To ensure adequate pesticide coverage, what should you check for on the foliage?

To ensure adequate pesticide coverage, checking for visible residue on the foliage is essential. This residue indicates that the pesticide has been properly applied and that the target plants received the treatment effectively. When the pesticide is visible, it serves as a good sign that sufficient product has adhered to the leaf surface, which is crucial for the pesticide to perform its intended function. Uneven distribution or lack of residue could mean areas were missed during application, potentially reducing the overall effectiveness of pest control.

In contrast, while uniform coloration and leaf curling may be indicative of the health of the plant or the presence of diseases, they do not provide direct feedback on pesticide application efficacy. Similarly, the height of plants is unrelated to pesticide coverage since it does not inform you about how well the pesticide was distributed across the foliage. Thus, checking for visible residue gives a clear indication of whether the target area has been adequately treated.