Abstract
Protected cultivation of horticultural crops under controlled environmental conditions has gained popularity among farmers due to high productivity, better quality of produce and manifold increase in yield per unit area. A survey was conducted in various vegetable crops (capsicum, bottlegourd, spongegourd and tomato) grown in the protected conditions in Delhi/NCR region. Six soil and root samples from these vegetable crops were collected from polyhouses located in Faridabad and Gurgaon, Districts of Haryana. The extraction of nematodes was done by Cobb sieving and Decanting Technique. Soil samples of spongegourd from Palrada locality of Faridabad had the highest population (850 J2/200 cm3 soil) of root-knot nematode (RKN) Meloidogyne incognita. Similarly, in capsicum, bottlegourd and tomato crops from Banwari locality of Gurgaon, maximum RKN population (129 J2/200 cm3 soil) was recorded. Community analysis besides RKN, revealed other ectoparasitic nematodes viz. Tylenchorhynchus spp., Pratylenchus spp., Hoplolaimus spp. and semi-endoparasitic nematode Rotylenchulus reniformis. Out of these nematodes the highest frequency of occurrence was recorded in M. incognita (100), Tylenchorhynchus spp. (100), R. reniformis (86.7) on cucurbits and Meloidogyne and Xiphinema spp. has 50.0 in capsicum.
Published Version
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