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Disease Note

Heterodera glycines on Soybeans in Colombia. D. C. Norton, Department of Plant Pathology, Seed and Weed Sciences, Iowa State University, Ames 50011. A. Morgan Golden, USDA-ARS, Nematology Laboratory, Beltsville, MD 20705, and F. Varon de Agudelo, Instituto Colombiano Agropecuario, Apartado Aereo 233, Palmira, Colombia. Plant Dis. 67:1389. Accepted for publication 17 August 1983. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-1389.

White and yellow stages of a cyst nematode were found on stunted soybeans (Glycine max (L.) Merr.) in a 20-ha field at El Molino, Palmira, Valle del Cauca, Colombia, on 4 May 1983. Brown cysts were found in an adjacent maize field that had been planted to soybeans in 1982. Preserved cysts were sent to the USDA Nematology Laboratory, Beltsville, MD, where the nematode was identified as Heterodera glycines Ichinohe. Cysts have been deposited in the USDA Nematode Collection at Beltsville. As far as we know, this is the only confirmed report of this nematode in South America.