Points for attention in the use of fungicides

Fungicide is an indispensable pesticide product in our planting and production. Because no matter what is planted, it is inevitable to encounter some diseases that harm the growth of crops. However, fungicides as a pesticide, there are still a lot of places we need to pay attention to when using. So the editor brings you some notes on the use of fungicides today. Let's take a look at it.

1. Pay attention to concentration

We are spraying fungicides, especially when using concentrated liquid agents for spray control. Must pay attention to control the concentration, first of all, we need to dilute the fungicide with water to avoid excessive concentration. If the concentration is too high, it will not only lead to waste, but also very easy to cause crop drug damage, but the concentration should not be too low, too low concentration will lead to efficacy failure. If it is some non-wettable classification, then first put the powder into a paste, and then add the right amount of water to prepare.

2. Spraying time

The spraying time of fungicides is directly related to its efficacy. If the spraying time is too early, then too low efficacy will lead to waste. But it should not be too late, because if it is too late, it is easy to cause a large number of pathogenic microorganisms to invade crops. Even if the internal inhalation therapy was sprayed, it had no obvious effect. When spraying, we should pay attention to the prediction work according to the disease law of crops and the actual situation, so as to ensure that the spray guarantee work should be done well when there is no disease or at the initial stage of the disease.

3. Times and quality of spraying

The number of spraying also needs our attention, which is mainly controlled according to the residual period of the fungicide and the climate and environment. It is usually sprayed every two weeks or so, about three times. If it rains after spraying, it is necessary to replenish the spray in time, and at the same time consider the cost to avoid excessive cost of medication. Then to control the amount of spray, not too little, too little can not guarantee the protection of all aspects of crops. Too much will lead to drug damage, in the spray to ensure that the spray is uniform, both sides of the leaves should be sprayed in place.

4. Drug damage

The problem of drug damage is the most important thing we need to pay attention to when using fungicides. During spraying, there are many reasons for drug damage to crops, such as water-soluble agents are the most prone to drug damage. However, the sensitivity to chemicals varies from crop to crop. Bordeaux liquid, for example, usually does not cause drug damage. On the other hand, crops such as potatoes and beans are more sensitive to stone-sulfur mixture and are easy to cause drug damage of this kind of agents. At the same time, the response of crops to chemicals is also different in different growth stages. Generally speaking, crops are most vulnerable to drug damage at the seedling stage and booting stage.

The above is a brief introduction to the matters needing attention in the use of fungicides. That's all for today's introduction. This article is for reference only. I hope it can help you all.