How to cure dried bean leaves

Recently, some vegetable farmers have reported that some of their own beans will have dry leaf deformities. For this reason, the author conducted an investigation.

The authors found that these plots were more likely to be adjacent to the corn field, which was caused by the pesticide damage caused by spraying herbicides in the corn field. The drift of herbicide sprayed in the corn field is mainly affected by wind power. The greater the wind power is, the longer the drift is. Many vegetable farmers treat this kind of harm as a disease control, which not only fails to achieve the desired control effect, but also delays the timing of prevention and control.


After herbicide spraying in the corn field, the old leaves of the bean pods were dry and the vines were still green. With the growth of the beans, the new leaves appeared deformed, and the leaves were not flat. If the beans are in the pod stage, falling flowers appear. Poor growth of plants seriously affects yield.

Control methods

Rinse with clean water: The time period for spraying herbicides by farmers is generally 7 to 10 days. During this period, regular spraying of beans, stems and leaves is required to reduce the amount of pesticide residues on the bean stems and leaves.

Timely top dressing: topdressing with ammonium bicarbonate or urea, but also with some phosphorus and potassium fertilizers. The amount of fertilizer should be based on the severity of the injury and the growth of beans.

Enough watering: timely watering after topdressing to promote the effectiveness of fertilizer as soon as possible to play and reduce the relative concentration of harmful substances inside the beans. Foliar application of plant growth regulators and foliar fertilizers: a mixture of 7500 times liquid nitrogen and foliar fertilizer spray better. According to the degree of injury, spray once every 10 to 15 days, you can spray 1 to 3 times.

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