Fluazinam：High temperature can not be used, otherwise it is very easy to appear drug harm. The control effect on downy mildew is moderate. Do not mix with cream, because the permeability is very good, and cream mixed, there will be leaf deformity, shrinkage. Sensitive to melon, easy to produce drug harm. Try not to use leafy vegetables.
Pyrimethanil：Pyrimethanil is very sensitive to temperature and is particularly susceptible to toxicity above 25℃. After treatment, eggplant leaves appeared black brown spots. Chlorosis spots appeared in cucumber after treatment. Severe leaf burning and bleaching. Beat the bean leaves dry as if sprayed with herbicide. Tomatoes may have yellowing margins. Don’t even think about cherries. Spray once, dry for three years.
Chlorpyrifos:Not to mention the effect of this medicine against other insects, this medicine against starscream is unparalleled. However, if this drug once high temperature, and the drug concentration is too high, it is easy to damage the leaf, cause leaf yellowing and premature aging. So pay attention to temperature, concentration and spraying time. Rational use of drugs, will play in starscream magic general effect.
Cupric-Amminium Complexion ：When Cupric-Amminium Complexion first appeared, everyone said it was safe. Indeed, this drug is very safe, but this drug has a fatal shortcoming. If it is sprayed on eggplant leaves and sprayed in the afternoon, the leaves will wilt the next day and gradually return to normal the third day.
Glyphosate: The weakness of glyphosate is that it doesn’t kill grass at low temperatures, so don’t use this product at low temperatures. Farmers think that if you kill grass with glyphosate, the grass will die, and if it doesn’t, it’s fake. Therefore, the use of this product at low temperature to weed, can easily be regarded as fake medicine.
Acetamiprid:Acetamiprid, a popular drug for aphids, is familiar, but this one has a drawback, which is that it’s sensitive to temperature. High temperature, good insecticidal effect. At low temperatures, it doesn’t work so well. It doesn’t matter in the greenhouse, the temperature should be paid attention to when applying medicine in the open air.
Post time: Feb-28-2022