Calag Archive

The experiments reported in this article were conducted co-operatively by the University of California Agricultural Experiment Station and the United States Department of Agriculture, Bureau of Plant Industry, Soils and Agricultural Engineering

Nitrogen fertilization increased cotton yield in a series of experiments designed to determine the kind of fertilizer and—specifically—the amount of nitrogen necessary for maximum production on soils of the San Joaquín Valley.

A good underleaf spray coverage with contact acaricide achieved good control of spider mites on cotton in tests in the San Joaquín Valley.

Seed treatment with lindane has proved to be an effective, economical and relatively safe method for the control of wireworms and the seed-corn maggot affecting germinating seeds of a number of vegetable and field crops.

A small gregarious wasp—Apanteles, sp. “A”—and a tachinid fly—Sturmia harrisinae Coq.—which are natural enemies of the western grape leaf skeletonizer—Harrisina brillians B. & McD.— are firmly established in San Diego County.

Results of a study during the 1952 season—with 103 vineyards, representing 3,333 acres, co-operating—show it pays to thin Tokay grapes.

Over 40% of the sun's heat can enter uninsulated houses through the roof but as a shadow—from overhead foliage or cover—moves over an area, the speed of cooling makes the newly shaded area immediately useful.

Boric acid sprays can control the occurrence of cracked stem in certain varieties of celery which follows excessive applications of nitrogen and potash fertilizers—or potash alone, when the soil fertility is optimal.

Nearly one half of the housewives— 47.5%—of the approximately one thousand interviewed in nine grocery stores in Berkeley in the summer of 1952 made a practice of buying fresh spinach at least once a month.

Production of marketable squabs increased after certain vitamins—important for reproduction by fowl—were added to a basal ration similar to commercial pigeon feed mixtures.

No off-flavors were imparted to milk through feeding trials with a condensed beet solubles product—MC-47.