Influence of some of the commonly used organic and inorganic sources of manures and fertilizers on rice root nematode, Hirschmanniella oryzae was studied under field conditions. Application of fresh leaves of Azadirachta indica, Sesbania aculeata, water hyacinth or water hyacinth compost at the rate of 60 kg Nlha were found useful for managing this nematode and increasing grain yields. However, the leaves of A. indica or S. aculeata when applied to the soil at the rate of 10 kg Nlha in combination with inorganic fertilizers had no effect on the nematode population.
Hirschmanniella oryzae, rice, fertilizers, organic and inorganic manures
