What is chemigation?

Chemigation refers to the process of applying pesticides or fertilizers through an irrigation system. This method integrates the delivery of these substances with the watering of crops, allowing for efficient and uniform distribution. By injecting the chemicals into the irrigation water, it ensures that the application coincides with the water supply, promoting both effective pest control and optimal nutrient management.

Chemigation can be beneficial in various agricultural practices as it allows for more precise application targeted at the root zone where plants can absorb nutrients and pesticides effectively. This method can save time and labor while also reducing the risk of chemical runoff.

Other options describe different methods of application for pesticides but do not accurately define chemigation. Applying pesticides directly to plant surfaces involves a different technique that does not utilize irrigation systems. Injecting pesticides into the soil is also distinct, focusing on soil treatment rather than the integrated method of applying through irrigation. Finally, using chemicals to purify irrigation water addresses a different agricultural concern related to water quality, rather than the application of chemicals for pest management.