Population dynamics of plant parasitic nematodes in different cropping sequences under wetland system
Abstract
The population dynamics of the four plant parasitic nematodes viz., Hirschmanniella gracilis, Hoplolaimus seinhorsti, Scutellonema sp. and Helicotylenchus dihystera was studied in different paddy- based cropping sequences. Population of plant parasitic nematodes increased in paddy- paddy cropping sequence compared to other cropping sequences. Paddy - fallow cropping sequence reduced the nematode populations. The nematode populations were maintained during paddy-blackgram and paddy greengram cropping sequences. Rainfall, number of rainy days and relative humidity had no profound influence on nematode populations.
Keywords
Plant parasitic nematodes, population dynamics, wetland cropping sequences, temperature, rainfall, relative humidity
