California Agriculture, February 1950
Volume 4, Number 2
Air-carrier sprayer with volatile discharge head
Tests on girdling olive trees: Indicate practice most effective when done in February before flower parts of the olive begin to develop
by H. T. Hartmann, R. M. Hoffman
Not available – first paragraph follows: Experiments on girdling olive trees were conducted during the 1949 season in orchards in Tulare, Madera, Solano, Butte, Glenn, and Tehama counties.
Rootstocks with dwarfing effect: Investigations indicate some citrus rootstocks exert dwarfing effect on scions budded to them
by W. P. Bitters
Not available – first paragraph follows: Several of 60-odd rootstocks used in an extensive citrus rootstock trial of the Citrus Experiment Station at Riverside exerted a dwarfing effect on scions budded onto them.
Fruit drop of lemons: 2,4-D and 2,4,5-T water sprays reduce mature fruit drop, with little effect on drop of immature fruit
by Wm. S. Stewart, H. Z. Hield
Not available – first paragraph follows: Field-plot measurements of the effect of 2,4-D and related compounds on fruit drop, fruit production, and leaf drop of Eureka lemon trees were made on eight experimental field plots.
Injections for citrus trees: Phosphorus and potassium given lemon trees by injections in experimental study of nutrient deficiencies
by D. G. Aldrich, A. R. C. Haas
Not available – first paragraph follows: The injection method of supplying nutrient elements to trees was chosen at the outset of a study as to whether citrus trees would respond to potassium applications.
Air-carrier spray equipment: Economical and effective in applying concentrated spray mixtures
by Arthur D. Borden
Not available – first paragraph follows: Field investigations with different spray methods have shown that heavy applications—1,100 gallons per acre on average sized trees, to 2,500 gallons on larger trees—are not necessary to obtain satisfactory deposits of the spray chemicals and control of the insects and plant disease problems.
Selective weed killers: Character of crop plants and weeds must be known to determine proper chemical control methods
by A. S. Crafts, W. A. Harvey
Not available – first paragraph follows: Differential wetting is an important factor in the successful use of selective weed killers—chemical herbicides.
Breeding programs: Meaning and significance of heritability in improvement of strains through genetics
by Everett R. Dempster
Not available – first paragraph follows: Principles of the science of genetics are becoming of increasing importance with respect to breeding programs designed to improve measurable economic characters, such as egg production.
Dairy farm management: Production efficiency in California highest in nation but state is deficit in dairy products
by A. Shultis, G. E. Gordon
Not available – first paragraph follows: Production efficiency for California dairies is the highest for any state in the union.
Soybean meals as poultry feed: Soybean oil meals studied to determine effect of processing on nutritional value
by Dudley C. Ambrose
Not available – first paragraph follows: Soybean oil meal occupies an important place in the poultry industry.
Poultry meat: Los Angeles market price-making efficiency slowed by decentralization
by Kenneth D. Naden