Basic Aphid Control of Wheat

     In addition to directly harming wheat production, aphids are also vectors of wheat yellow dwarf disease, which occurs when the temperature rises after spring and the rain is suitable. Mainly concentrated in the stem, leaves and later spike harm and discharge honeydew, affect photosynthesis, aphids serious harm will make the leaves become yellow, even make the whole plant dead. The selection of appropriate low-toxicity and low-residue agents is beneficial to protect natural enemy resources and reduce the occurrence and harm of aphids in wheat fields. Generally, when the number of aphids in 100 plants reaches 1500, the benefit-to-harm ratio is 1: When the rate of aphid was above 80, or the rate of aphid was below 30%, 50% aphid mist wettable powder or 10% imidacloprid 10 grams per mu, or 5% high efficiency cypermethrin 2500 times liquid spray control.