Efficacy of nematicides applied at different times in bidi tobacco nursery for management of nematodes

Plant Parasitic nematodes (Meloidogyne incognita, M. javanica, Tylenchorhynchus vulgaris, Rotylenchulus reniformis) are great menace in successful raising of bidi tobacco nursey. An experiment was conducted to determine the most appropriate time of nematicidal application for protecting the germinating seeds as well as early growth of bidi tobacco seedlings from nematode attack. Pooled results revealed that between phenamiphos @ 5 kglha and carbofuran @ 3 kglha, phenamiphos was effective in the management of nematodes. Its application ten days prior to seeding (10DPS), at seeding, ten days after seeding (10DAS), 10DPS+10DAS, at seeding+10DAS has identical effect with regard to root-knot disease and bidi tobacco transplants. Phenamiphos was at par with soil solarization, which was the most effective treatment. Carbofuran was ineffective.