Detection of Heterodera glycines on Soybean in Brazil. Maria L. Mendes, Nematologist, EMBRAPA/CNPSo, Cx. P. 1061, 86.001 Londrina, PR., Brazil. D. W. Dickson, Professor, Entomology and Nematology Department, PO Box 110620, University of Florida, Gainesville 32611-0620. Plant Dis. 77:499-500. Accepted for publication 13 January 1993. Copyright 1993 The American Phytopathological Society. DOI: 10.1094/PD-77-0499.

The soybean cyst nematode (Heterodera glycines) was detected and identified on soybean (Glycine max) during a survey made in 65 soybean fields on 52 farms in six states in central Brazil during March–June 1992. The infested sites were located near the municipalities of Iraí de Minas and Nova Ponte, Minas Gerais; Chapadão do Céu and Aporé, Goiás; Chapadão do Sul, Mato Grosso do Sul; and Campo Verde, Mato Grosso. The large geographic region represented by these infested sites likely means that H. glycines is widely established in Brazil. On the basis of the severity of plant stunting and the number of cysts extracted from soil collected at each site, it is estimated that H. glycines has been present on soybean in Brazil for an extended period.