Calag Archive

High weather temperatures at certain seasons may turn profitable livestock enterprises into losses, even though feed and labor are plentiful.

Production of beans on the rice lands of the Sutter Basin–as part of a crop rotation program–presents a difficult irrigation problem.

The clover case bearer–Coleophora spissicornis Haworth–mainly associated with white clover–Trifolium repens–but also reported to attack red clover–T. pratense and T. arvense– seems to be established as a pest of Ladino clover seed in the Sacramento Valley.

Tests of wind machines made in January and February, 1954, at the University of California Citrus Experiment Station, Riverside, confirmed and extended previous tests of multiple machines.

The Valencia fruit size problem has interrelationships of various factors, and to learn how certain ones operate–when as many as possible of the usual complicating factors are removed–a series of experiments were set up using pure silica sand and nutrient solution. This type of experimental approach makes it possible to synthesize some of the actual orchard nutritional conditions in certain areas where large sizes of fruit often predominate.

An outbreak of the codling moth on walnuts in 1953–the most destructive infestation since 1948–was successfully controlled with a single treatment in the experimental orchard at Linden, whether the sprays were applied with a conventional or with an air carrier sprayer.

Two small colonies of Aphytis “C,” a wasp parasite of the fig scale–Lepido-saphes ficus (Signoret)–released in the San Joaquin Valley, one at Merced and the other near Fresno, demonstrated what is almost an axiom in biological control work: if a parasite is destined to succeed, it will take hold immediately after an adequate release on susceptible hosts.

Lettuce–like most leafy vegetables– deteriorates rapidly and steadily after harvest. Loss of quality is inevitable and can only be minimized by rapid handling and with the best possible storage conditions.