:
10.2136/sssaj1939.036159950003000C0062x

41. Comparative yields of transplanted and direct sown rice

Author:
Adair, C.R.; Beachell, H.M.; Jodon, N.E.; Davis, L.L.; Jones, J.W.
Source:
Agronomy journal 1942 v.34 no.2 pp. 129-137
ISSN:
0002-1962
Subject:
Oryza sativa; crop yield; sowing; varieties; variety trials; planting; California; Arkansas; Louisiana; Texas
Abstract:
... The varieties Caloro, Early Prolific, and Arkansas Fortuna rice were grown at the Arkansas, Louisiana, and Texas rice experiment stations, and Caloro and Early Prolific were grown at the Biggs, Calif., Rice Field Station during the 3-year period of 1937 to 1939 to compare the yields from plots direct seeded and transplanted. The average yields of Caloro for the 3-year period from direct seeding we ...
DOI:
10.2134/agronj1942.00021962003400020004x

42. Field studies of smut resistance in oats

Author:
Stanton, T.R.; Murphy, H.C.
Source:
Agronomy journal 1942 v.34 no.3 pp. 248-258
ISSN:
0002-1962
Subject:
variety trials; crossing; fungal diseases of plants; varieties; disease resistance; Avena nuda; Ustilago segetum var. avenae; Avena sativa; Iowa; Nebraska; Wisconsin; California; Kansas; Indiana; North Dakota; Idaho; Texas; Virginia; Minnesota; New York; Georgia; North Carolina
Abstract:
... Uniform tests of oats for smut resistance were conducted for 5 years at 9 to 15 stations each year. Local collections of smut were used at each station. The Canadian and Gothland check varieties showed high infection to nearly all collections of smut, averaging 73.86% and 36.92%, respectively. Comparable smut percentages for the other check varieties, Richland, Monarch, Black Mesdag, Fulghum, and ...
DOI:
10.2134/agronj1942.00021962003400030006x

43. Reaction of wheat varieties with known genes for resistance to races of bunt, Tilletia caries and T. foetida

Author:
Briggs, F.N.; Holton, C.S.
Source:
Agronomy journal 1950 v.42 no.10 pp. 483-486
ISSN:
0002-1962
Subject:
cultivars; plant diseases and disorders; genetic resistance; Tilletia tritici; genes; Triticum aestivum; Tilletia laevis; plant pathogenic fungi; strains; California
Abstract:
... For the most part the five varieties which have been shown to possess only the Martin genes, M, for resistance have behaved uniformly to the different races of bunt. Exceptions were noted for races T-13, T-14, and L-9, where both the Martin and Odessa varieties were resistant but other varieties were susceptible. Briggs, in 1930 (7), pointed out that varieties shown to carry a single gene for resi ...
DOI:
10.2134/agronj1950.00021962004200100004x

44. Some moisture and salinity relationships in peat soils

Author:
Campbell, R.B.; Richards, L.A.
Source:
Agronomy journal 1950 v.42 no.12 pp. 582-585
ISSN:
0002-1962
Subject:
peat soils; soil salinity; electrical conductivity; soil water content; Zea mays; California
Abstract:
... A number of moisture and salinity measurements on 19 samples of peat soil representing five saline profiles from the delta area of the Sacramento-San Joaquin rivers of California are reported. The moisture retaining and transmitting properties of peat soils appear to be similar to those of mineral soils except that the moisture percentage (dry weight basis) at any given soil moisture condition is ...
DOI:
10.2134/agronj1950.00021962004200120002x

45. Dominant Soils of the Redwood — Douglas-fir Region of California

Author:
R. Earl Storie; A. E. Wieslander
Source:
Soil Science Society of America journal 1952 v.16 no.2 pp. 163-167
ISSN:
0361-5995
Subject:
Pseudotsuga menziesii; Sequoia sempervirens; annuals; bedrock; chaparral; conifers; forests; grazing; highlands; perennial grasses; prairie soils; rain; soil properties; surveys; vegetation cover; watersheds; California
Abstract:
... More than three million acres of the upland area of the Redwood-Douglas-fir Region of California have been mapped and classified to obtain information for use in the management of forest, grazing, and watershed land, as well as basic data on the soils of this important area. In this survey the soils have been classified as to soil series and depth classes. The dominant soil series are divided into ...
DOI:
10.2136/sssaj1952.03615995001600020014x

46. Hydraulic Gradients During Infiltration in Soils

Author:
R. D. Miller; Felix Richard
Source:
Soil Science Society of America journal 1952 v.16 no.1 pp. 33-38
ISSN:
0361-5995
Subject:
flour; silica; soil; California
Abstract:
... A technique for direct measurement of hydraulic head in rapidly changing systems was applied to the infiltration of water into artificially packed columns of dry soil including three California soils and a sample of silica flour. Results indicate that the transmitting zone in each soil was a region of relatively uniform hydraulic gradient which was greater than unity but decreased with time and mi ...
DOI:
10.2136/sssaj1952.03615995001600010011x

47. Modulus of Rupture as an Index of Crusting of Soil

Author:
L. A. Richards
Source:
Soil Science Society of America journal 1953 v.17 no.4 pp. 321-323
ISSN:
0361-5995
Subject:
beans; drying; exchangeable sodium; modulus of rupture; sandy loam soils; seedlings; strength (mechanics); California
Abstract:
... Apparatus and procedure are described for measuring the modulus of rupture of soil. Briquets approximately 1 × 3.5 × 7 cm. are formed by placing screened dry soil in brass molds, wetting for one hour by subbing and drying at 50°C. The force required to break a briquet when loaded as a horizontal beam is measured and the modulus of rupture, which is the maximum fiber stress, is calculated by the fo ...
DOI:
10.2136/sssaj1953.03615995001700040005x

48. Vegetational Approach to Soil Surveys in Wild-land Areas

Author:
A. E. Wieslander; R. Earl Storie
Source:
Soil Science Society of America journal 1953 v.17 no.2 pp. 143-147
ISSN:
0361-5995
Subject:
aerial photography; forest stands; indigenous species; mountains; soil; soil surveys; vegetation; wildland; California
Abstract:
... This paper describes methods employed in the concurrent mapping of vegetation and soil on more than 3 million acres of mountainous land in California. The land is classified according to vegetational types, age and density of timber stands, timber site quality, and series and depth of soil. Important features are (1) office delineation on aerial photographs of most boundaries of vegetational and s ...
DOI:
10.2136/sssaj1953.03615995001700020015x

49. Characteristics and Vegetation Relationships of Some Podzolic Soils Near the Coast of Northern California

Author:
Robert A. Gardner; Kenneth E. Bradshaw
Source:
Soil Science Society of America journal 1954 v.18 no.3 pp. 320-325
ISSN:
0361-5995
Subject:
Podzols; Pseudotsuga menziesii; Sequoia sempervirens; coasts; forests; geographical distribution; groundwater; growing season; podzolization; summer; surveys; temperature; winter; California
Abstract:
... A survey of vegetation and soil of wild lands in Mendocino County in northern California was completed in 1951. This survey disclosed the occurrence near the coast of some distinct podzolic soil, unique in relation to most other soils of the state, of unexpected extent, and having in part distinct vegetation associations. This northern coastal area has cool, nearly rainless but foggy summers and m ...
DOI:
10.2136/sssaj1954.03615995001800030023x

50. Surface Accumulations of Nitrates and Other Soluble Salts in California Orange Orchards

Author:
Robert B. Harding
Source:
Soil Science Society of America journal 1954 v.18 no.4 pp. 369-372
ISSN:
0361-5995
Subject:
evaporation; furrow irrigation; furrows; irrigation rates; leachates; leaching; nitrates; nitrogen; nutrients; orchards; salinity; salt concentration; soil texture; soluble salts; trees; California
Abstract:
... Information presented shows that in furrow-irrigated California orange orchards, as much as 3 tons of soluble salts per acre, representing 800 lbs. of nitrogen as well as other necessary plant nutrients, may accumulate in the upper 6 inches of the interfurrow ridges as a result of capillary conduction. These accumulations have little chance of being of benefit to the trees under present cultural p ...
DOI:
10.2136/sssaj1954.03615995001800040005x