When is the good time to use herbicide in hot weather? How can I play well?

After entering the three-volt weather, most of the crops in our country do not need medicine, but for the crops planted in summer, it is necessary to do a good job in field management. therefore, weeding is still necessary. when is it good to use herbicides in hot weather? How can I play well?

First, in terms of the weather

1. Sunny day

If it is sunny and hot, it is recommended to hit the herbicide after 4: 00 to 5: 00 p. M. some people say, is it OK in the morning? according to common sense, it is also possible before 8: 00 to 9: 00 in the morning, but why not? it is mainly because in sunny and hot weather, after the herbicide is injected in the morning, it takes a process (usually about 6 hours), and the weeds have not been fully absorbed yet. When the sun comes out at noon, the liquid will evaporate quickly, so that the amount of herbicide solution absorbed by weeds will be reduced, and the weeding effect will be reduced. If you hit herbicides after 4-5 p.m., after overnight absorption, the effect of dead weeds will be more satisfactory (although the temperature at night is not low, but it is better than during the day), so it is recommended that you hit herbicides in the afternoon.

2. Cloudy days

In cloudy days, when there is no direct sun, after the herbicide, the evaporation of the liquid is relatively not so fast, but the temperature is still very high, so we should still pay attention to this. It is also recommended to give medicine in the afternoon. If you want to take medicine in the morning (in the case of dew), you can also take medicine for the same reason as above.

In addition, whether it is sunny or cloudy, it is not recommended to take medicine at noon, and another reason is safety, to avoid heatstroke. If you go to the field to take medicine at noon, once you get heatstroke, you dare not imagine the consequences.

Second, in terms of planting objects

1. Retail investors

Retail investors, referring to the situation of most of us, have a few acres of land at home, plant some crops, leave some of them to eat, and sell the rest in exchange for some profits. in the case of retail investors, the time for herbicide is the same as mentioned above. no matter it is sunny or cloudy, in the case of high temperature, it is recommended to take medicine in the afternoon or in the evening. For example, if you have 5 mu of land at home, it is corn that is planted sometimes. These five mu of land are not even blocks, and there may be several places where you need to run around on tricycles and medicine buckets. If you can't finish it in one day, you can finish it in two days, and it won't affect the crops.

2. Large households

Large farmers can be big farmers, co-operatives, farms, and so on. Why should we say otherwise? As we all know, during the period of medication, large families hire more people (or take medicine by themselves), usually pay daily wages and take care of the food. If they are asked to wait until 4-5 p.m., they will work for those few hours a day, regardless of whether the host is willing or not. When the fight is finished (in the case of thousands of mu), the weeds in the field will grow very high, and the weed resistance will be enhanced, and the fight will not achieve the effect, which is tantamount to wasted work. Therefore, in view of the situation of large households, it is suggested to administer medicine according to the actual situation, so as to avoid the particularly hot two hours at noon, and if there are a lot of land, you can also work overtime at night (under the premise that the equipment can see clearly).

In addition, when using herbicides, I would like to remind you of three points to pay attention to:

1. The dose of herbicide can not be increased at will. Some friends will think that when the herbicide is applied at high temperature, it will evaporate more, and it is wrong to increase the dosage. In the best suitable period for weeds, the herbicide should be used according to the instructions.

2. The herbicide is recommended to be diluted twice, first mixed evenly in a small container, and then inverted in a large container, whether it is a human back sprayer, a medicine machine or a drone.

3. Under the premise that the dose of herbicides per unit area is fixed, the more water, the better, to break through the grass, so that the weeding effect can better achieve our goal.