Winter greenhouse vegetables are prone to downy mildew, gray mold, root diseases and whiteflies, prevention and control should take active prevention strategies, active spraying protection, so that in the shed crops for a good year. Based on the premedication, we must pay close attention to the "two elections and one extension":
The selection of winter pesticides suitable for winter use generally means that contact poisons and bacterial agents are less affected by temperature, and inhalants and fumigants are greatly affected by temperature. Such as chlorothalonil, fast-king, deltamethrin, phoxim and other pesticides, can still play a better control effect at lower temperatures.
Choose sunny high-temperature medication because the insects increase their activity when the temperature is slightly higher in winter, and their intake and respiratory intensity are greater than that of cold weather. The probability of spraying the liquid on the insect body increases, and many medicines are brought into the body. It is beneficial to play a poisonous role.
Prolonging the safety interval of crops Winter pesticides are used. The degradation rate of pesticides slows down, and the residual period of pesticides in crops is relatively prolonged. When winter diseases and insect pests of vegetable crops are controlled, special attention should be paid to vegetables that are not harvested before the harvest. After the pesticide is applied, no vegetable products will be picked during the pesticide safety interval to ensure that the vegetables will be listed safely without pollution.
China leading manufacturers and suppliers of Amniotomy Hook,Medical Amniotomy Hook, and we are specialize in Sterile Amniotomy Hook,Individula Package Amniotomy Hook, etc.
Amniotomy Hook,Medical Amniotomy Hook,Sterile Amniotomy Hook,Individula Package Amniotomy Hook
Luck Medical Consumables Co.,LIMITED , https://www.luckmedical.com