California Agriculture, December 1950

Volume 4, Number 12
Restoration of redwoods by spot-seeding

research articles

Seedlings on old citrus soils: Effect of water, acid, alkali, and alcohol leaching of old citrus soils on growth of citrus seedlings
by James P. Martin
pp3-11, doi#10.3733/ca.v004n12p3
Abstract
Not available – first paragraph follows: Orange, lemon, and grapefruit trees in most southern California citrus-producing areas do not grow so well when planted in soil previously cropped to citrus as when planted in a soil for the first time.
Expanded Abstract | PDF

Tomato insect survey: Studies indicate direct field seeding increases early season problem
by A. E. Michelbacher , W. W. Middlekauff , E. E. Stevenson
pp4-10, doi#10.3733/ca.v004n12p4
Abstract
Not available – first paragraph follows: The insect situation in tomato plantings during the early season of 1950 was more serious than during the past several years.
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Spot-wise seeding for redwood: Artificial reforestation by seeding or planting necessary on cutover land devoid of seed trees
by Emanuel Fritz
pp5-13, doi#10.3733/ca.v004n12p5
Abstract
Not available – first paragraph follows: Cutover redwood timber lands—those without seed trees—can not be expected to reforest naturally and need help from artificial reforestation.
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Improved egg size: High heritability of egg weight gives rapid response to selective breeding
by I. Michael Lerner
pp6, doi#10.3733/ca.v004n12p6
Abstract
Not available – first paragraph follows: Breeding for egg size differs in several important respects from other problems of poultry breeders.
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Phosphate test for grain land: Bingham soil phosphate test enables accurate prediction of yield response of cereals to phosphorus fertilization
by W. E. Martin , J. R. Buchanan
pp7-12, doi#10.3733/ca.v004n12p7
Abstract
Not available – first paragraph follows: Grain fertilizer tests with uniform fertilizers were applied in over 200 separate field tests in 40 counties during the past three seasons—covering most grain-growing areas of the state and representing a wide range of soil series.
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Eradication of pocket gophers: Comparative field tests demonstrate best poisons, baits, and dosages for practical gopher control
by Milton A. Miller
pp8-10, doi#10.3733/ca.v004n12p8
Abstract
Not available – first paragraph follows: The most effective and economical method for eradicating pocket gophers-responsible for a major share of the multimillion dollar damage inflicted annually on California agriculture by field rodents—is by poisoning.
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Walnut cuttings: Treatment with hormones, callusing in sand for vegetative propagation
by E. F. Serr
pp11, doi#10.3733/ca.v004n12p11
Abstract
Not available – first paragraph follows: Vegetative propagation of Paradox hybrid walnut rootstocks was successful this spring in trials carried on at Davis.
Expanded Abstract | PDF