Before purchasing pesticides, it is essential to first identify the specific pests and diseases that need to be controlled. Understanding what needs to be treated and what needs to be cured will help in selecting the right type of pesticide. When buying, always check the label and description of the **pesticide** carefully. Legitimate products will have clear information on the label, including the name of the pesticide, the concentration of active ingredients, the registered trademark, batch number, manufacturing date, shelf life, and three key certifications: the pesticide registration certificate number, approval certificate number, and product standard number. Additionally, a complete manual and certificate should accompany the product. Avoid purchasing any pesticide that lacks full certification or has unclear labels.
Inspect the outer packaging thoroughly before making a purchase. Do not buy any pesticide that has damaged, missing, or illegible labels. Pay attention to the physical condition of the product—such as powders that have clumped together, liquid formulations that appear cloudy, emulsifiable concentrates that are not clear, or granules that contain excessive fine dust. These signs may indicate poor quality or expired products. Also, be cautious when purchasing multiple-ingredient or multi-purpose pesticides. Some products may have the same name but different active ingredients. For example, products like Dagongchen, Four Seasons Red, One Pass Net, Phlegm, and Imidacloprid all refer to 10% Imidacloprid Wettable Powder, but they may differ in formulation or additional components. Others, such as “Rice Insect Net,†might combine insecticides with Bt (Bacillus thuringiensis) or mix various pyrethroids and organophosphates. Although the names may be similar, their active ingredients can vary significantly, so it’s important to read labels carefully.
When applying pesticides, farmers should follow several key guidelines:
First, apply the pesticide based on symptoms and at the right time. Accurately identifying the pest or disease is crucial to determining the correct target for treatment. Select the appropriate pesticide and dosage form based on the stage and severity of the infestation. For disease prevention, apply protective agents before symptoms appear. Once the disease has occurred, switch to therapeutic agents. The principle of early protection and timely treatment must be followed, and repeated applications may be necessary for effective control.
Second, use pesticides wisely. Avoid increasing the dose, concentration, or frequency unnecessarily, as this can lead to plant damage or resistance. Use the lowest effective concentration possible for prevention and control. The number of applications should be determined based on the residual effect of the pesticide and the level of infestation.
Third, pay attention to the application method. Different pesticide formulations require different techniques. Emulsions and wettable powders are usually sprayed or poured, while powders are typically applied through spraying. Granules are often spread or incorporated into the soil, and liquid absorbents can be sprayed, poured, or used for stem coating. Pesticides with different modes of action should also be applied using appropriate methods to maximize effectiveness. Choose the right technique and timing based on the nature of the disease, the behavior of the pests, and the type of pesticide being used.
This article was originally published by the **China Pesticide Network**. Please cite the source if you reproduce this content.
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