As planting season begins, producers begin to start up irrigation systems that have been idle since fall. Taking the time to inspect these irrigation systems is crucial, according to Laxmi Prasad, North Dakota State University Extension water engineer.

Winter snowstorms and prolonged downtime may have caused some damage. A thorough visual inspection of the system before using it for the growing season may help identify damages, avoid hazards and minimize costly repairs later.

The most common problem at startup is rodent damage to electric control boxes. Rodents often chew through electrical wires, causing damage to internal components. Such damage may not be visible externally, but it poses risks like short-circuiting or exploding when the system is activated, potentially injuring anyone standing nearby.

The operational vibrations during the growing season and freeze-thaw cycles during winter and spring can loosen bolts, nuts or screws, especially on electrical components or wire fasteners.

“These issues can result in poor connections or wires touching grounded surfaces, increasing the risk of system failure or electrical shock,” says Prasad.

Before turning on the irrigation system, take the following precautions:

• Inspect all electric control panels, including pivot control panels and tower boxes, to check for rodent nests, chewed wires, corrosion and loose connectors.
• Inspect electric motors and phase converters to confirm that protective screens are in place, and look for exposed wires and missing parts.
• Seal all entry points — if you detect rodent damage, trace the entry route often through motor conduits and plug it to prevent future nesting.

For more information on irrigation systems and management, visit ndsu.ag/irrigatemgmt.

NDSU Agriculture Communication – May 30, 2025

Source: Laxmi Prasad, 701-231-4190, laxmi.prasad@ndsu.edu

Editor: Dominic Erickson, 701-231-5546, dominic.erickson@ndsu.edu