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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. New species of Asilidae from southern California

Author:
Cole, Frank R.
Source:
Psyche 1916 v.23 no.3 pp. 63-72
ISSN:
0033-2615
Subject:
Asilidae; new species; insect morphology; insect taxonomy; geographical distribution; California
Handle:
10113/18967
DOI:
10.1155/1916/84303

17. 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

18. 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

19. 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

20. 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

21. 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

22. 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

23. 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

24. 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

25. 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

26. 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

27. Two new clavicorns from the United States

Author:
Blake, Doris H.
Source:
Psyche 1928 v.35 no.2 pp. 108-113
ISSN:
0033-2615
Subject:
insect morphology; geographical distribution; insect taxonomy; Languriidae; new species; Cryptophagidae; Florida; California
Handle:
10113/18821
DOI:
10.1155/1928/41746

28. 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

29. 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

30. 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

31. 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

32. 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

33. 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

34. 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

35. 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

36. 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

37. 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

38. 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

39. 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

40. 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

41. 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

42. 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

43. 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

44. 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

45. 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

46. 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

47. 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

48. 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

49. 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

50. 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

51. 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

52. 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

53. The Origin of Mima Mound (Hogwallow) Microrelief in the Far Western States

Author:
Rodney J. Arkley; Herrick C. Brown
Source:
Soil Science Society of America journal 1954 v.18 no.2 pp. 195-199
ISSN:
0361-5995
Subject:
Formicidae; burrows; gophers; gravel; ground squirrels; hydrostatic pressure; microrelief; sand; soil surveys; soil types; wind; California
Abstract:
... The origin of the mound microrelief known by such names as “hogwallows,” “pimple mounds” or “mima mounds” has long been a mystery; although many solutions have been proposed, none has yet received widespread acceptance. During the course of the soil surveys of eastern Merced and Stanislaus Counties of California, where mound microrelief is widespread, the phenomenon was studied over a period of ei ...
DOI:
10.2136/sssaj1954.03615995001800020021x

54. The Interaction of Salinity and Planting Practice on the Germination of Irrigated Row Crops

Author:
Leon Bernstein; A. J. MacKenzie; B. A. Krantz
Source:
Soil Science Society of America journal 1955 v.19 no.2 pp. 240-243
ISSN:
0361-5995
Subject:
electrical conductivity; germination; irrigation; lettuce; mulching; planting; rowcrops; salinity; wetting front; California
Abstract:
... The influence of bed shape, planting, and irrigation practice on the germination of row crops on a series of artificially salinized plots was determined at Riverside and Brawley, Calif. Three experiments were conducted, testing four bed types with a total of eight crops. The salinity status of the soil in the plow-layer prior to bedding-up may be used to predict the probable success of various pla ...
DOI:
10.2136/sssaj1955.03615995001900020034x

55. Cotton Quality and Fiber Properties : Part VI: Comparison of a Matched Pair of Raingrown and Irrigated Cottons

Author:
Helmut Wakeham
Source:
Textile research journal 1956 v.26 no.12 pp. 925-936
ISSN:
0040-5175
Subject:
bales; energy; fabrics; irrigation; lint cotton; mechanical properties; polymerization; research institutions; textile fibers; yarns; California; Mississippi
Abstract:
... Several years ago "irrigated cottons" were discounted under comparable grades and staples of raingrown cottons because of the widespread belief that the processing characteristics of the irrigated cottons were inferior to the normal raingrown cottons. Since Textile Research Institute was engaged in a broad program of relating cotton fiber properties with processing behavior and product quality, it ...
DOI:
10.1177/004051755602601203

56. Effects of Soil Phosphorus on Growth and Minor Element Nutrition of Citrus

Author:
Frank T. Bingham; James P. Martin
Source:
Soil Science Society of America journal 1956 v.20 no.3 pp. 382-385
ISSN:
0361-5995
Subject:
Citrus aurantium; absorption; copper; copper deficiency; fertilizer application; greenhouse experimentation; indicator species; iron; leaves; lemons; manganese; minor elements; monocalcium phosphate; phosphorus; phosphorus fertilizers; plant growth; seedlings; soil; zinc; California
Abstract:
... The effect of phosphorus fertilization of three different soils on the growth and minor element nutrition of citrus was evaluated in greenhouse studies. These soils were collected from uncultivated areas in San Diego County, Calif., where citrus had benefited from P fertilization. The soils were placed in 3-gallon crocks and treated with monocalcium phosphate in amounts equivalent to 0, 76, 360, a ...
DOI:
10.2136/sssaj1956.03615995002000030023x

57. Sulfur and Nitrogen Composition of Fertilized and Unfertilized Alfalfa Grown on a Sulfur-Deficient Soil

Author:
V. V. Rendig
Source:
Soil Science Society of America journal 1956 v.20 no.2 pp. 237-240
ISSN:
0361-5995
Subject:
alfalfa; crude protein; fertilizer application; gypsum; methionine; nitrate nitrogen; nitrogen; phosphorus fertilizers; protein value; sand; soil; sulfur; sulfur fertilizers; total nitrogen; California; India
Abstract:
... A study was made of the effects of three levels of S fertilization (0, 200, 400 lbs. gypsum per acre) on several forms of S and N present in alfalfa grown on Delhi sand in the San Joaquin Valley of California. Previous studies with alfalfa on this soil have shown that the annual yield could be approximately doubled by an application of 200 lbs. gypsum per acre and that phosphate fertilizer had no ...
DOI:
10.2136/sssaj1956.03615995002000020024x

58. Transect from Lake Tahoe, California, to the Pacific Ocean Showing Relationship Between Soils, Physiographic Position, Geology, Climate, Natural Vegetation, and Land Use

Author:
R. Earl Storie; Lloyd N. Brown
Source:
Soil Science Society of America journal 1956 v.20 no.4 pp. 562-565
ISSN:
0361-5995
Subject:
Sequoia sempervirens; alluvial soils; altitude; climate; coasts; hardpans; igneous rocks; lakes; land use; mountains; rain; terraces; upland soils; vegetation; California; Pacific Ocean; Sacramento River
Abstract:
... This transect starts on Highway No. 40, near the crest of the Sierra Nevada Mountains, in an area of pine and fir timber. At the beginning of the transect are granitic upland soils of the Holland series; following these are red upland soils of the Aiken series, derived from basic igneous rocks, and next, at a lower elevation, the reddish, grass-covered Auburn soils. The higher terrace lands of the ...
DOI:
10.2136/sssaj1956.03615995002000040027x

59. A Soil-Column Study to Compare the Chemical Availability and Movement of Phosphates from Liquid and Dry Fertilizers

Author:
Robert P. Langguth; George F. Brautigam; L. E. Loveless
Source:
Soil Science Society of America journal 1957 v.21 no.4 pp. 416-419
ISSN:
0361-5995
Subject:
fertilizer application; liquid fertilizers; phosphates; plant growth; soil; water solubility; water soluble phosphates; California
Abstract:
... The chemical availability and movement of phosphates from liquid fertilizers and highly water-soluble dry fertilizers were compared using four widely different California soils. Comparisons of the chemically available phosphate and migration of the phosphates were made at various time intervals after fertilizer application. The method used in determining chemically available phosphate was chosen b ...
DOI:
10.2136/sssaj1957.03615995002100040016x

60. Changes in Organic Carbon and Nitrogen in an Irrigated Soil during 28 Years of Differential Fertilization

Author:
P. F. Pratt; Benoist Goulben; R. B. Harding
Source:
Soil Science Society of America journal 1957 v.21 no.2 pp. 215-219
ISSN:
0361-5995
Subject:
Citrus; acidification; alfalfa hay; ammonium; ammonium sulfate; beans; calcium nitrate; cover crops; fertilizers; irrigated soils; irrigation; nitrogen; organic carbon; pH; straw; triple superphosphate; urea; California
Abstract:
... A study was made of the changes in organic C and N and in the ratio of C:N in the soil of a long-term fertility trial with citrus at the University of California Citrus Experiment Station, Riverside, during 28 years of irrigation and differential fertilization, from 1927 to 1955. All changes in organic C and N and ratio of C:N in the soil were in the surface 0 to 6 inches. Check plots that receive ...
DOI:
10.2136/sssaj1957.03615995002100020020x

61. Green Manuring and Crop Residue Management in Rice Production

Author:
W. A. Williams; D. C. Finfrock; L. L. Davis; D. S. Mikkelsen
Source:
Soil Science Society of America journal 1957 v.21 no.4 pp. 412-415
ISSN:
0361-5995
Subject:
Fabaceae; Mediterranean climate; burning; crop production; crop residue management; crop residues; field experimentation; green manures; nitrogen; rice; rice soils; California
Abstract:
... A series of field experiments were conducted to determine the nature of the effects of green manures and rice crop residue management on lowland rice production. Winter leguminous green manure was determined to be an inexpensive, efficient source of nitrogen which fits in well with continuous rice culture in the Mediterranean type climate of California. The marked response of rice to leguminous gr ...
DOI:
10.2136/sssaj1957.03615995002100040015x

62. Photo Interpretation of Vegetation and Soils in Wild Land Areas of California

Author:
R. E. Nelson; K. E. Bradshaw; A. E. Wieslander
Source:
Soil Science Society of America journal 1957 v.21 no.1 pp. 106-108
ISSN:
0361-5995
Subject:
aerial photography; highlands; soil; soil surveys; vegetation types; wildland; California
Abstract:
... Through stereoscopic study of aerial photographs many features of the vegetation and also ground features can be directly identified. This has a practical application in mapping vegetation and soils in upland areas of California. This paper describes how vegetation types can be identified by analysis of the features visible on aerial photographs. It then describes how soil mapping is facilitated b ...
DOI:
10.2136/sssaj1957.03615995002100010023x

63. Production of Sugar Beets Following Winter Green Manure Cropping in California: I. Nitrogen Nutrition, Yield, Disease, and Pest Status of Sugar Beets

Author:
W. A. Williams; David Ririe
Source:
Soil Science Society of America journal 1957 v.21 no.1 pp. 88-92
ISSN:
0361-5995
Subject:
Vicia; barley; beets; crop production; field experimentation; green manures; legumes; nitrate nitrogen; nitrogen; nutrition; pests; petioles; soil; sucrose; sugar beet; winter; California
Abstract:
... Leguminous and nonleguminous winter green manure crops were grown in two field experiments and followed by sugar beets as a test crop. The latter were fertilized with several levels of nitrogen. The legume, purple vetch, made approximately 80 pounds of nitrogen per acre available to the succeeding crop as indicated by the response in sugar production and beet petiole analysis for nitratenitrogen. ...
DOI:
10.2136/sssaj1957.03615995002100010018x

64. Production of Sugar Beets Following Winter Green Manure Cropping in California: II. Soil Physical Conditions and Associated Crop Response

Author:
W. A. Williams; L. D. Doneen; David Ririe
Source:
Soil Science Society of America journal 1957 v.21 no.1 pp. 92-94
ISSN:
0361-5995
Subject:
barley; crop production; fertilizer application; furrows; green manures; nitrogen; nitrogen fertilizers; soil structure; sugar beet; sugars; tractors; traffic; California
Abstract:
... A procedure is described for measuring volumetrically the rate of water infiltration in field furrows. The technique developed was used to determine the effect of green manure crops on soil structure during the growth of a succeeding crop of sugar beets. At one location a green manure crop of barley increased the rate of infiltration. This result was associated with an increase in sugar production ...
DOI:
10.2136/sssaj1957.03615995002100010019x

65. Relation of Soil Potassium and Magnesium to Magnesium Nutrition of Citrus

Author:
R. C. McColloch; F. T. Bingham; D. G. Aldrich
Source:
Soil Science Society of America journal 1957 v.21 no.1 pp. 85-88
ISSN:
0361-5995
Subject:
Citrus; exchangeable magnesium; exchangeable potassium; fertilizer application; field experimentation; fruit trees; leaf analysis; leaves; magnesium; magnesium fertilizers; nutrient deficiencies; orchards; potassium; potassium fertilizers; soil; California
Abstract:
... Soil and leaf analyses were made in connection with six field experiments involving orange trees fertilized with potassium and/or magnesium. Experimental plots were located in 6 orchards in 4 southern California counties. The concentration of magnesium in spring-cycle leaves was correlated with the degree of leaf symptoms characteristic of magnesium deficiency. Addition of magnesium fertilizer res ...
DOI:
10.2136/sssaj1957.03615995002100010017x

66. Soil-Vegetation Survey Information in Range Management Planning and Administration

Author:
L. T. Burcham; R. Earl Storie
Source:
Soil Science Society of America journal 1957 v.21 no.1 pp. 108-111
ISSN:
0361-5995
Subject:
inventories; planning; private enterprises; ranchers; ranching; range management; soil; surveys; wildland; California
Abstract:
... Since 1947 the State of California has been conducting a soil-vegetation survey—an inventory of the vegetative cover and underlying soils of the wild land areas of the state. This soil-vegetation survey is a particularly remunerative source of much information on the physical factors that affect the business of ranching. Practical applications of this information are discussed herein; a review of ...
DOI:
10.2136/sssaj1957.03615995002100010024x

67. The Soil-Vegetation Survey in California

Author:
Robert A. Gardner; A. E. Wieslander
Source:
Soil Science Society of America journal 1957 v.21 no.1 pp. 103-105
ISSN:
0361-5995
Subject:
aerial photography; soil; surveys; vegetation; wildland; California
Abstract:
... This paper deals briefly with procedures and kinds of information currently being obtained in the soil-vegetation survey of wild land in California and some of the problems encountered. The principal objective of the survey is to obtain accurate basic information on the kind and distribution of soils and natural vegetation, their relationships, and their characteristics and uses as an aid in bette ...
DOI:
10.2136/sssaj1957.03615995002100010022x

68. Uses of Soil-Vegetation Survey Information in Watershed Management

Author:
P. B. Rowe; E. A. Colman
Source:
Soil Science Society of America journal 1957 v.21 no.1 pp. 112-114
ISSN:
0361-5995
Subject:
erosion control; hydrology; soil; surveys; watershed management; wildland; California
Abstract:
... Managing land for purposes of flood and erosion control and for maximum yield of usable water requires, among other things, knowledge of the hydrologic properties of soil in particular areas. Such knowledge can be obtained in the course of soil-vegetation surveys if the surveys are planned to provide the needed kinds of information. This paper discusses the kinds of information required, and point ...
DOI:
10.2136/sssaj1957.03615995002100010025x

69. Cytology and Crossing Behavior of a Haploid Alfalfa Plant

Author:
E. H. Stanford; W. M. Clement
Source:
Agronomy journal 1958 v.50 no.10 pp. 589-592
ISSN:
0002-1962
Subject:
agronomy; alfalfa; autotetraploidy; haploidy; meiosis; metaphase; reciprocal translocation; California
Abstract:
... SynopsisIn a haploid alfalfa plant arising from the California common variety meiosis was essentially regular with bivalent formation predominating. One quadrivalent appeared arising from a reciprocal translocation. Reduced gametes were rarely functional. Polyploid gametes were viable and appeared with relatively high frequency. The good pairing at metaphase would indicate that common alfalfa is e ...
DOI:
10.2134/agronj1958.00021962005000100007x

70. Nitrogen Uptake by Ryegrass from Three Tagged Ammonium Fertilizers

Author:
K. B. Tyler; F. E. Broadbent
Source:
Soil Science Society of America journal 1958 v.22 no.3 pp. 231-234
ISSN:
0361-5995
Subject:
Lolium; ammonium; ammonium fertilizers; ammonium hydroxide; ammonium nitrate; ammonium nitrogen; ammonium sulfate; application rate; cutting; fertilizer application; grasses; greenhouses; organic nitrogen; soil; total nitrogen; California
Abstract:
... A comparison of the utilization of ammonium nitrogen from NH₄OH, (NH₄)₂SO₄, and NH₄NO₃ in two California soils was made in greenhouse pot tests. These fertilizers were applied at the rate of 200 pounds N per acre in each two applications, with N¹⁵ used to label the ammonium source of N in the first application. Ryegrass was seeded after the initial fertilizer application and four cuttings of grass ...
DOI:
10.2136/sssaj1958.03615995002200030012x

71. Plant Height Times Ground Cover versus Clipped Samples for Estimating Forage Production

Author:
Raymond A. Evans; Milton B. Jones
Source:
Agronomy journal 1958 v.50 no.9 pp. 504-506
ISSN:
0002-1962
Subject:
developmental stages; fertilizers; forage; forage production; plant height; vegetation; California
Abstract:
... SynopsisPlant height times ground cover (HG) can be used to estimate relative forage production and differentiate treatment effects on fertilizer plots in the annual range type of California. HG and clipping values were highly comparable for estimating relative forage productivity on these plots. A quantitative relationship between clipped samples and HG values was indicated, within fairly broad l ...
DOI:
10.2134/agronj1958.00021962005000090003x

72. Rapid determination of sex in Rhagoletis completa Cresson

Author:
Moffitt, H.R.
Source:
Journal of economic entomology 1958 v.51 no.4 pp. 551
ISSN:
0022-0493
Subject:
Rhagoletis; sex determination; females; males; plant pests; Juglans; California
DOI:
10.1093/jee/51.4.551

73. Transformations and Movement of Urea in Soils

Author:
F. E. Broadbent; G. N. Hill; K. B. Tyler
Source:
Soil Science Society of America journal 1958 v.22 no.4 pp. 303-307
ISSN:
0361-5995
Subject:
absorption; ammonia; hydrolysis; leaching; nitrates; nitrification; pH; sandy loam soils; urea; California
Abstract:
... Samples of several California soils were incubated in a controlled environment chamber after addition of varying amounts of urea in solution. Samples were analyzed after time intervals ranging from 1 day to 8 weeks. In short-term experiments analyses for residual urea were performed at frequent, short intervals, and in longer-term experiments nitrification of the hydrolysis product was followed. A ...
DOI:
10.2136/sssaj1958.03615995002200040010x

74. Characteristics and Genesis of a Solodized-Solonetz of California

Author:
Lynn D. Whittig
Source:
Soil Science Society of America journal 1959 v.23 no.6 pp. 469-473
ISSN:
0361-5995
Subject:
A horizons; B horizons; carbonates; clay; clay fraction; exchangeable sodium; illite; kaolin; magnesium; montmorillonite; sodium; soluble salts; vermiculite; California
Abstract:
... Field and laboratory studies of a soil (Solano series) of the lower Sacramento Valley characterize it as a solodized-solonetz. The profile has a sharply delineated, alkaline, fine-textured, columnar B horizon below an acid, medium-textured A horizon. Remnants of an older columnar B horizon persist in the present upper leached portion of the soil. Soluble salts and free carbonates and much of the c ...
DOI:
10.2136/sssaj1959.03615995002300060031x

75. Autotetraploidy and Linkage in Alfalfa— A Study of Resistance to Two Species of Root-Knot Nematodes

Author:
B. P. Goplen; E. H. Stanford
Source:
Agronomy journal 1960 v.52 no.6 pp. 337-342
ISSN:
0002-1962
Subject:
Meloidogyne hapla; agronomy; alfalfa; autotetraploidy; root-knot nematodes; California
Abstract:
... SynopsisResistance to two species of root-knot nematodes (Meloidogyne hapla and M. javanica javanica) in an alfalfa clone selected from Vernal is controlled by single dominant tetrasomic genes for each species. The genes governing resistance to the two species are different but closely linked. One other Vernal selection shows resistance to both species and a third Vernal selection and one from the ...
DOI:
10.2134/agronj1960.00021962005200060011x

76. Botanical Composition Changes in Annual Grassland as Affected by Fertilization and Grazing

Author:
Milton B. Jones; Raymond A. Evans
Source:
Agronomy journal 1960 v.52 no.8 pp. 459-461
ISSN:
0002-1962
Subject:
agronomy; botanical composition; fertilizers; grasslands; California
Abstract:
... SynopsisChanges in botanical composition on the annual range type of California indicated significant fertilizer-grazing, fertilizer-year, and grazing-year interactions. Direct projection of botanical composition data from ungrazed fertilizer plots would not accurately predict changes resulting from the same fertilizer on grazed areas. ...
DOI:
10.2134/agronj1960.00021962005200080011x

77. Election Polling Trends, 1960

Author:
Elmo Roper; Paul Perry; Mervin D. Field
Source:
American behavioral scientist 1960 v.4 no.2 pp. 3-5
ISSN:
0002-7642
Subject:
politics; public opinion; California
Abstract:
... We recently conducted a "poll of the pollsters," asking several of the major Amer ican public opinion polling organizations what contributions or innovations they were making to improve election studies and forecasting. Elmo Roper and Associates, the American Institute of Public Opinion, and the Field Research Company (which con ducts the California Poll) each summarized the directions their effor ...
DOI:
10.1177/000276426000400202

78. Nitrite Transformations in California Soils

Author:
K. B. Tyler; F. E. Broadbent
Source:
Soil Science Society of America journal 1960 v.24 no.4 pp. 279-282
ISSN:
0361-5995
Subject:
acid soils; alkaline soils; calcareous soils; cell respiration; nitrates; nitrification; nitrite nitrogen; nitrites; nitrogen; oxidants; oxidation; soil microorganisms; soil quality; temperature; California
Abstract:
... Incubation studies of factors influencing nitrite oxidation in four California soils were conducted at two temperatures—45° and 75° F. In acid soils nitrite transformations were found to be highly sensitive to nitrite concentration in the soil and were inhibited by very low levels. Nitrite had less effect on the second step of nitrification in alkaline soils. Nitrite oxidizers were shown to be ver ...
DOI:
10.2136/sssaj1960.03615995002400040020x

79. Comparative Rates of Decomposition in Soil of Wood and Bark Particles of Several Softwood Species

Author:
F. E. Allison; C. J. Klein
Source:
Soil Science Society of America journal 1961 v.25 no.3 pp. 193-196
ISSN:
0361-5995
Subject:
Abies magnifica; Calocedrus decurrens; Larix occidentalis; Picea; Pinus echinata; Pseudotsuga menziesii; Sequoia sempervirens; Tsuga canadensis; carbon dioxide; carbon dioxide production; nitrogen; sawdust; softwood; soil; California
Abstract:
... The rates of decomposition of 10 kinds of finely-ground woods and the corresponding barks at two nitrogen levels were determined in the laboratory by measuring CO₂ evolution over periods varying from 53 to 800 days. The following species were studied: California incense cedar, cypress, redwood, western larch, eastern hemlock, red fir, white fir, Douglas-fir, red cedar, and Engleman spruce. The woo ...
DOI:
10.2136/sssaj1961.03615995002500030016x

80. How Executives Handle "Hot" Questions

Author:
Keith M. Henderson
Source:
American behavioral scientist 1961 v.5 no.1 pp. 5-7
ISSN:
0002-7642
Subject:
government and administration; social sciences; California
Abstract:
... Mr. Henderson of the University of Southern California's School of Public Administration reports his use of content analysis to examine the practices of governmental executives in coping with sensitive interview questions. In an ex tensive sample, less than 40 per cent of interview questions received unequivocal answers. We suggest that social science moves in part by the ramifying use of techniqu ...
DOI:
10.1177/000276426100500103

81. Response of Soybeans to Dates of Planting in the Imperial Valley of California

Author:
George H. Abel
Source:
Agronomy journal 1961 v.53 no.2 pp. 95-98
ISSN:
0002-1962
Subject:
agronomy; seed yield; California
Abstract:
... SynopsisWith successive delays in planting, the time from planting to flowering was reduced more for later varieties than for earlier varieties. In contrast, the time from flowering to maturity was reduced more for earlier than for later varieties. Maturity was delayed relatively little by each successive delay in planting. Date of planting affected the seed yield of intermediate and late varietie ...
DOI:
10.2134/agronj1961.00021962005300020010x

82. Wheatgrass Variety Performance on Summer Rangeland in Northeastern California

Author:
Donald R. Cornelius; Duncan E. Williams
Source:
Agronomy journal 1961 v.53 no.5 pp. 328-331
ISSN:
0002-1962
Subject:
agronomy; rangelands; California
Abstract:
... SynopsisAgropyron tricophorum, A. intermedium, and A. elongatum appeared better adapted to the area than species in the crested wheatgrass complex. ...
DOI:
10.2134/agronj1961.00021962005300050019x

83. The Use of Field Maturity Data to Establish Optimum Harvest Period for Merion Kentucky Bluegrass Seed Production

Author:
D. C. Sumner; K. E. Lindsey
Source:
Agronomy journal 1962 v.54 no.5 pp. 416-419
ISSN:
0002-1962
Subject:
Poa pratensis; agronomy; harvest date; California
Abstract:
... SynopsisPresent data illustrate the desirability of establishing field maturity standards upon which to base field readiness for seed harvest under California climatic conditions. Harvesting when 20 to 35% of the panicles are fully mature appears to be the range of field maturity at which maximum seed yields and minimum preharvest shatter losses occur. ...
DOI:
10.2134/agronj1962.00021962005400050013x

84. Availability and Fixation of Added Potassium in Two California Soils When Cropped to Cotton

Author:
A. L. Page; F. T. Bingham; T. J. Ganje; M. J. Garber
Source:
Soil Science Society of America journal 1963 v.27 no.3 pp. 323-326
ISSN:
0361-5995
Subject:
Gossypium; application rate; cotton; greenhouses; magnesium; plant analysis; potassium; potassium fertilizers; soil; California
Abstract:
... Field studies have recently demonstrated the occurrence of K deficiency in California cotton fields, and, further, unusually high rates of K fertilizers were required to correct the deficiencies. A greenhouse and laboratory study demonstrated that fixation of the added K was the reason high K applications were required. Two soils from problem fields were treated with K at rates ranging from 0 to 4 ...
DOI:
10.2136/sssaj1963.03615995002700030032x

85. Ion Sorption by Soil Separates and Exchange Equilibria Involving Sodium, Potassium, and Rubidium

Author:
F. H. le Roux; N. T. Coleman
Source:
Soil Science Society of America journal 1963 v.27 no.6 pp. 619-623
ISSN:
0361-5995
Subject:
X-ray diffraction; cation exchange capacity; chromatography; clay; ion exchange; potassium; potassium fertilizers; radionuclides; rubidium; silt; sodium; soil separates; sorption; vermiculite; California
Abstract:
... Sodium-potassium exchange reactions were studied with four California soils, utilizing chromatographic and equilibrium procedures. Apparent exchange constants varied with ion saturation and indicated a larger affinity for potassium as its equivalent fraction on exchange sites decreased. This was especially true for soils containing biotite-hydrobiotite-vermiculite in the coarse fractions. Clay and ...
DOI:
10.2136/sssaj1963.03615995002700060016x

86. Leaching and Gaseous Losses of Nitrogen From Some Nontilled California Soils

Author:
R. B. Harding; T. W. Embleton; W. W. Jones; T. M. Ryan
Source:
Agronomy journal 1963 v.55 no.6 pp. 515-518
ISSN:
0002-1962
Subject:
acid soils; ammonia; ammonium nitrate; ammonium sulfate; calcium nitrate; comparative study; leaching; nitrogen; nitrogen fertilizers; sprinkler irrigation; urea; urea formaldehyde; California
Abstract:
... SynopsisLeaching and volatile losses of N from some southern California soils were studied when various nitrogenous fertilizers were broadcast and unincorporated. Under sprinkler irrigation, substantial leaching losses occurred with Ca(NO₃)₂. Manure was an inefficient source of N. Substantial volatile losses of NH₃ occurred with urea on calcareous as well as acid soils. In comparative studies of a ...
DOI:
10.2134/agronj1963.00021962005500060003x

87. Mineralogy of Soil Separates and Alkali-Ion Exchange-Sorption

Author:
F. H. le Roux; J. G. Cady; N. T. Coleman
Source:
Soil Science Society of America journal 1963 v.27 no.5 pp. 534-538
ISSN:
0361-5995
Subject:
X-radiation; biotite; cation exchange capacity; clay; magnetism; potassium; rubidium; sand; silt; sodium chloride; soil minerals; soil separates; specific gravity; vermiculite; weathering; California
Abstract:
... X-ray and petrographic examination of a number of California soils derived from granite-diorite sedimentary material showed the presence of biotite weathering products which appeared to include slightly altered biotite, vermiculite, and a regularly interstratified biotite-vermiculite. Magnetic and specific gravity separations of fine sand- and silt-size material from a Hanford soil yielded relativ ...
DOI:
10.2136/sssaj1963.03615995002700050020x

88. Toxicity to Garden Peas of Certain Finely-Ground Woods and Barks Mixed with Soil

Author:
F. E. Allison; W. H. DeMar; J. H. Smith
Source:
Agronomy journal 1963 v.55 no.4 pp. 358-360
ISSN:
0002-1962
Subject:
Calocedrus decurrens; Pinus; agronomy; bark; soil; toxicity; wood; California
Abstract:
... SynopsisTwenty-two of 28 woods and barks studied produced no significant toxicity, 4 of either the woods or barks caused slight inhibition of growth, and 2 (California incense cedar wood and white pine bark) were very injurious. ...
DOI:
10.2134/agronj1963.00021962005500040017x

89. Yield, Percent Nitrogen, and Total Nitrogen Uptake of Various California Annual Grassland Species Fertilized with Increasing Rates of Nitrogen

Author:
Milton B. Jones
Source:
Agronomy journal 1963 v.55 no.3 pp. 254-257
ISSN:
0002-1962
Subject:
grasslands; nitrogen; spring; total nitrogen; vegetative growth; winter; California
Abstract:
... SynopsisNear maximum yields resulted where 80 pounds N per acre were applied, but carryover was measurable only where 160 pounds were used. In nonleguminous plants, percent N increased with N rates during the vegetative stage, but at maturity it was less where 40 pounds N were applied than in the control. N uptake increased with N rate during winter, but uptake on unfertilized plots during the spr ...
DOI:
10.2134/agronj1963.00021962005500030014x

90. Arctostaphylos Myrtifolia, Its Biology and Relationship to the Problem of Endemism

Author:
Roman Gankin; Jack Major
Source:
Ecology 1964 v.45 no.4 pp. 792-808
ISSN:
0012-9658
Subject:
Arctostaphylos; acid soils; acid tolerance; altitude; biogeography; climate; diploidy; evapotranspiration; heat; hills; indigenous species; leaching; mountains; nutrients; seedlings; soil parent materials; spring; summer; temperature; vegetation; winter; California; Mediterranean region; Sierra Nevada (California)
Abstract:
... Arctostaphylos myrtifolia is a California endemic plant limited to only certain outcrops of an Eocene laterite in the Sierra Nevada foothills near Ione and to a kaolin—altered rhyolite and an acid sericitic schist eastward at higher altitudes of 500 m. Taxonomically the diploid species is isolated. Morphologically it resembles a low, sclerophyllous heath. The plants are killed by fire, but seedlin ...
DOI:
10.2307/1934926

91. Bovine Lymphosarcoma in California II. The Thymic Form

Author:
D.L. Dungworth; G.H. Theilen; J. Lengyel
Source:
Veterinary pathology v.1 no.4 pp. 323-350
ISSN:
1544-2217
Subject:
Hereford; adults; animal pathology; bone marrow; calves; enzootic bovine leukosis; lymphosarcoma; thymus gland; California
Abstract:
... Fourteen cases of bovine lymphosarcoma in which the primary lesion appeared to be in the thymus have been described. The animals were between 7 and 30 months of age and 10 were of the Hereford breed. Most of the lymphosarcoma cases encountered in Hereford cattle in California have been of this type, but there are insufficient epizootiological data to prove that this is a real, not an apparent, pre ...
DOI:
10.1177/030098586400100403

92. Chaparral Succession in a San Gabriel Mountain Area of California

Author:
James H. Patric; Ted L. Hanes
Source:
Ecology 1964 v.45 no.2 pp. 353-360
ISSN:
0012-9658
Subject:
Ceanothus; chaparral; cherries; forests; sage; shrublands; shrubs; sugars; topographic slope; wildfires; woodlands; California
Abstract:
... Succession in chaprral stands dating to wildfires of 1896 and 1919 was studied on the San Dimas Experimental Forest. Data from 20 pairs of one—hundredth acre plots were segregated by the Uppsala method into five plant associations, each having two or more species in common. Ceanothus and chamise were being eliminated from north—facing stands which then were dominated by scrub oak, holly—leaved che ...
DOI:
10.2307/1933848

93. Effect of Applied Sulfur on Yield and Sulfur Uptake of Various California Dryland Pasture Species

Author:
Milton B. Jones
Source:
Agronomy journal 1964 v.56 no.2 pp. 235-237
ISSN:
0002-1962
Subject:
agronomy; arid lands; grasses; pastures; sulfur; California
Abstract:
... SynopsisForage production was increased by sulfur applied up to 40 pounds per acre. The subclover component increased up to 80 pounds of S per acre. Annual grass yields at the high rates of S were decreased by clover competition. Higher rates of S application had a greater carry-over effect than the 20-pound raw. Subclover and hardingrass had the greatest increase in uptake of S with increasing ra ...
DOI:
10.2134/agronj1964.00021962005600020035x

94. Isolated Pinus Ponderosa Forests on Sandy Soils near Santa Cruz, California

Author:
James R. Griffin
Source:
Ecology 1964 v.45 no.2 pp. 410-412
ISSN:
0012-9658
Subject:
Pinus ponderosa; Sequoia sempervirens; flammability; forest soils; forests; mountains; sand; sandy soils; texture; California
Abstract:
... About 7,000 acres of sandy soil derived from Miocene marine sand deposits occur in central Santa Cruz County, California. Within the Santa Cruz Mountains, Pinus ponderosa is restricted to open forests on these sandy soil. The pine communities, apparent edaphic "climaxes," are surrounded by redwood and mixed evergreen forests on soils of finer texture. Regional vegetation patterns may be governed b ...
DOI:
10.2307/1933863

95. Natural History of Two Beach Hoppers of the Genus Orchestoidea (Crustacea: Amphipoda) with Reference to their Complemental Distribution

Author:
Darl E. Bowers
Source:
Ecology 1964 v.45 no.4 pp. 677-696
ISSN:
0012-9658
Subject:
Amphipoda; Coleoptera; Procyon lotor; air; appendages; arid zones; beaches; birds; burrowing; burrows; capillarity; cliffs; cutting; dunes; energy expenditure; females; freshwater; gills; habitats; humans; males; moles; natural history; oxygen; particle size; population density; predators; sand; seawater; tap water; texture; water content; California
Abstract:
... Beach hoppers of the genus Orchestoidea, abundant amphipods of the sandy beaches of central California, all live in similar ecological positions on these shores. In this study, differences mainly between the two large species O. californiana and O. corniculata are examined. Competition for burrows between hoppers of the same species is commonly observed. In the early morning hours, large males may ...
DOI:
10.2307/1934916

96. New insecticides against adults of two species of Hippelates eye gnats

Author:
Mulla, M.S.; Adams, T.S.
Source:
Journal of economic entomology 1964 v.57 no.4 pp. 505-509
ISSN:
0022-0493
Subject:
Liohippelates collusor; insect control; insecticides; California
DOI:
10.1093/jee/57.4.505

97. Optimum Location, Number and Size of Processing Plants with Raw Product and Final Product Shipments

Author:
Gordon A. King; Samuel H. Logan
Source:
American journal of agricultural economics 1964 v.46 no.1 pp. 94-108
ISSN:
0002-9092
Subject:
agricultural economics; beef; cattle; economies of scale; linear programming; models; raw materials; shipping; slaughter; slaughterhouses; California
Abstract:
... The transhipment model of linear programming is utilized in this study to consider simultaneously the costs of shipping raw materials, processing, and shipping final product. The problem concerns the location and size of California cattle slaughtering plants given the location and quantity of slaughter animals and the final product demand. An iterative procedure is used to incorporate economies of ...
DOI:
10.2307/1236474

98. Studies On Succession, Distribution, and Phenology of Imported Parasites of Therioaphis Trifolii (Monell) In Southern California

Author:
R. Van Den Bosch; E. I. Schlinger; E. J. Dietrick; J. C. Hall; B. Puttler
Source:
Ecology 1964 v.45 no.3 pp. 602-621
ISSN:
0012-9658
Subject:
Aphelinus; Praon; Therioaphis trifolii; Trioxys; biological control; biological properties and phenomena; climate; coastal plains; parasites; phenology; spring; valleys; California; Colorado Desert; Mojave Desert
Abstract:
... The three introduced hymenopterous parasites of Therioaphis trifolii (Monell) were intensively studied for six years in four major climatic regions of southern California. These regions were the Colorado Desert the south coastal plain (two subdivisions), the western Mojave Desert, and the southern San Joaquin Valley. The studies revealed a succession in predominance of Trioxys utilis Muesebeck ove ...
DOI:
10.2307/1936112

99. Sulfate-Sulfur Concentration as an Indicator of Sulfur Status in Various California Dryland Pasture Species

Author:
Milton B. Jones; W. E. Martin
Source:
Soil Science Society of America journal 1964 v.28 no.4 pp. 539-541
ISSN:
0361-5995
Subject:
Phalaris aquatica; Trifolium hirtum; annuals; arid lands; fertilizer rates; flowering; grasses; nitrogen fertilizers; pastures; sulfur; sulfur fertilizers; wilting; California
Abstract:
... Sulfate-sulfur values in subclover and soft chess under high N fertilizer were approximately equal over a wide range of S fertilizer levels. With no fertilizer N the SO₄-S values of annual grasses including soft chess were higher than those of rose or subclover. Hardinggrass was particularly high in SO₄-S. Where no N was applied the SO₄-S concentration in subclover decreased as the plants advanced ...
DOI:
10.2136/sssaj1964.03615995002800040026x

100. The Epifauna of a California Siltstone Reef

Author:
Willis E. Pequegnat
Source:
Ecology 1964 v.45 no.2 pp. 272-283
ISSN:
0012-9658
Subject:
biotopes; coasts; fish; food availability; organic matter; population density; surface waves; turbulent flow; California
Abstract:
... Between 300 and 400 described species of macroscopic animals (including 22 fishes) were encountered on 1,385 m 2 of a silt—stone, submarine hogback and adjacent mixed bottom located in the shallow sublittoral (9.5 to 18 m depth) about 500 m off the coast of Corona del Mar, California. The components of the epifauna are not distributed uniformly over the reef. Both the numbers of species and indivi ...
DOI:
10.2307/1933840