What is the term for the spacing of irrigation heads that corresponds to the published radius of the head?

The term for the spacing of irrigation heads that corresponds to the published radius of the head is indeed equal to the published radius of the head. This concept is critical in irrigation design because the effective coverage of each irrigation head is determined by its radius, which reflects the distance water can be reliably projected from the head.

By spacing the irrigation heads according to this published radius, you ensure that there is adequate overlap between the patterns of different heads, providing uniform coverage and reducing the risk of dry spots in the irrigated area. This practice improves irrigation efficiency and optimizes water usage, which is particularly important in regions like Texas where water conservation is a significant concern.

The other options suggest different percentages of the diameter, which do not align with standard irrigation practices related to head spacing; using the published radius ensures maximum efficiency in achieving the intended coverage.