Prevention and control techniques of drug damage caused by beans

If beans are not properly managed and there are many weeds, it is necessary to spray herbicides to control weeds, but if you do not operate properly during spraying, spraying herbicides on leaves and plants will cause drug damage to beans. If it is light, the leaves will dry up, and if it is heavy, it will lead to plant death, so how to prevent and control the drug damage caused by beans? Let's get to know it.

First, symptoms

After accidentally spraying herbicides, at first, the old leaves of the beans began to dry up, and the stems were still green, but with the growth of the beans, the new leaves were deformed and the leaves wrinkled and uneven. If the bean is in the podding stage, the phenomenon of falling flowers and pods may occur, resulting in poor plant growth, seriously affecting the yield and, in serious cases, premature senescence of the plant.

II. Prevention and control methods

1. Clean water

The period of spraying herbicides is generally about a week. During this period, the stems and leaves of beans should be often sprayed with water to dilute or wash the residue on the stems and leaves of beans to reduce the drug damage.

2. Topdressing in time

After the occurrence of drug damage, can be timely topdressing, can alleviate drug damage, topdressing is generally ammonium bicarbonate or urea-based, can also be properly matched with some phosphorus and potassium fertilizer, but the number of topdressing should also be paid attention to, according to the degree of drug damage and the growth status of beans, so as to avoid too much topdressing, affecting the normal growth of beans, will also lead to a reduction in production.

3. Pour enough water

Watering in time after topdressing can speed up the volatilization of fertilizer and be absorbed by plants as soon as possible, reduce the concentration of harmful substances in beans and reduce drug damage.

4. Foliar fertilizer spraying

After the occurrence of drug damage, plant growth regulators and foliar fertilizer were sprayed on beans to reduce the drug damage. The mixed spraying effect of brassine 7500 times liquid combined with foliar fertilizer was the best, generally according to the degree of drug injury. spray once every ten days and a half month, can be continuous 2-3 times, can relieve the drug damage.

The above is the introduction of the prevention and control technology of drug damage in beans. I hope it can help you. If you want to know more about it, please pay attention to us.