What term describes a method to kill unwanted plants and organisms through the application of specific chemicals or processes?

Fumigation is a method used to eliminate unwanted pests and organisms, typically by using gaseous chemicals or vapors that infiltrate the area or material being treated. This technique is particularly effective for targeting insects and pathogens in soil or stored products. However, it is important to note that fumigation is generally not specifically described as a method for killing unwanted plants, which is typically more aligned with herbicide application.

In contrast, herbicide application directly refers to the use of chemicals specifically formulated to kill unwanted plants, such as weeds, without affecting desired plants. This method is commonly employed in landscaping, agriculture, and gardening to manage plant growth effectively.

Transplanting and grafting are horticultural techniques used for moving and propagating plants, but they do not relate to the destruction of unwanted organisms. Transplanting involves relocating a plant from one location to another, while grafting involves joining parts of plants together to grow as a single plant.

Thus, while fumigation is effective for eliminating certain pests, herbicide application more accurately describes the process of targeting unwanted plants through specific chemical methods.