Influence of Agrochemicals and Botanicals on the Mortality of Entomopathogenic Nematodes (Meghalaya isolates)

The effect of agro chemicals (Monocrotophos, Topcin M, Glyphosate, Dicofol 18.5 E and Oxamyl @ 0.1% concentration) and botanicals (pine seed, pine needle, plant parts of Tithonia spp., plant parts of marigold at 1% concentration) on the mortality of Steinernema carpocapsae and Heterorhabditis indica (Meghalaya isolates) were assessed under laboratory conditions. The results indicated that the infective juveniles of both the genera tolerated Dicofol 18.5 E and Monocrotophos upto 24 h of exposure. Flower, leaf and stem extracts of Tithonia spp and dry leaf extracts of marigold was found to be safe up to 24 h of exposure for both of the nematode isolate. The mortality per cent increased with increased time. Results indicating that there are good possibilities for their use in integrated pest management programme.