Which of the following adjuvants are appropriate for a spray application in which the herbicide must adhere to the surface of a plant and form a uniform coating over the leaves?

In the context of herbicide application, adjuvants play a crucial role in enhancing the effectiveness of the treatment. The correct choice focuses on adjuvants that specifically contribute to the adhesion and coverage of the herbicide on plant surfaces.

Sticker and spreaders are designed to increase the adherence of a spray to the leaf surface, ensuring that the herbicide forms a uniform coating. Stickers help the herbicide remain on the leaf longer, which is especially important for efficacy, as it allows more time for the herbicide to be absorbed. Spreaders help to reduce surface tension, allowing the spray to cover the leaf surface more evenly and thoroughly, which maximizes the area that the active ingredient can contact.

In contrast, other options include combinations of adjuvants that may not specifically target adhesion and uniform coverage as effectively. Fertilizers and penetrants, for example, serve different roles, such as providing nutrients or enhancing penetration, but they do not primarily focus on ensuring that the herbicide adheres uniformly to the surface. Similarly, stabilizers and binders may play roles in maintaining the formulation's integrity or preventing degradation, rather than optimizing adherence and spread on plant surfaces.

Thus, the selection of sticker and spreader is ideal for