All Issues

Control of Lygus bugs on seed alfalfa

November 1952
Volume 6, Number 11

Research articles

Lygus bugs on seed alfalfa: Specific treatments recommended for lygus bug control in alfalfa seed fields at three stages of plant growth

by L. D. Anderson, L. G. Jones, H. T. Reynolds, R. F. Smith, E. J. Swift

Abstract

Successful control of lygus bugs on alfalfa requires properly timed applications of insecticide.

Exocortis disease of citrus: Top-root relationships of trifoliate orange and its hybrids studied in search for cause of root disease

by W. P. Bitters

Abstract

The citrus root disease called exocortis is present in most areas where trifoliate orange—Poncirus trifoliate,—is used as a rootstock.

Washington navel fruit drop: Effects of 2,4-D on drop of sound and unsound oranges when sprays were applied in the late fall and winter

by Louis C. Erickson

Abstract

Sound Washington Navel orange fruit was the only type in which drop was consistently reduced by a highly significant amount—1 % level of probability—in studies in orchards near Pomona and Redlands.

Phosphatic fertilizers on valencias: Field response in phosphorus-deficient orchard reveals improvements in foliage growth and color, and in fruit quality

by T. W. Embletson, J. D. Kirkpatrick, E. R. Parker

Abstract

Phosphatic fertilizers applied to Vaencia orange trees improved foliage growth and color, the fruit quality and increased the number of fruits set.

Biological control of insects: California's subtropical climate favors establishment of natural enemies of agricultural insect pests

by C. P. Clausen

Abstract

One third of the 100 or so insects introduced successfully into the continental United States for biological control, are established in California.

Efficiency in fruit marketing: In-plant transportation equipment for fresh fruit packing houses compared for seasonal cost and efficiency

by L. L. Sammet

Abstract

Part VI of a series of reports of studies on the effects of packinghouse equipment, plant layout, and work methods on efficiency and costs. These studies have been made co-operatively by the University of California Giannini Foundation of Agricultural Economics, and the Bureau of Agricultural Economics, United States Department of Agriculture, under the authority of the Research and Marketing Act.

Dairy products in food expense: Surveys made in Oakland and in Los Angeles indicate share of dairy products in the family food expense

by Jessie V. Coles

Abstract

The second of a series of reports of a survey on the consumption of dairy products in urban areas of California made co-operatively by the Department of Home Economics, University of California, California State Department of Agriculture, and United States Department of Agriculture under the authority of the Research and Marketing Act.