Describes the results of a scientific study on the effect of summer weeds on crops (mainly sugar beets and tomatoes) and the use of the beet leafhopper to reduce their growth in the San Joaquin Valley in California.
Date: June 1943
Creator: Lawson, Francis R. (Francis Raymond), 1906- & Piemeisel, R. L.
Describes the damage that cabbage caterpillars can cause to plants, and provides the results of scientific research on insecticides to control the caterpillars in the southern United States.
Date: November 1941
Creator: Reid, W. J. (William John), 1902-; Smith, Charles Egan, 1887-; Reed, L. B. (Lucius Brown), 1906- & Thomas, W. A. (William Andrew), 1883-
Discusses the results of a study of the hibernation of the corn earworm in Chatham County, Georgia from 1930 to 1933. The study was conducted in an effort to understand seasonal occurences of earworm infestation.
Describes the results of scientific research of parasites of the Japanese beetle at various stages of the beetle life cycle. The studies were carried out from 1929 to 1933 in Japan, Chosen (Korea), India, and Taiwan.
Date: October 1940
Creator: Gardner, T. R. (Theodore Roosevelt), b. 1899. & Parker, L. B. (Lawrence Bemis), 1901-
Describes a series of scientific tests conducted over ten years to identify the strains of corn that were resistant to the threat of European corn borers, and provides the results of these tests.
Date: May 1942
Creator: Patch, L. H.; Holbert, J. R. & Everly, R. T.
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