Management of nematodes through chemicals in bidi tobacco nursery

An experiment was carried out for management of nematodes through chemicals in bidi tobacco nursery for four years. Eight treatments viz., drenching of carbosulfan (Marshal 25EC) @ 2.5 1/113 one day prior to seeding (DPS) + 25 days after seeding (DAS), carbosulfan @ 5 l/ha (drenching), isoazophos (Miral 3G), carbofuran (Furadan 3G), sebuphos (Rugby lOG) each @ 5 kg/ha as broadcasting i DPS, dazomet (Basamid G) @ 294 kg/ha 20 DPS, soil solarazation for 15 days during April-May using clear LLDPE ¬film of 25 IJID thickness and control were tried. Pooled results revealed that drenching of carbosulfan @ 2.5 l/ha DPS + 25 DAS and soil solarazation significantly reduced root-knot disease and increased number of transplants of bidi tobacco as compared to control. Economics worked out for carbosulfan revealed an ICBR 1:5.50 and net realization of Rs. 2,07,728/- per ha as against ICBR 1:3.23 and net realization of Rs. 2,05,106/- per ha in case of soil solarization, a recommended treatment. Thus, carbosulfan @ 2.5 l/ha DPS + 25 DAS could be recommended to the farmers.