Cold-day application of pesticides to improve efficacy five points
2022-11-02 05:06:44
The use of pesticides suitable for low temperature weather applications is generally under the influence of temperature on the stomach toxins and contact poisons, while the inhalants and fumigants are more affected by temperature. For pesticides such as the enemy killed, low temperature will obviously affect its insecticidal effect; and pesticides such as lime sulfur can still exert better insecticidal and bactericidal effects when applied at lower temperatures. In addition, herbicides are applied on a cold day, and their display effect is much longer than that of the hot season. Therefore, be patient and wait patiently as long as the liquid sprays into place, generally do not need to re-spray.
Select high-temperature sunny days during the period of high temperature in the early winter and early spring when the temperature, pest intake and respiratory intensity is greater than the cold weather, sprayed on the body of the liquid is brought to the body more, is conducive to play poisonous effect .
The dosage should be appropriate in late spring and early spring. Due to climatic factors, pesticides have a slower effect. Therefore, when the efficacy is low, the concentration can be appropriately increased, depending on the temperature, but it is generally not more than 50% of the conventional dosage.
The priority is to use pesticides such as Bordeaux mixture, lime sulfur, etc. Pesticides are economical and effective, but care should be taken to avoid injury.
Pay attention to the safety interval of pesticides Applying pesticides in winter and early spring, the degradation rate of pesticides will be slower, and the residual period of pesticides in crops will be relatively prolonged. When crop pests and diseases are controlled, special attention should be paid to prolonging the safety interval of pesticides to ensure human health.
Select high-temperature sunny days during the period of high temperature in the early winter and early spring when the temperature, pest intake and respiratory intensity is greater than the cold weather, sprayed on the body of the liquid is brought to the body more, is conducive to play poisonous effect .
The dosage should be appropriate in late spring and early spring. Due to climatic factors, pesticides have a slower effect. Therefore, when the efficacy is low, the concentration can be appropriately increased, depending on the temperature, but it is generally not more than 50% of the conventional dosage.
The priority is to use pesticides such as Bordeaux mixture, lime sulfur, etc. Pesticides are economical and effective, but care should be taken to avoid injury.
Pay attention to the safety interval of pesticides Applying pesticides in winter and early spring, the degradation rate of pesticides will be slower, and the residual period of pesticides in crops will be relatively prolonged. When crop pests and diseases are controlled, special attention should be paid to prolonging the safety interval of pesticides to ensure human health.
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