What is the purpose of a secondary canal in agricultural irrigation?

The purpose of a secondary canal in agricultural irrigation primarily revolves around its role in efficiently distributing water to specific areas of farmland. Secondary canals branch off from the main canal and are designed to ensure that various parts of an irrigation system receive adequate water supply tailored to the needs of the crops in those areas. This targeted distribution allows for better water management, ensuring that each section of the agricultural land can get access to the right amount of water for optimal crop growth.

In contrast to options that mention feeding water to a main canal or serving purely as drainage systems or collecting runoff, the function of secondary canals is specifically focused on irrigation efficiency and crop support. They play a vital role in the overall irrigation infrastructure by facilitating the movement of water from the primary source to where it is needed most in agricultural contexts.