But in reality. Hazardous substances of insect may have problems with the big picture more. At present, the farmer is the use of volume and concentration is relatively high. And may use the wrong way in cultivation.Farmers often use chemicals for sale of unknown origin produced because it is cheaper to buy, easy and relatively high insecticidal activity Thus, causing harm to health easier and more severe.
การแปล กรุณารอสักครู่..