Propiconazole Use in the seedling stage is easy to reduce the seedling rate, seedling rigidity, inhibit growth, burn young fruit, try to use it in the middle and late crops; it is sensitive to melons, grapes, strawberries, tobacco and other crops. Pentachloronitrobenzene Pentachloronitrobenzene is prone to phytotoxicity when it comes in contact with the sprouts of crops Chlorothalonil The high concentration of chlorothalonil is prone to phytotoxicity to pear trees, persimmons, peaches and plums. The apple cannot be used within 20 days after the flower has fallen. Hymexazol Can not be mixed with strong acid medicaments, 100 times liquid has slight phytotoxicity to wheat.
Kasugamycin It has slight phytotoxicity to soybeans and lotus roots, and it cannot be used in neighboring soybeans and lotus roots.
Engine oil emulsion
Spray oil emulsion 150 times + 40% hydrocarbophos 1200-1500 times during the germination and florescence period, causing phytotoxicity;
organophosphorus pesticides should not be used within 1 week after spraying loose alkali mixture, and lime-sulfur mixture should not be sprayed within 20 days
copper chloride
The young leaves of crops such as apples, grapes, soybeans, and lotus roots are sensitive to the drug and will appear slightly curled and brown spots.
Bordeaux mixture
Cabbage, peach, and plum are sensitive to them during the growth period, and no matter what the formula is, they are prone to phytotoxicity. In spring, it can
prevent citrus scab disease. The temperature exceeds 30℃ and the bud length exceeds 1cm. Spraying 0.8% equivalent Bordeaux mixture will produce For
severe bud burning, it is safer to spray 0.5% double-volume Bordeaux liquid; pears are sensitive to copper ions, use double-volume Bordeaux liquid; grapes
are sensitive to lime, use lime half-volume Bordeaux liquid, such as the high temperature period around noon in summer , Overcast and rainy days, wet fog
in the morning, and strong wind spraying are all likely to cause phytotoxicity。
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Post time: Aug-16-2021