Khun Tum, I have a friend whose uncle and cousin have padi farms of 10 rai and 15 rai each in mainland Penang and Kedah. They are currently using 2 types of mixed chemical fertilizers subsidize by the government. Quantity used per application is 50kg. Output yield is 2 to 2 1/2 tons per relong. Relong is the local malaysian acreage measurement and 1 acre is equal to 1 1/2 relong. Usage of pesticide is dependent on types of weeds that crop up. I am planning to visit one of the farms in the next 2 days. Please advise, thanks.