What method is typically used for applying foliar sprays?

Foliar sprays are typically applied by ground application close to the plant to ensure that the pesticide effectively coats the leaves and stems of the target plants. This method allows for precise targeting of the foliage, where pests are most likely to be found, and facilitates better absorption of the active ingredients through the plant's leaves.

Ground application enables applicators to control the spray volume and droplet size, maximizing coverage and minimizing drift. By being in close proximity, the applicator can also adjust the technique based on specific conditions and the type of plants being treated, ensuring that the pesticide reaches the intended areas.

Other methods, like aerial application, could cover larger areas but may result in uneven distribution and higher chances of drift, while underwater spraying is not a standard practice for foliar applications, as it does not effectively reach the plant surfaces necessary for the desired effect. Applying on windy days generally poses risks related to drift and ineffective coverage, which is why it is not a recommended practice.