First, the symptoms of pesticide phytotoxicity
Leaves with different color and shape spots (spray spots are mostly small circles) or burnt perforations; leaves are chlorotic (such as the phytotoxicity of chlorhexidine on fruit trees, the phytotoxicity of trichlorobenzene herbicides on crops, etc.) Leaf yellowing (such as excessive use of secazine to make soybean leaves turn yellow); leaf burning (such as atrazine on wheat seedlings); leaf deformities (such as dur, cable twisted corn heart leaves into Whip, often referred to as the tail of the cow's tail); leaves fall off and so on.
Fruits appear (such as brown spots, spots, etc., Bordeaux mixture can produce rust on apples or pears), abnormal fruit, fruit drop and so on.
Flowers are mainly used before or during flowering, causing flowering, early withering or slickness (such as Bordeaux and oil emulsions, which can cause fruit trees to fall during flowering).
The root causes rotten roots or becomes thicker (such as the phytotoxicity of sodium pentachlorophenolate on rice roots, and the use of 2,4D herbicides in the jointing stage of rice will cause the base of the stem to enlarge); the root hair is sparse.
The main reason is that the germination rate is reduced (such as seed dressing and double-mixed wheat seeds, the dosage of more than 0.5% will reduce the germination rate of wheat seeds).
Second, remedies for remedies
1. Remediation of irrigation and drainage For the phytotoxicity caused by some herbicides, proper irrigation and drainage can also reduce the degree of phytotoxicity. For example, the phytotoxicity caused by agricultural profits can be alleviated by irrigation and drainage.
2, topdressing remedy Generally, the production of leaf phytotoxicity, plant yellowing and other symptoms of phytotoxicity, the application of fertilizer can reduce the degree of phytotoxicity.
3, spray water leaching if the spraying of some pesticides from the foliage and plants, and found early, you can quickly spray a large amount of water on the leaves of the crops, repeatedly spray water 2 to 3 times, try to Wash the drug on the surface of the plant and add phosphorus and potassium fertilizer to promote root development to enhance crop recovery.
4. Hormone Remediation For herbicides and plant growth regulators that inhibit or interfere with gibberellin, such as 2.4D butyl ester, dimethyltetrachloride, and hexalyze, gibberellin can be sprayed to alleviate the degree of phytotoxicity; Crops are tainted by pesticides such as omethoate, and 0.2% borax solution can be sprayed on the affected crops.
Leaves with different color and shape spots (spray spots are mostly small circles) or burnt perforations; leaves are chlorotic (such as the phytotoxicity of chlorhexidine on fruit trees, the phytotoxicity of trichlorobenzene herbicides on crops, etc.) Leaf yellowing (such as excessive use of secazine to make soybean leaves turn yellow); leaf burning (such as atrazine on wheat seedlings); leaf deformities (such as dur, cable twisted corn heart leaves into Whip, often referred to as the tail of the cow's tail); leaves fall off and so on.
Fruits appear (such as brown spots, spots, etc., Bordeaux mixture can produce rust on apples or pears), abnormal fruit, fruit drop and so on.
Flowers are mainly used before or during flowering, causing flowering, early withering or slickness (such as Bordeaux and oil emulsions, which can cause fruit trees to fall during flowering).
The root causes rotten roots or becomes thicker (such as the phytotoxicity of sodium pentachlorophenolate on rice roots, and the use of 2,4D herbicides in the jointing stage of rice will cause the base of the stem to enlarge); the root hair is sparse.
The main reason is that the germination rate is reduced (such as seed dressing and double-mixed wheat seeds, the dosage of more than 0.5% will reduce the germination rate of wheat seeds).
Second, remedies for remedies
1. Remediation of irrigation and drainage For the phytotoxicity caused by some herbicides, proper irrigation and drainage can also reduce the degree of phytotoxicity. For example, the phytotoxicity caused by agricultural profits can be alleviated by irrigation and drainage.
2, topdressing remedy Generally, the production of leaf phytotoxicity, plant yellowing and other symptoms of phytotoxicity, the application of fertilizer can reduce the degree of phytotoxicity.
3, spray water leaching if the spraying of some pesticides from the foliage and plants, and found early, you can quickly spray a large amount of water on the leaves of the crops, repeatedly spray water 2 to 3 times, try to Wash the drug on the surface of the plant and add phosphorus and potassium fertilizer to promote root development to enhance crop recovery.
4. Hormone Remediation For herbicides and plant growth regulators that inhibit or interfere with gibberellin, such as 2.4D butyl ester, dimethyltetrachloride, and hexalyze, gibberellin can be sprayed to alleviate the degree of phytotoxicity; Crops are tainted by pesticides such as omethoate, and 0.2% borax solution can be sprayed on the affected crops.
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