Population dynamics of Heterodera cajani associated with pigeonpea in various cropping systems of central Uttar Pradesh

Heterodera cajani is an important nematode problem of pigeonpea in Central Uttar Pradesh. Cropping sequence and fallow of fields influenced the nematode population. Cropping sequence of wheat-fallow-pigeonpea/sorghum was more effective than other existing ones for reducing nematode population. For intercropping of pigeonpea with non-host crop, sorghum was most effective in reducing the nematode population and increasing the yield of pigeonpea upto 40.4 per cent.