Practice has shown that the best time to spray pesticides during summer, whether for food crops, vegetables, cash crops, or fruit trees, is between 8 a.m. and 10 a.m., or around 5 p.m. This timing is crucial for maximizing the effectiveness of the pesticide.
By 9 a.m., morning dew has usually dried up, and the temperature is relatively mild. This is when many pests are most active, feeding, moving, and mating. Spraying at this time can be less effective because the dew may wash away or dilute the pesticide, reducing its potency. Additionally, high temperatures later in the day can cause some chemicals to break down more quickly, further decreasing their impact.
Spraying between 8 a.m. and 10 a.m., however, allows the pesticide to remain on the plants longer, increasing the likelihood that pests will come into contact with it. This leads to better coverage and higher mortality rates.
In the late afternoon, around 5 p.m., the sun begins to set, and light becomes dimmer. At this time, many nocturnal insects become more active. Spraying during this period can also be highly effective, as these pests are more likely to be out and about, making them more vulnerable to the pesticide.
Choosing the right time to spray not only improves the efficiency of pest control but also helps reduce the amount of pesticide needed, which is better for both the environment and crop health. It's important to consider local weather conditions and pest activity patterns to determine the optimal spraying window for each situation.
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