What type of irrigation system allows for the application of certain chemicals and fertilizers to crops?

The type of irrigation system that allows for the application of certain chemicals and fertilizers directly to crops is pivot irrigation. This system utilizes a series of rotating sprinklers mounted on wheeled towers that move around a central pivot point. One of the key advantages of pivot irrigation is the ability to integrate fertigation, which is the process of delivering fertilizers through the irrigation system.

This capability enables farmers to apply nutrients efficiently and uniformly, directly to the root zone of the plants, maximizing uptake and minimizing waste. The controlled delivery also helps reduce the risk of runoff and leaching, making it an environmentally friendly choice.

While other irrigation systems like drip irrigation can also apply fertilizers, pivot irrigation specifically excels in large field applications where uniform coverage is essential. The design of pivot irrigation systems allows for flexibility in the timing and quantity of fertilizer application, further enhancing crop management.

Other options, while effective in their respective contexts, do not offer the same level of integrated nutrient application as pivot irrigation, thereby highlighting why pivot irrigation is the correct choice.