What is NOT a purpose of plantation weed control?

The answer is C, as improving soil structure is not a primary purpose of plantation weed control. The main goals of weed control in a plantation setting are typically focused on promoting the growth of tree seedlings and reducing competition from weeds that can hinder their development.

When weeds are present, they can compete with tree seedlings for essential resources like sunlight, water, and nutrients, which is why reducing their presence is a crucial aspect of plantation management. Encouraging tree seedling growth directly ties into the purpose of controlling weeds, as a healthier, less competitive environment allows for better establishment and maturation of trees.

Efficient herbicide use also plays a vital role in plantation weed control. Timely and targeted application of herbicides can ensure that weeds are effectively managed while minimizing environmental impact and reducing costs. However, improving soil structure is generally addressed through different agricultural practices, such as crop rotation, organic matter addition, and tillage methods, rather than through direct weed control strategies.