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When should low volume sprays not be applied?

  1. During low temperature

  2. During periods of high temperature or low humidity

  3. When raining

  4. In the morning hours

The correct answer is: During periods of high temperature or low humidity

Low volume sprays should not be applied during periods of high temperature or low humidity due to the significant potential for increased evaporation and drift. In high temperatures, the liquid in the spray can vaporize quickly, reducing the effectiveness of the pesticide and potentially leading to insufficient coverage on the target area. Low humidity exacerbates this issue as it also promotes faster evaporation rates. This can result in more pesticide being lost to the environment instead of reaching the intended pests or plants, reducing the effectiveness of the application and potentially increasing the risk of environmental contamination or harm to non-target organisms. In contrast, low temperatures, rainy conditions, and morning hours may present different considerations, but they do not inherently undermine the integrity of low volume spray applications to the same extent.