In the hot summer season, many farmers tend to apply pesticides during the midday when temperatures are at their peak. They believe that high temperatures can enhance the effectiveness of pest control, but this practice often leads to adverse outcomes and even harm.
First, the insecticidal effect is usually poor. Many pests are more active during the evening or at night, such as rice blast, cotton bollworms, and cutworms. These pests are sensitive to light and heat and tend to hide during the day. As a result, applying pesticides at noon is less effective compared to spraying in the evening when the pests are more active.
Second, the efficacy of the pesticide solution decreases. Most pesticide formulations are volatile and prone to degradation. During the high temperatures of midday, air molecules become more active, causing the pesticide to evaporate quickly. This reduces the duration of its effectiveness, making it less efficient in controlling pests.
Third, applying pesticides in high temperatures can lead to phytotoxicity in crops. At noon, the stomata on plant surfaces open up, increasing transpiration and water loss. When pesticides are applied under these conditions, the chemicals may be absorbed through the stomata, placing extra stress on the plant’s water system. This can damage the plant's physiological functions, leading to symptoms like leaf burn or wilting in young plant parts.
Fourth, this practice poses risks to human health. Midday temperatures often exceed 35°C, and if there is little wind, the pesticides can easily volatilize into the air, increasing the concentration of harmful molecules. Inhaling these pollutants, combined with the physical strain of working in the heat, can lower the body's resistance, increasing the risk of pesticide poisoning and heatstroke. Every year, numerous incidents of pesticide-related accidents occur due to improper application times.
To maximize the effectiveness of pesticides, reduce crop damage, and ensure safety, it is advisable to avoid applying them during the hottest hours of the day. Instead, choose to spray during cloudy or early morning hours when the temperature is more moderate and the risk of harm is significantly reduced. By following these guidelines, farmers can protect both their crops and themselves.
MECAIR Type Pulse Valve Diaphragm
NINGBO DOTEC is a pulse Valve Diaphragm manufacturer and supplier in China for many years. We have various diaphragms for MECAIR pulse valves. Pls just tell us your Pulse Valve model or diaphragm model, then we will check it out and offer you price accordingly.
Different Options:
1. Diaphragm Sheet Material: NBR, EPDM, FKM, TPE, TPEE, HYTREL, etc
2. Diaphragm Seat Material: NBR, EPDM, FKM, Nylon, TPE, TPEE, PTFE, etc
3. Suitable Pulse Valve Size: from 1/2'' to 4''
4. Customization: If you have a drawing or can provide a sample, we can make the same diaphragm as yours
MECAIR Diaphragm, MECAIR Pulse Valve Diaphragm, MECAIR Pulse Valve Membrane
NINGBO DOTEC AUTOMATION CO., LTD , https://www.ningbodotec.com