Vol. 12, Issue 6 (2023)

Author(s):
K Kranti KVVS, JA Patil, Saroj Yadav and P Supriya

Abstract:
Polyhouse cultivation of fruits, vegetables and flowers is an emerging production technology as it overcomes biotic and abiotic stresses and breaks the seasonal barrier for round-the-year production. The present investigation was undertaken to analyze the different parameters of community analysis of important plant parasitic nematodes associated with the vegetable crops viz., tomato, cucumber and capsicum in the districts located at NCR region of Delhi viz. Alwar and Sonipat. Plant parasitic nematodes viz., Meloidogyne incognita, Rotylenchulus reniformis, Pratylenchus spp., Hoplolaimus spp., Helicotylenchus spp., Tylenchorynchus spp. etc. was found to be associated with these crops. It has been observed that M. incognita population was found to be maximum in all the three crops at both the districts of NCR region. The prominence value was found to be maximum for root knot nematode in all the vegetable crops viz. tomato, capsicum and cucumber having 592.9, 223.4 and 910.6 J2 per 200 cc respectively. The data also revealed that M. incognita absolute frequency in tomato and tomato + capsicum mixed cropping was 100% and in cucumber was 92.9%. From these studies it can be interpreted that M. incognita is most predominant nematode and cause damage substantially to all the vegetable crops grown in polyhouse conditions and also responsible for reduction in the yield of vegetable crops in protected cultivation.