California Agriculture, September 1958

Volume 12, Number 9
Heavy irrigation treatment for leaf scorch

research articles

Development of prune harvester: New pickup principle improves machine designed to harvest French prunes from ground after removal from tree by shaking
by R. B. Fridley , P. A. Adrian
pp3-11, doi#10.3733/ca.v012n09p3
Abstract
Abstract Not Available – First paragraph follows: A basic analysis of various pickup principles applied in the construction of prune harvesters was made during the spring of 1957 to develop—if possible—a gentle method of fruit pickup which would simulate hand picking and give a positive pickup without disturbing the soil surface.
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Sodium leaf scorch of apricot: Condition causing damage to orchards in Hemet area improved by heavy irrigation treatments with contour basin checks
by Dean D. Halsey , N. L. McFarlane , Richard J. Schut
pp4-5, doi#10.3733/ca.v012n09p4
Abstract
Abstract Not Available – First paragraph follows: Salting out, or dieback—sodium scorch—of apricot was improved substantially—in an experimental plot near Hemet—by the heavy application of irrigation water as a corrective treatment.
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Apricot irrigation studies: Consumptive use of water by trees and soil salinity control experiment conducted in western Stanislaus County orchards
by Clyde E. Houston , Jewell L. Meyer
pp6, doi#10.3733/ca.v012n09p6
Abstract
Abstract Not Available – First paragraph follows: Excess water added to apricot orchards irrigated with San Joaquin River water—in Stanislaus County—removes accumulated salts and maintains a favorable salt balance in the soil.
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Soil salinity hazard to seeds: Planting variation to minimize salinity to germinating seeds successful in field tests with alfalfa in Palo Verde Valley
by Lloyd Burri , Milton Fireman , Otis A. Harvey
pp7, doi#10.3733/ca.v012n09p7
Abstract
Abstract Not Available – First paragraph follows: A perfect stand of Moapa alfalfa in an experimental offset planting—a single row on the shoulder of double row beds—was obtained in an area where soil salinity usually is a hazard to germinating seeds.
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Asparagus irrigation studies: Evidence indicates asparagus on sedimentary soil can utilize about 20″ of irrigation in addition to a normal 16″ rainfall
by G. C. Hanna , L. D. Doneen
pp8-15, doi#10.3733/ca.v012n09p8
Abstract
Abstract Not Available – First paragraph follows: Frequency of irrigation in relation to yield of asparagus on sedimentary soil was the subject of an eight-year experiment at Davis.
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Nematodes and bacteria on rose: Root-lesion nematode and hairy-root bacterium on important rose crop in southern California controlled by treatments
by S. A. Sher , D. E. Munnecke
pp9-10, doi#10.3733/ca.v012n09p9
Abstract
Abstract Not Available – First paragraph follows: Two limiting factors in the $4 million field grown rose bush crop of southern California are root-lesion and hairy-root diseases.
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Gibberellin on orange fruit: Content of ascorbic acid, hydrogen ion and juice increased while rind color, thickness and texture coarseness decreased
by C. W. Coggins , H. Z. Hield
pp11, doi#10.3733/ca.v012n09p11
Abstract
Abstract Not Available – First paragraph follows: To evaluate the influence of gibberellin on citrus fruit development and quality—and other tree responses—Thompson Improved Navel Oranges were treated with potassium gibberellate during the first week of November 1957. Oranges 2.5″-2.6″ in diameter were individually-dipped along with four subtending leaves in the treatment solutions. Concentrations of technical gibberellin—containing approximately 82% potassium gibberellate—used were 500, 1,000, and 2,000 ppm—parts per million. A non-ionic wetting agent was added at 0.05%. Oranges which served as controls were selected for size but were not treated. A randomized complete block design with eight replications was used. Each plot consisted of three trees with 17 test oranges on each.
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Defoliation for early pruning Bartlett: Pears defoliated without tree injury by application of caustic dust in tests on most efficient use as defoliant
by W. H. Griggs
pp12-15, doi#10.3733/ca.v012n09p12
Abstract
Abstract Not Available – First paragraph follows: The principal ingredient of a lime nitrogen fertilizer—calcium cyanamide—has initial toxic or caustic properties, in the presence of moisture, that cause plant leaves to absciss.
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Rootstock effect on olive: Influence on tree growth is found to vary with the scion variety in tests conducted at Winters, Corning, and Lindsay
by H. T. Hartmann
pp13-14, doi#10.3733/ca.v012n09p13
Abstract
Abstract Not Available – First paragraph follows: In experimental olive plantings—using three scion varieties and 12 different rootstocks—the principal rootstock effect on the scion variety was in tree vigor. However, any rootstock influence noted in a given scion-rootstock combination did not necessarily hold true for another scion variety on the same rootstock.
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General Information

Strawberry processing costs: Cost-reducing adjustments in processing methods, plant size, and hours of operation may yield substantial savings
by Carleton C. Dennis
pp2-16, doi#10.3733/ca.v012n09p2
PDF