California Agriculture, October 1953

Volume 7, Number 10

research articles

Yellow dwarf disease: A new and damaging virus disease of cereals transmitted by aphids
by John W. Oswald , Byron R. Houston
pp3-4, doi#10.3733/ca.v007n10p3
Abstract
First of two articles on a study of yellow dwarf of cereals in California
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California's wheat: Most of state's wheat of strains developed by backcross breeding
by Coit A. Suneson , Charles W. Schaller , Loren L. Davis
pp4, doi#10.3733/ca.v007n10p4
Abstract
Not available – first paragraph follows: A total of 15 improved backcrossed strains of popular wheat varieties were distributed in California between 1937 and 1950.
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Natural enemies of olive scale: Aggressive parasitic wasp promising as means of suppressing olive scale in California orchards
by R. L. Doutt
pp5, doi#10.3733/ca.v007n10p5
Abstract
Not available – first paragraph follows: Reductions of 90% to 98.6% in olive scale populations in California orchards have been achieved by the use of natural enemies of the pest.
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Stump grafting old citrus: Navel orange scions set fruit in fifth growing season following grafting to stumps old old seedling trees
by Ralph G. LaRue
pp6, doi#10.3733/ca.v007n10p6
Abstract
Not available – first paragraph follows: After four growing seasons, thriving scions grafted into old seedling orange tree stumps demonstrated a way to rehabilitate orchards where the original variety is no longer profitable.
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Water spot on navel oranges: Only slight injury observed in orchards treated with parathion for California red scale control
by L. A. Riehl , G. E. Carman
pp7-8, doi#10.3733/ca.v007n10p7
Abstract
Not available – first paragraph follows: Water spot injury to navel oranges was less on trees treated with 25% parathion wettable powder than on trees sprayed with oil, in four observed orchards in Los Angeles County.
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Lemon cuttings with fruit rooted: Means of prolonging useful life of lemon fruits developed at Riverside valuable aid in research
by Louis C. Erickson , Paul DeBach
pp8, doi#10.3733/ca.v007n10p8
Abstract
Not available – first paragraph follows: Light green Eureka lemon fruits— with 1″ to 2″ stems—were rooted successfully in an experiment designed to develop a means of prolonging the useful life of lemon fruits for studies of a physiological, biochemical, and entomological nature.
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Leaf drop in citrus: Excessive fall regardless of cause may lower soluble solids in fruit
by W. A. Rhoads , R. T. Wedding
pp9, doi#10.3733/ca.v007n10p9
Abstract
Not available – first paragraph follows: Excessive leaf drop of citrus—resulting from oil sprays, insect or mite damage, or physiological disorders—probably materially interferes with the total carbohydrate production of the tree, and may result in a lower level of total soluble solids in the fruit at harvest.
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Systemic pesticides on walnut: Preliminary studies promising for control of European red mite and walnut aphid in southern California
by J. C. Ortega
pp10-11, doi#10.3733/ca.v007n10p10
Abstract
Not available – first paragraph follows: European red mite and walnut aphid in the cool coastal regions of southern California may cause a premature dropping of walnut leaves, predisposing the nuts to sunburn injury and lowering the quality of the nut meats.
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Zutano avocado cuttincrs rooted: Leafy-twig cuttings of vigorous Mexican variety 'readily rooted without special procedures or hormone treatments
by A. R. C. Haas , Joseph N. Brusca
pp11-12, doi#10.3733/ca.v007n10p11
Abstract
Not available – first paragraph follows: Leafy-twig cuttings from the Zutano avocado—a vigorously growing Mexican variety—readily rooted, without special procedures or hormone treatment, in propagation trials at the Riverside Citrus Experiment Station.
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Chlorosis in ornamentals: Control of lime-induced chlorosis by soil applications of chelated iron can be effective
by A. Wallace , C. P. North , A. M. Kofranek , O. R. Lunt
pp13-14, doi#10.3733/ca.v007n10p13
Abstract
Not available – first paragraph follows: Thousands of chlorotic trees and shrubs—on lime soil in southern California—can be made to become green by soil applications of iron-containing chelates.
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Rooting bed test: Soil conditioner in nursing bed eased chrysanthemum transplanting
by Edward J. Bowles
pp14, doi#10.3733/ca.v007n10p14
Abstract
Not available – first paragraph follows: A synthetic soil conditioner, CRD-186—Krilium—was tested in rooting beds of commercially grown chrysanthemums for its influence on total root growth and the transplant operation.
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Harvesting sutter pink beans: Effects of field exposure on change of color may be reduced by early harvesting and threshing
by Francis L. Smith , John H. Lindt
pp15, doi#10.3733/ca.v007n10p15
Abstract
Not available – first paragraph follows: Browning in the Suffer Pink bean—resulting in a lower selling price—can be reduced by early harvest and threshing but at the expense of bean size and yield.
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General Information

Cotton quotas and allotments: Estimated acreage shifts from cotton to other crops in 1954 as result of expected national allotments
by Trimble R. Hedges, C. O. McCorkle
pp2-14, doi#10.3733/ca.v007n10p2
PDF