6 errors out of pesticide use

There are several common misconceptions in the use of pesticides in agricultural practices. First, some farmers mistakenly use highly toxic pesticides for ultra-low-volume spraying. This method requires a higher concentration of the pesticide to maintain effectiveness, which can be dangerous. Ultra-low-volume sprays are generally intended for less toxic options such as pyrethroids, dimethoate, or neem-based products. Personnel should always position themselves upwind to avoid exposure. Highly toxic pesticides like 1605 or methamidophos should never be used this way, as it increases the risk of poisoning. Another misunderstanding is using granular pesticides by soaking them in water and spraying. Granules are specifically designed for targeted application, often used for soil treatment or weed control. They are not meant to be sprayed with water, as this can reactivate their toxicity and increase the risk of poisoning. These formulations are usually safer after granulation, but when mixed with water, their potency returns. Wettable powders are also often misused. These are fine powders made by mixing the active ingredient with wetting agents and fillers. Unlike regular dusts, they are not suitable for direct spraying. Instead, they must be suspended in water before application to ensure even coverage and proper effectiveness. Spraying during extreme weather conditions is another mistake. Pesticides work best between 20°C and 30°C. High temperatures can cause rapid evaporation and chemical breakdown, reducing effectiveness and increasing the risk of poisoning. Windy conditions lead to drift, making it hard for the pesticide to reach the target and causing environmental damage. It’s recommended that wind speed does not exceed 1 m/s. Rainy days are also unsuitable, as rain washes away the pesticide, reducing its impact and potentially contaminating surrounding areas. Using well water to dilute pesticides is another common error. Well water often contains high levels of calcium and magnesium, which can interfere with the emulsification and suspension properties of the pesticide, leading to reduced effectiveness or complete failure. This can also result in plant damage due to phytotoxicity. Lastly, many people misuse herbicides by applying them beyond their intended scope. For example, orchard-specific herbicides like Grass Gan Ning are not suitable for field crops. Even if some herbicides are safe for certain crops, such as corn, they must be applied carefully to avoid damaging nearby plants. Protective measures should always be taken to prevent accidental spraying and potential crop injury. By understanding these misconceptions, farmers can improve the safety and effectiveness of pesticide use, ensuring better crop protection and environmental sustainability.

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