Herbicide application experience

Do not play small

The idea is to wait until the weeds grow to a certain period before starting the medication. If the weeds are used when they are small, the area of ​​the weeds that contacts the liquid becomes smaller, which is not conducive to the death of the weeds. The most obvious situation is that the rebound or the effect is not good. However, weeds should not be too large. When they are too large, the resistance will increase and the quantity will need to be increased. In general, weeds are best used at the 2 to 4 leaf stage.

Dense and not diluted

What does this sentence mean? It is said that we should not start applying pesticides because a small amount of weeds have just grown in the field. The result of this is that we find more weeds in the ground after half a month than before. This is because the weeds are too thin, most of the liquid falls on the ground, and then volatilizes. After a few days, the weeds grow slowly. The drugs that were used in the previous days have no effect at all. Therefore, we should fight drugs when the weeds are a bit dense. The “secret” here is not “big”, and the two should be separated.

Wet not dry

The meaning is to look at the lyrics in the field, when the sensation is not good, and when the weather is relatively dry, try not to fight drugs. why? The land is arid and the weeds are deficient in water. In order to maintain the moisture, the pores are automatically shut off and the liquid is not absorbed to a large extent, resulting in poor efficacy.

If weeds already have 2 to 4 leaves, and they are still dense, because the drought does not have to use drugs, is it not the best time to miss?

This problem is often encountered in actual production, there are two ways to solve, one is watering irrigation, the second is to increase the amount of water in the fight, but the overall liquid concentration can not be reduced.

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