Speaking of pyrimethanil, which can cure gray mold, everyone may not be unfamiliar, but it should not be negligent. If it is not used properly, it will cause phytotoxicity. Now, the pesticide network Xiaobian introduces you to the basic method of using pyrimethanil to avoid phytotoxicity during use.
Pyrimethanil, which is used to cure gray mold, will have very little effect, but we need to pay attention to the sensitive crops of pyrimethanil, such as legumes and eggplant. When using pyrimethanil, we must pay attention to Reasonable control of the dose.
It belongs to the anilinopyrimidine fungicide pyrimethanil, and its mechanism of action is very unique. It can cure the gray mold bacteria preferentially. It has a very strong systemic conductivity, and it can quickly eliminate the germs when the pesticide containing the ingredients can quickly reach the position where the flowers and young fruits of the crop cannot be reached. And very stable. And the efficacy of this pesticide is not very sensitive to temperature, when the temperature is relatively low, its effect will not change, the effect of curing gray mold is still very good.
If the medicinal damage is caused on the eggplant, a lot of dark brown spots will be produced on the leaves of the crop, and the shape of the lesions is irregular or the leaves of the crop are yellowed and dropped. In the case of phytotoxic spots, many vegetable farmers also believe that eggplant is a "spotted deciduous disease". As a result, pesticides are used again to aggravate the phytotoxicity. Therefore, it is recommended that the majority of vegetable farmers must distinguish the pyridoxamine plaque. And a dangerous condition that infects disease spots.
The phytotoxicity of pyrimethanil on legumes is usually said to be yellow-white in the leaves of the crop. If the phytotoxicity is serious, it will cause dryness and shedding, and the same flower will also cause it to fall. Sensitivity to legumes and eggplants to pyrimethanil does not mean that pyrimethanil should not be used, but it is best not to use it or to use it at a concentration that is strictly controlled. Here, the Chinese pesticide network gives the scientific use concentration of beans and eggplant. For example, 20% of pyrimethanil powder, beans and eggplants have a maximum safe use concentration of 600 times during the growth period. It is said that the minimum amount of water added to 100 grams of powder is 120 kg. It is also necessary to use the drug in a well ventilated condition.
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