Which time of day is the best time for pesticide application?

Pesticide is an important agricultural measure in the modern agricultural production process.
It can not only kill insects and cure diseases, but also weed
.
In order to improve the effect of pesticide use, when spraying pesticides, it is necessary to determine the time of spraying according to the temperature, rather than unilaterally according to which time of the day is the best time to spray
.
The purpose of this is to extend the time for pesticides to be absorbed by crops, weeds, and pests as much as possible, and to avoid being evaporated by high temperature or reducing the efficacy of pesticides by low temperature
.
What temperature is conducive to the effectiveness of pesticides? For general pesticides (insecticide, sterilization, weeding), after spraying, the temperature must be above 10°C and below 30°C to be beneficial to the effectiveness of the pesticide
.
When the temperature is lower than 10℃, the effect of the medicine is slow and the effect is poor; when the temperature exceeds 30℃, the effective ingredients of the medicine are easily evaporated at high temperature, which reduces the efficacy of the medicine and is also prone to phytotoxicity
.
Therefore, the best temperature for pesticide application is within the range of 10 to 30°C
.
When the temperature is low, when is the best time to spray pesticides? In the southern and southwestern regions when the temperature is not too low in winter, it is also common to use pesticides to kill insects, sterilize, and weeds
.
Then, when spraying pesticides, it is necessary to choose weather without frost and snow, start spraying the pesticides after 10 am, and end at 4 pm
.
Try to use the time when the temperature is high at noon to spray the pesticides to improve the efficacy of pesticides
.
When the temperature is high, when is the best time to spray pesticides? When the temperature is high, especially in the midsummer season, the time to spray pesticides needs to be selected when the temperature of the day is low
.
Avoid spraying medicine in the hot sun to prevent the effective ingredients in the medicine from evaporating and causing phytotoxicity
.
If it is cloudy, you can start spraying the medicine after the dew is dry in the early morning and stop in the evening
.
When spraying pesticides on a sunny day, you need to avoid the noon high temperature and scorching sun, and start spraying the pesticides after the dew dries in the morning, and it will end at 10 o'clock
.
The drug started at 4 o'clock in the afternoon and stopped in the evening
.
Sometimes, you can also use the night to fight medicine
.
? (Source: Sannong talk about things)