Hit the big and not the small

It is to wait until the weeds have grown for a certain period of time before starting to use the medicine. If the weeds are small, the area of the weeds in contact with the liquid becomes smaller, which is not conducive to the death of the weeds. The most obvious situation is rebound or poor effect. Sanzheng Organic

However, the weeds should not be too large. If the weeds are too large, the resistance will be enhanced and the amount should be increased.

In general, weeds are best used at the 2~4 leaf stage.

Hard to beat

What does this sentence mean? When spraying, don’t start spraying just because a small number of weeds have just grown in the field. The consequence of this is that after a month and a half, you will find that there are more and more weeds in the field than before the spray. thing?

If the weeds are too thin, most of the liquid medicine will hit the ground and evaporate. After a few days, the weeds will slowly grow out, which means that the medicines sprayed a few days ago are completely useless, and you have to hit them again.

Therefore, when the weeds are almost out, go to fight medicine if it is a little dense. The denseness mentioned here is not big, remember to distinguish.

Wet not dry

What does the last point mean? In fact, it depends on the soil moisture. The soil moisture is not good. When the weather is relatively dry, try not to spray medicine.

Why? The ground is dry and the weeds lack water. In order to maintain moisture, their pores will be closed. In this case, the liquid medicine will not absorb much if it is applied, resulting in the medicinal effect and the weeds will not die.

So some people have said that the weeds have 2~4 leaves, and they are relatively dense. If it is drought at this time, if I don't spray the medicine, wouldn't I miss the best time?

This problem is often encountered in actual production. There are two ways to solve it, one is irrigation and watering, and the other is to fetch more water when spraying the medicine to increase the water consumption, but the overall concentration of the chemical solution cannot be reduced.

Netizens added:

1. Do not use turbid water when mixing the liquid, and it is best to use the secondary dilution method to make the droplets evenly dispersed.

2. The atomization of the sprayer should be moderate. If the droplets are too large, the leaf surface distribution is not good, and it is easy to roll off. If the droplets are too small, the evaporation effect is obvious, and the potency is lost.

3. Avoid spraying before dew and rain.