questions: query about pest problem. 
 answers: spray chlorpyriphos 20 ec 2-3 ml/litre of water or fipronil 5 sc @ 2 ml/litre of water or carbaryl @ 3 gm/litre of water,3 times at 5 days interval.
apply paddy special @ 2 gm or 2 ml per litre of water, 2 times at 15 days interval.