Purchasing pesticides requires more than just checking for a registration certificate, production permit, and manufacturer’s address. It is essential to verify the presence of active ingredients, as these determine the pesticide’s effectiveness against specific pests or diseases. If a product lacks the correct active ingredients, it may not control the targeted issue effectively and could be considered counterfeit. For example, Dioxin contains difenoconazole, while Fuxing contains fluorosiliconazole—both are synthetic triazole fungicides used to combat fungal infections.
When choosing high-cost pesticides, the unit price doesn’t always mean high overall cost. Pesticides are a necessary investment in crop protection, and reducing medication costs should be a priority. However, when calculated properly, expensive pesticides can often offer better value. Take 40% Fuxing EC as an example: priced at 700 yuan per liter, it is typically diluted at 8,000–10,000 times. At 8,000 times, one kilogram of Fuxing covers 8,000 liters of water. If each tree receives 15 liters of spray, the cost per tree is about 1.4 yuan. Using Fuxing 3–4 times during critical periods can effectively prevent pear black spot disease. In contrast, cheaper alternatives may require more frequent applications, leading to higher overall costs and less effective control.
It is advisable to purchase single-agent pesticides and use mixtures cautiously. While combining two or more pesticides can enhance efficacy by targeting different pathogens or pests, improper mixing can lead to wasted resources. For instance, some fungicide combinations aim to delay resistance, while others are designed to target multiple pests. However, many commercial mixtures contain similar active ingredients that don’t work synergistically, or they combine products meant for different pest types. Even if the formula seems logical, it may not achieve the desired control for both pests simultaneously, resulting in inefficiency and increased costs. Therefore, careful selection and understanding of pesticide interactions are crucial for optimal results.
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