Calag Archive

A Condensation of a report prepared by S. V. Wantrup at the request of the Council of State Governments, and published in the journal, STATE GOVERNMENT.

The generally accepted explanation of hybrid vigor or heterosis in dairy cattle is based on the fact that most of the desirable hereditary factors tend to be dominant, while those less desirable are often recessive or hidden.

Grape crops from 1942 to 1945 were the largest in the history of California grape production. With emphasis solely on quantity, quality suffered.

Citrus thrips are found in all citrus-growing areas of California but are a serious pest only in the inland valleys.

Attempts to develop an improved vaccine for pneumoencephalitis—known in all states except California as Newcastle disease—focused on studies of the effect which the addition of certain substances to the present vaccine might have on its immunizing property.

Probably more time and effort have been devoted to a study of the pear in California, than of any other deciduous tree fruit.

Once thought worthless, second growth redwood suddenly demonstrated value and there are now more than a dozen small mills cutting such growth solely.

Widespread interest in Sweet Sudan has been aroused among California growers of Sudan grass. This variety was developed by Dr. B. E. Karper and Dr. J. B. Quinby of the Texas Agricultural Experiment Station from a cross between Leoti, a sweet sorghum, and Common Sudan grass followed by backcrosses to Sudan.

Within the past fifteen or more years considerable evidence has been obtained which definitely places ly-gus bugs as one of the more important factors affecting the yield of alfalfa seed.

To insure the adequate pollination of plants that are benefitted by insect pollination, colonies of honeybees should be located in or near orchards or fields at the rate of one or more strong colonies per acre.