Previous View
APSnet Home
Plant Disease Home



A Nematode Disease of Peanut Caused by Tylenchorhynchus brevilineatus. D. D. R. Reddy, Entomologist (Oilseeds), Andhra Pradesh Agricultural University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh. P. Subrahmanyam, Plant Pathologist (Groundnut), International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru P.O., Andhra Pradesh 502 324; and G. H. Sankara Reddy, Associate Director, C. Raja Reddy, Senior Scientist (Groundnut Breeding), and D. V. Siva Rao, Entomologist, National Agricultural Research Project (NARP), S.V. Agricultural College, Andhra Pradesh Agricultural University, Tirupati 517 502, Andhra Pradesh, India. Plant Dis. 68:526-529. Accepted for publication 26 January 1984. Copyright 1984 The American Phytopathological Society. DOI: 10.1094/PD-68-526.

A severe nematode disease of peanut (Arachis hypogaea) was first observed in 1976 in the Kalahasti area of Andhra Pradesh State, India. The disease was characterized by small, brownish yellow lesions on the pegs and pod stalks and on young, developing pods. The margins of the lesions were slightly elevated. Pod stalks were greatly reduced in length, and in advanced stages of the disease, the pod surface became completely discolored. The nematode Tylenchorhynchus brevilineatus was shown to be the causal agent. Soil treatment with carbofuran or aldicarb was effective in reducing the populations of T. brevilineatus and controlling the disease.