Bio-Management of Root-Knot Nematode, Meloidogyne incognita on Tea

Abstract

Studies on bio-management of root-knot nematode Meloidogyne incognita on tea under pot condition showed that all the treatments with Glomus fasciculatum, Trichoderma harzianum, Trichoderma viride, neem cake and carbofuran 3G alone or in combination significantly increased plant growth parameters of tea and decreased number of galls, eggmasses and final nematode population in soil over control. The maximum increase in plant growth parameters viz., shoot length, root length, fresh and dry weight of shoot and root were recorded in the treatment with Glomus fasciculatum @ 300 spores/kg of soil + Trichoderma harzianum @ 4 gm/kg of soil + neem cake @15 gm/kg of soil. While, the maximum reduction of number of galls and egg masses and final nematode population in soil were recorded in the treatment with carbofuran 3G @ 3 g/kg of soil followed by the treatment with Glomus fasciculatum @ 300 spores/kg of soil + Trichoderma harzianum @ 4 gm/kg of soil + neem cake @15 gm/kg of soil. The treatment with Glomus fasciculatum @ 300 spores/kg of soil + Trichoderma harzianum @ 4 gm/kg of soil + neem cake @15 gm/kg of soil was found to be best in increasing plant growth parameters of tea and in decreasing number of galls, eggsmasses and final nematode population in soil over control.