Strains of the Verticillium wilt fungus in California cotton
California Agriculture 21(3):4-5.
Published March 01, 1967
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Cotton yields have progressively decreased in many fields in Tulare and Kings counties in the San Joaquin Valley since 1960. Losses have been attributed to new races of Verticillium albo-atrum, potassium deficiency, and a change in tolerance to Verticillium wilt in the Acala 4-42 variety (grown exclusively in the San Joaquin Valley since 1954 because of its wilt-resistance).