Cotton is more heavily treated with insecticides than any other crop in the United States. In southern Texas, this heavy treatment resulted in insecticide- resistant strains of major pests which almost destroyed the industry in the late 1960's and early 1970's. An integrated insect control program based on new short-season cotton varieties and traditional cultural practices has restored production in the area. The new system has been widely implemented because it produces greater net returns by reducing the use of insecticides, fertilizer, and irrigation.

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From 1946 to 1975, 166 monosomic plants of Gossypium hirsutum L. were placed in the monosome testing program at Beasley Laboratory. The 85 that have been identified have been deficient in one of the following chromosomes: 1, 2, 4, and 6 from the A subgenome; 16, 17, and 18 from the D subgenome. These monosomes came from irradiation treatments, translocations, tertiary monosomes, duplication‐deficiencies, cytological combinations, trisomics, other aneuploids desynaptics, other Gossypium species, cultivars, and breeding stocks.

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