Kansas Center Pivots: Pressure, Regulators and Nozzle Checks per K-State Extension

K-State Research and Extension news item (March 4, 2025, Kelsey Stremel), quoting water resource engineer Jonathan Aguilar. Only stated points are included.

Key points from the page

Irrigated acres in western Kansas (not statewide) have fallen by nearly 11% since 1989. The article attributes to unnamed "experts" that optimizing systems can cut water waste by up to 25% while maintaining or improving yields.
Aguilar estimates, from field evaluations, that more than 50% of Kansas irrigation systems are not running at peak efficiency. Named problems: worn pressure regulators, uneven distribution, outdated scheduling.
Low operating pressure is called one of the most common issues. A 10 PSI drop can reduce application uniformity by 30%. Pressure should be checked at the pivot point and at the last nozzle.
Pressure regulators should be replaced every 5-10 years. Nozzles should be checked for misalignment or blockage.
Before planting, compare actual flow and pressure readings with the original sprinkler package design, and schedule regular inspections.
A distribution uniformity test uses measuring cups placed along the pivot's path.
Soil moisture sensors and weather-based scheduling can reduce irrigation by 15-20% while maintaining yields, per the article.
Pivot speed should apply 0.8 to 1.2 inches per pass.
Help named: USDA NRCS technical service providers, K-State irrigation specialists, the K-State Mobile Irrigation Lab, and local Extension offices.

Not verified: the article does not discuss pumps; pump sizing, Kansas water rights and well permits were not read.

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