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Experiments on girdling olive trees were conducted during the 1949 season in orchards in Tulare, Madera, Solano, Butte, Glenn, and Tehama counties.

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.

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.

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.

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.

Differential wetting is an important factor in the successful use of selective weed killers—chemical herbicides.

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.

Production efficiency for California dairies is the highest for any state in the union.

Soybean oil meal occupies an important place in the poultry industry.