Vol. 5, Issue 6 (2020)
Integrated management of root-knot and reniform, nematodes singly and concomitantly on linseed
Author(s): Suhail Anver
Abstract: The root-knot nematode, Meloidogyne incognita and the reniform nematode, Rotylenchulus reniformis caused significant reduction in plant growth of linseed (Linum usitatissimum L.). Consequently water absorption capability of roots was impaired. In concomitant infections the reduction in plant growth as well as in water absorption capability of roots was more pronounced. The reduction of plant growth in combined inoculations was, however, relatively less than the sum total of reductions caused by the same levels of the single species. Seed dressing with culture filtrate of Paecilomyces lilacinus resulted in a significant control of root-knot nematodes, Meloidogyne incognita and reniform nematode, Rotylenchulus reniformis singly or concomitantly, with a corresponding increase in plant growth, length and weight of plants and number of pods, chlorophyll content of leaves, water absorption capacity of roots of linseed. In another experiment soil application with oil cake of neem (Azadirachta indica) showed significant suppression of the nematodes, both singly as well as concomitantly, with the consequent improvement in different growth parameters of the plants as above. A combination of seed dressing treatment with culture filtrate of P. lilacinus and soil amendment with neem cake gave synergistic effect with respect to nematode management and improvement in plant growth parameters.