Is pesticide ineffective? Look at the six big mistakes. How many have you made?


In the process of using pesticides, farmers often reflect that the efficacy of pesticides is not good. Some new "good drugs" with complete three syndromes, new ingredients, sufficient content and new dosage forms are labeled "fake drugs" by farmers because of their poor efficacy. Many pesticides are wronged. Through understanding, it is found that the factors affecting the efficacy of pesticides involve many aspects.


There are six main reasons for the ineffectiveness of pesticide application. How to avoid these six operational errors is also a technology that new farmers must master.


1. Quality factors of pesticides themselves affect the efficacy of pesticides


The composition, physicochemical properties and dosage forms of pesticides all affect the exertion of their pharmacodynamics. There will be differences among different dosage forms with the same content of pesticides. The production process and production capacity of each company will be different, and the pharmacodynamics will also be different. At the same time, it is not excluded that some companies make articles on the content, and secretly reduce the content to affect the efficacy of drugs. Choose the formal products of the large formal manufacturers as far as possible.


2. The diagnosis of diseases is inaccurate and there are deviations in drug use.


At present, the diagnosis of diseases mostly relies on the experience of dealers and farmers, because the confusion between fungal diseases and bacterial diseases occurs from time to time. When fungi and bacterial diseases occur together, many farmers blindly characterize them as fungi or bacterial diseases, and use a single agent to prevent and cure them. Thus, it is very easy to miss the best period of disease prevention and treatment, resulting in some agents not reaching the effect of "one drug with multiple effects, medicine to disease" desired by farmers, which will result in poor efficacy.


3. Spray quality affects efficacy.


The quality of spray directly affects the level of efficacy. At present, some places use conventional spraying equipment, the droplets sprayed too large, and the fog falls on the surface of crops, which will cause bounce, and about 50% of the liquid drops on the ground, leading to the failure to fully play the efficacy. If the diameter of droplets is reduced by half, the number of droplets can be increased by 8 times and the efficacy can be greatly improved.


Many farmers are worried that the liquid can not be all on the surface of crops, so they increase water consumption, which not only can not improve the efficacy, but also reduce the efficacy. Because the drug droplets attached to the surface of crop leaves are limited, when the amount of spraying exceeds a certain limit, the fine fog droplets on the leaves will accumulate and roll down, reducing the amount of pesticides on the leaves.


In order to improve the spray quality, it is necessary to improve the existing spray equipment, reduce the aperture of the nozzle, reduce the diameter of the droplet, and maintain the distance between the sprinkler head and the crop at a distance of 20 cm or more, and form a good atomization effect. The loss caused by bouncing is particularly prominent in crops with thicker waxy layer.


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