Calag Archive

To throw more light on the problem of potash fertilizer in. California citrus orchards, additional research was initiated a number of years ago.

The studies covered by this report were conducted by C. N. Chari and C. P. Natarajan, graduate students in the Division of Food Technology, under the direction of Dr. E. M. Mrak. The study of Calimyrna figs harvested under commercial conditions was made with the cooperation of the California Fig Institute.

The speed sprayer introduced in California in 1944 proved that a large volume of air at a relatively low velocity is more efficient and economical than water as a means of applying liquid sprays of fungicides and insecticides.

An efficient irrigation system depends upon adapting equipment and practices to the soil type and contour of the land being worked.

Avocado root rot occurs primarily on soils that tend to stay wet for varying periods, and is a disease with which the soil-inhabiting cinnamon fungus—Phytophthora cinnamoni—is usually associated.

Vineyard yields were increased by 10% at a cost of about $15 per acre in experimental fertilizer plots in 11 California counties where an average crop increase ranged from 9.4% to 14%.

Intensive investigations have been conducted in the field and in the laboratory since about 1930 regarding black-end or hard-end condition of pears and the relation of the rootstock to the incidence of the disease.

The following extract is from Experiment Station Bulletin 704, Ruby Cabernet and Emerald Riesling listed on page 16. Cuttings of Ruby Cabernet and Emerald Riesling are not offered for sale or distribution by the University of California, but may be purchased from nurserymen. I f you want to know where they may be obtained, write to the Division of Viticulture, California Agricultural Experiment Station, Davis, California.

Known by the code K-1875 the new chemical, bis (p-chlorophenoxy) methane, promises aid to the citrus grower in his fight to control the citrus red mite.

The virus of PE—avian pneumoencephalitis, pneumo or Newcastle disease—recently was isolated from the air of a poultry house containing an infected flock.

Infected sweet root orange trees can serve as carriers of the virus of quick decline even though they remain symptomless.