questions: asking about control of rodent, control of blast in rice. 
 answers: suggested to make a trap for rodent. to make the trap take banana (senichampa) and make some hokes in it and fill the holes with dry cement and place it in the corridor of the rodent. another trap can be make by soaking maize in urea solution for 1 hour and put the maize in the corridor of rodent.
spray streptomycin 2 time in 15 days interval mixing 1ml in 5 liters of water.