Effect of subuphos on soil nematodes following furrow application in cowpea, okra, pea, sorsean and tomato

Sebuphos was amply effective against both ecto and endoparasitic nematodes following furrow application @ 1.0 kg a.i./ha in three cropping seasons with cowpea, Vigna unguiculata (L.), pea, Pisum sativum (L.), okra, Abelmoschus esculentum, soybean, Glycine max (L.) and tomato, Lycopersecon esculentum (L.) as ensuing crops. Within a week, the nematicidal application in cowpea, okra, soybean and tomato plots knocked down considerable population (50–60%) of plant parasitic nematodes in soil. Maximum reduction was observed by about one month. Although nematode population started increasing from 15th day onwards, the final population of endoparasites as recorded on 90th day was low by 43 to 57%. Infact, the pouplation level remained always supressed in treated plots compared to untreated ones. The ratio of final population to initial population of nematodes was greately reduced in all the three cropping seasons in the treated plots. The nematicidal application dso reduced root infection in the plant species tested.