Vegetable farmers can use **pesticides** more scientifically, rationally, and efficiently when they have a proper understanding of the medicines and their common usage. To ensure effective and safe pesticide application, it's important to avoid five major mistakes that many farmers commonly make.
First, there's the **blind application** mistake. Some farmers apply pesticides without understanding the life cycle and development patterns of pests and diseases. Instead of following scientific guidelines, they rely on personal experience, spraying pesticides indiscriminately whenever they notice any changes in leaves or fruits. However, each pest has its own habits and impact. For example, powdery mildew tends to attack the young parts of melons, while black spot usually starts from the lower leaves. Aphids and mites are often found on the underside of leaves, feeding on plant sap. Most pesticides are specifically targeted at certain pathogens, so using them incorrectly can be ineffective and even harmful.
Second, the **overuse** problem is widespread. Many farmers do not follow the recommended dosages on the labels but instead estimate the amount based on their own judgment, leading to excessive use. This not only increases the risk of pests developing resistance but also harms the environment by disrupting the ecological balance. Overuse of low-toxicity pesticides over time can lead to long-term problems, including reduced crop quality and economic losses.
Third, some farmers believe that applying pesticides during the hottest part of the day—like midday—yields better results. This is a dangerous misconception. Spraying under high temperatures in enclosed greenhouses can cause pesticide poisoning due to poor ventilation and high concentration. The **pesticide network** advises farmers to spray before 10 a.m. or after 4 p.m., when conditions are safer and more effective.
Fourth, the **improper mixing** of pesticides is another common issue. Many farmers mix different chemicals without understanding their compatibility, which can lead to harmful interactions. Some combinations may reduce effectiveness, while others can cause phytotoxicity, damaging crops and lowering yields. It's essential to follow proper mixing procedures: start with wettable powders, then suspensions, water-based agents, and finally emulsifiers, ensuring thorough stirring. Pesticides should not be stored for long periods after mixing and must be used promptly.
Lastly, some farmers rush to spray pesticides as soon as they see a few pests in the greenhouse, thinking it’s necessary to eliminate them completely. However, the **Chinese pesticide network** reminds us that not all pests require immediate action. If the pest population doesn’t reach a level that causes economic damage, there’s no need to spray. Overuse of pesticides can actually increase resistance, making future control more difficult.
By avoiding these common mistakes and adopting a more informed approach, vegetable farmers can protect their crops more effectively while preserving the environment and reducing long-term costs.
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