California Agriculture, December 1950
Volume 4, Number 12
Restoration of redwoods by spot-seeding
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
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.
Tomato insect survey: Studies indicate direct field seeding increases early season problem
by A. E. Michelbacher, W. W. Middlekauff, E. E. Stevenson
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.
Spot-wise seeding for redwood: Artificial reforestation by seeding or planting necessary on cutover land devoid of seed trees
by Emanuel Fritz
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.
Improved egg size: High heritability of egg weight gives rapid response to selective breeding
by I. Michael Lerner
Not available – first paragraph follows: Breeding for egg size differs in several important respects from other problems of poultry breeders.
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
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.
Eradication of pocket gophers: Comparative field tests demonstrate best poisons, baits, and dosages for practical gopher control
by Milton A. Miller
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.
Walnut cuttings: Treatment with hormones, callusing in sand for vegetative propagation
by E. F. Serr
Not available – first paragraph follows: Vegetative propagation of Paradox hybrid walnut rootstocks was successful this spring in trials carried on at Davis.
Mechanical cotton harvesting: Harvesting costs, value of field waste and grade-loss contribute to economics of machine-picking of cotton
by Trimble R. Hedges