Plant parasitic nematodes associated with groundnut in Andhra Pradesh.

Twenty-eight genera of nematodes were recorded from the rhizodphere of groundnut in Chittoor and Nellore districts of Andhra Pradesh durirlg kharif and rabi 1987–88. In general, the occurrence and density of various nematode genera were higher in rabi than in kharif season. Bitylenchus brevilineatus, Pratylenchus spp, Basirolaimus spp. and Tylenchorhynchus spp. were the most predominant nematodes with high frequency, density as well as prominence values in both thc seasons. Basiria spp., Ecphyadophora spp., Nothotylenchus spp., Sakia spp. and Tenunemellus sp. were new records of association with groundnut. Heterodera sp. Meloidogyne sp. and Rotylenchulus reniformis were considered to be economically important.