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Assessment of Cotton Losses in Western Texas Caused by Meloidogyne incognita. C. C. Orr, Nematologist, USDA, ARS, Route 3, Lubbock, TX 79401. A. F. Robinson, Nematologist, USDA, ARS, Weslaco, TX 78596. Plant Dis. 68:284-285. Accepted for publication 19 September 1983. This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1984. DOI: 10.1094/PD-68-284.

Cotton yields increased an average of 25.7% in 80 field trials conducted over 16 yr in six counties of western Texas, where a soil fumigant was applied to control the cotton root-knot nematode. An analysis of 2,016 soil samples from fields in the six counties showed that 47.3% contained a population of root-knot nematodes. Annual cotton production in these counties was 839,800 bales (8-yr avg.). The calculated loss in the six counties was 85,600 bales.