As temperatures rise and rainfall increases, a variety of diseases and insect pests begin to affect land vegetables. This period also marks the time when vegetable farmers start applying pesticides to manage these threats. Unfortunately, some farmers have developed a habit of not using pesticides effectively after achieving success in the past. This not only leads to significant waste of financial and human resources but also results in excessive pesticide residues in vegetables, which can lower their market value and even compromise their food safety.
Several factors contribute to this widespread issue:
1. Many farmers fail to rotate pesticides, leading to the development of pest resistance. Without proper rotation, the effectiveness of pest control decreases over time.
2. Farmers often lack knowledge about proper pesticide use. They may exceed recommended dosages, apply too frequently, or ignore safety intervals. Some believe that higher doses and more frequent applications will yield better results, but this can cause phytotoxicity and increase residue levels in crops.
3. Farmers tend to act only when visible damage is already present, rather than taking preventive measures. For example, the best time to control diamondback moths is during the hatching stage, before larvae reach their peak population. Delaying treatment reduces its effectiveness.
4. Some farmers rely on trial-and-error methods, switching between different pesticides without understanding the optimal timing for each. Others follow others’ choices blindly, purchasing whatever is popular without considering whether it’s suitable for their specific situation. This not only delays control efforts but also raises costs.
5. Pesticides are often mixed improperly. Farmers may combine multiple products in an attempt to save labor, believing that more combinations mean better results. However, this can lead to phytotoxicity and reduced effectiveness, making it hard to correct later.
6. Improving application techniques is essential. Using sprayers with fine mist nozzles can enhance pesticide efficiency. For crops like cabbage, which have waxy leaves, adding a small amount of detergent to the spray solution can improve coverage and effectiveness.
In conclusion, it is crucial for vegetable farmers to adopt safe, rational, and scientific practices when using pesticides. By identifying and acting during the optimal control window, they can achieve better pest management while reducing the number of applications and saving labor. This approach not only protects crop quality but also promotes sustainable farming.
It takes at least 2 months for Pacific saury to be directly sold or processed.How to effectively maintain the nutritional value and flavor of saury has also become a research hotspot. At present, the easiest and most effective way to store saury is freezing. The lower the freezing temperature is, the more beneficial it is to maintain the quality of saury. It can only be stored for 180 days at -20°C, and -30°C is the suitable temperature for freezing saury.
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Zhejiang Industrial Group Co., Ltd. , https://www.xingyeseafood.com