Effect of Calcium Silicate and Need Based Nitrogen on Pests Management in Aerobic Rice (Oryza sativa L.)

The dynamic and severity of pests attack has shifted with the adaptation and spread in rice. Excessive use of chemicals for pest and diseases control in agriculture is known to degrade the environment. Use of silicon (Si) and nitrogen (N) management in aerobic rice involves a proper choice and blend of compatible tactics to keep the pests at low level. The present investigations were done to know the effect of calcium silicate and nitrogen on the pest infestation in aerobic rice. The results revealed a significant decreases of pests i.e. Leaf folder (Cnophalocrosis medinalis), Brown plant hopper (Nilaparvata lugens), White backed plant hopper (Sogatella turcifera), Green leaf hopper (Nephotetticx virescens) with the application of calcium silicate at 2 t ha^-1 and 90 kg N ha^-1 (30 kg N ha^-1 as basal+ LCC-3) and par with 60 kg N ha^-1 (No basal + LCC- 3). This study suggested the importance of Si and LCC based N application for achieving to keep the pests population and higher grain yield and straw yield.