Latest tutorial on prevention and control techniques for herbicide damage in yardlong beans

If yardlong beans are not managed properly during cultivation and there are many weeds, then herbicides must be sprayed to control the weeds. However, if the operation is improper during spraying and the herbicide is sprayed onto the leaves and plants, it will cause herbicide damage to the yardlong beans. In mild cases, the leaves dry up; in severe cases, the plants die. So how should herbicide damage in yardlong beans be prevented and controlled? Let us learn about it together.

1. Symptoms

After accidental spraying of herbicide, the old leaves of the yardlong beans first begin to dry up, while the stems and vines remain green. However, as the yardlong beans grow, the new leaves will show deformity, with the leaves wrinkled and uneven. If the yardlong beans are in the pod-setting stage at this time, flower drop and pod drop may also occur, causing poor plant growth and seriously affecting yield. In severe cases, it can also lead to premature aging of the plants.

2. Prevention and control methods

1. Washing with clean water

Generally, the period for spraying herbicide is about one week. During this period, water should be sprayed frequently on the stems and leaves of the yardlong beans to dilute or wash away the herbicide residue remaining on the stems and leaves, thereby reducing the herbicide damage.

2. Timely topdressing

After herbicide damage occurs, topdressing can be carried out in time, which can alleviate the herbicide damage. Topdressing is generally mainly ammonium bicarbonate or urea, and some phosphorus and potassium fertilizers can also be appropriately added. However, the amount of topdressing should also be noted, and it should be based on the degree of herbicide damage and the growth condition of the yardlong beans, so as to avoid excessive topdressing, which would affect the normal growth of the yardlong beans and also lead to reduced yield.

After topdressing, water should be applied in time. This can speed up the volatilization of the fertilizer and its absorption by the plants, lower the concentration of harmful substances in the yardlong beans, and reduce the herbicide damage.

4. Foliar fertilization

After herbicide damage occurs, by using the method of foliar fertilization, plant growth regulators and foliar fertilizers are sprayed on the yardlong beans, which can effectively reduce the herbicide damage. The best effect is achieved by mixing and spraying brassin at a 7500-fold dilution with foliar fertilizer. Generally, according to the degree of herbicide damage, spray once every ten days to half a month, for 2-3 consecutive times, and the herbicide damage can be eliminated.

The above is an introduction to prevention and control techniques for herbicide damage in yardlong beans. We hope it can help you. If you want to learn more related knowledge, please keep following us.