Absorption of Carbosulfan by Tuberose (Polianthes tuberosa L.) Bulbs and Its Effect on Hatching of Root Knot Nematode, Meloidogyne incognita in Bulbs

摘要

Emulsifiable concentrate of carbosulfan 25EC was evaluated as seed soaking for management of root-knot nematode, Meloidogyne incognita infecting bulbs of tuberose. Soaking of tuberose bulbs was done in 500,1000 and 2000 (mu g/ml of carbosulfan 25EC for 2 and 4 h of exposure. Absorption of carbosulfan by tuberose bulbs evaluated by high pressure liquid chromatography (HPLC) ranged from 5.25 mu g/ml to 35.44 mu g/ml. With the increase in the time of exposure or the concentration of nematicide there wascorresponding increase in incorporation of nematicide in the bulb tissues. Hatching from root-knot nematode, M. incognita eggs was reduced sig-nificantly by carbosulfan treatment at all the tested concentration (5—35 (mu g/ml).