What problems exist in the use of pesticides and chemical fertilizers?
Pesticides and chemical fertilizers are substances we need to use no matter what we are growing. They are also the key to ensuring normal crop growth and improving yield and quality. However, the use of pesticides and chemical fertilizers requires a great deal of attention, and many people have numerous problems in their use. So what exactly are they? Below, the editor brings you the problems in the use of pesticides and chemical fertilizers. Let's take a look!
1. Pursuing fast-acting effects
When using pesticides and chemical fertilizers, many people like to choose fast-acting ones, because after using fast-acting pesticides and fertilizers, results appear within a short time. For example, some foliar fertilizers are mainly composed of nitrogen fertilizer, and about three days after spraying, the effect can diminish. But in fact, if too many fast-acting products are used, it will lead to excessive vegetative growth, affecting the development of the crop throughout its entire growth period. In severe cases, highly toxic and high-residue pesticides are still being used, causing pesticide residues in crop products to seriously exceed the standard and harming human health.
2. Chasing novelties and seeking something different
At present, there are a great many varieties of pesticides and chemical fertilizers in our country, and among them there is no shortage of some unlicensed products. Because pesticides and chemical fertilizers are updated quickly, many people like to use some new pesticides. Take pesticides as an example: although new pesticides may be able to control some pests that have already developed resistance, many pesticides nowadays are mainly mixed formulations, and when used they are extremely prone to causing phytotoxicity. Moreover, some new types of pesticides and chemical fertilizers have not undergone extensive publicity and promotion, and their effects are not very well understood either. Blind use can easily lead to various problems.
3. Excessive use
Excessive use of pesticides and fertilizers is the most common problem. Many people, blindly pursuing yield, will continuously apply fertilizer and spray pesticides. And when using them, the dosage also far exceeds the required range. Therefore, it is often easy to cause phytotoxicity and fertilizer damage to crops, which not only fails to help crop growth at all, but also greatly affects yield. In addition, farmers may place too much trust in the effects of some fertilizers and pesticides, thus using a certain pesticide or chemical fertilizer alone for a long time, and over time, its effect will become worse and worse.
4. Application methods
When we apply fertilizer, the application method is also very important. Different crop growth stages require different fertilizer application methods. If used improperly, it can easily cause fertilizer damage to crops. For example, if farmyard manure that has not been fully decomposed is applied, it is easy to bring harmful gases and bacteria into the field, affecting crop growth. And when using pesticides, many people have not understood plant protection knowledge or fertilizer knowledge. As a result, after crops show abnormalities, they cannot diagnose them in time and then begin to use pesticides blindly, which is also very unfavorable to crop growth.
The above is a brief introduction to the problems in the use of pesticides and chemical fertilizers. That's all for today's introduction. This article is for reference only, and I hope it can help everyone!