Symptoms and Control methods of Drug injury in Rice

In the process of rice planting, it is inseparable from the use of pesticides, but if pesticides are not used properly, it will cause drug damage, cause poor growth of rice, and in serious cases, it will lead to the death of rice and no harvest, resulting in huge losses to farmers. So what are the symptoms of drug damage to rice? How to prevent and cure it? Let's take a look.

1. Symptoms of drug damage

Once the drug damage of rice is divided into acute and chronic, acute will generally appear spots, burns, wilt, deformity and other symptoms after 2 days of spraying, while chronic development is slow, generally manifested as slow growth, reduced tillers and delayed fruiting, resulting in a decrease in yield. Among these symptoms, the wilt symptoms are mainly caused by herbicides; growth deformities often occur in the stems, leaves and roots of rice, such as curled leaves, clumps, root swelling, etc.; the common spots are brown spot, macula, etc. Growth stagnation refers to the inhibition of the normal growth of rice and the phenomenon of slow growth.

2. Causes of drug damage

First, improper mixed use of pesticides, resulting in excessive concentration of pesticides, which is extremely prone to drug damage in the period of high temperature; second, failure to spray pesticides in accordance with the regulations, which is relatively common; third, drug damage caused by misuse of pesticides, for example, if some farmers eat herbicides as pesticides, the phenomenon of green wilt will occur the second day after spraying, resulting in brown and death at the base of the stem. Fourth, it is caused by pollution. After using pesticides, many pesticides are not disposed of in accordance with the regulations, reducing random throwing and dumping, as Rain Water scours them into the seedling field, resulting in drug damage to seedlings; caused by improper eating operation, many farmers spray herbicides directly on rice, causing drug damage.

3. Prevention and control methods

When receiving drug damage, it should be remedied according to different symptoms. If there are symptoms of drug spots, scorch or plant yellowing, it should be kept in shallow water in the field, and fertilizer should be applied to supplement the necessary nutrition of rice to make it back to normal. If the herbicide is mistakenly sprayed, then immediately spray water, and repeatedly change water, reduce pesticide spots, and then apply a small amount of organic fertilizer to promote its return to normal. If it is the drug damage caused by 2 or 4 Mel D, gibberellin or natural brassine should be sprayed in time to alleviate the drug damage.

The above is the introduction of rice drug damage symptoms and control methods, hope to help you, want to know more related knowledge, please pay attention to us.