Do some pre-planning to check the initial operating parameters, furrow flow and set length. Here are some examples that can be used with the calculator that appears below. It is not runoff that is reapplied to the current set. Step 3 . You must have good DU before you can have good irrigation efficiency.
Water has to advance faster in lighter soils than in heavier.
Note that you don't necessarily want even water advance in all furrows. This may mean using a higher flow for a shorter time in non-wheel rows. If primarily cross the field, surge irrigation may help since surge acts to reduce infiltration rates quickly. Step 4 . Good distribution uniformity requires a fast water advance.