Which application method is focused on specific plant parts to minimize pesticide use?

The application method that focuses on specific plant parts to minimize pesticide use is directed spraying. This technique involves targeting specific areas of a plant, such as leaves or stems, rather than treating the entire plant or surrounding areas. By concentrating the pesticide precisely where it is needed, directed spraying can effectively address pest problems while reducing the overall amount of chemical used. This approach aligns with integrated pest management strategies, which aim to minimize pesticide use and environmental impact.

Other methods, while useful in their contexts, do not focus on specific plant parts as effectively. For instance, foliar application generally involves spraying the entire leaf surface, which may lead to excess pesticide use. Band application targets only a strip of soil or plants, but it may not be as precise as directed spraying for specific plant structures. Confined space application refers to treating areas with limited space, which is not necessarily focused on specific plant parts. Thus, directed spraying stands out as the most targeted method for minimizing pesticide use on specific sections of plants.