Remedy in case of phytotoxicity in vegetables

The use of pesticides is an indispensable part of the agricultural production process, but if used improperly, it is easy to cause phytotoxicity.

1. Strengthen management. In the case of phytotoxicity in the seedbed, the seedlings can be used to reduce the phytotoxicity. In the field where the seed is damaged or the seedlings are less damaged, the management of fertilizer and water should be strengthened, nitrogen fertilizer should be supplemented appropriately, and early seedling growth should be promoted. In the middle and late stages of plant growth, it is necessary to timely cultivate the loose soil or artificial soil, increase the application of phosphorus and potassium fertilizer, promote root development, and improve the recovery ability of the crop itself. Fields where seeds or seedlings are seriously damaged should be replanted or transplanted in time.

2. Rinse with water. Generally, for the phytotoxicity caused by spraying pesticides on the foliage and plants, if found in time, the affected parts can be quickly sprayed with a large amount of clean water. This method has a better effect on alleviating the phytotoxicity caused by pesticides with poor systemic absorption, and the mitigation effect of phytotoxicity caused by pesticides with stronger internal absorption is poor.

3. Fertilization remedy. For the phytotoxicity caused by spraying pesticides, it is found that after washing with water, it can be sprayed with 0.1% potassium permanganate. The oxidation of potassium permanganate causes some drugs to be decomposed in order to minimize the phytotoxicity. And cultivating loose soil to promote root development and enhance crop recovery. In the future, the leaves should be sprayed with nucleotides to protect the leaves. The concentration of the product is 0.05%, and the product can be mixed with 6000 times of sodium nitrophenolate in order to improve the effect, which is beneficial to the recovery of vegetable damage and can reduce the recovery time.

If the organic phosphorus, pyrethroids, carbamates and other pesticides caused by alkaline decomposition and failure are used due to misuse or excessive use, alkaline fertilizer solutions such as ammonium bicarbonate may be sprayed, and certain detoxification may occur. The effect is also the effect of external fertilization to promote plant growth and development.

For the phytotoxicity of foliar plaque, leaf edge scorch or plant yellowing, cytokinin can be sprayed to prevent the leaves from continuing to yellow. It can also be used together with nucleotides. The use of cytokinins can avoid excessive decomposition of chlorophyll and restore leaf vigor.

The phytotoxicity caused by the aerosol can be remedied by spraying 6000 times of sodium nitrophenolate or alizarin lactone after timely release.

4. Drainage and remediation. For some phytotoxicity caused by herbicides, proper irrigation and drainage can also reduce the degree of phytotoxicity.

5. Hormone remediation. For herbicides and plant growth regulators that inhibit or interfere with gibberellin, such as 2.4-butyl butyrate, dimethyltetrachloride, ethephon, etc., hormonal plants such as gibberellin and alizarin lactone may be sprayed. Growth regulators alleviate the degree of phytotoxicity. For the inhibition growth caused by triazole drugs, gibberellin can be used in an amount of 30 to 50 mg per kilogram, which promotes the growth of the drug and alleviates the inhibitory effect of the drug. In order to improve the recovery rate of phytotoxicity, in addition to the use of nucleotides, sodium nitrophenolate, chitin can also be mixed, 80% of the products can be used 600 times, can promote recovery, and can reduce secondary diseases.

6. Removal of severely toxic substances is effective in relieving the phytotoxicity of systemic drugs. After the systemic drug is absorbed by the vegetable, it can be slowly expanded to prevent the disease from occurring.

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