Experts Explain

Is it better to irrigate light and frequent or deep and infrequent?


Both irrigation practices are commonly used and will provide quality playing conditions. Generally, light, daily or frequent irrigation keeps the top one to three inches of the soil moist, while deep, infrequent irrigation waits for signs of the grass wilting before applying enough irrigation to wet the soil to a depth of 10 inches or more. Light frequent irrigation provides a healthy looking turfgrass; however, at the expense of the grass plant developing a deep root system. A study at the University of Maryland found creeping bentgrass subjected to deep infrequent irrigation developed less thatch and organic matter than was found in light frequent irrigated plots. Deep, infrequent irrigation produced a greater number of roots, longer roots and a larger root surface area that helped the turfgrass during periods of higher temperatures. Slightly more than twice the amount of water was applied to the light frequent versus deep infrequent irrigated plots.

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The USGA and Chevron have committed to using the game of golf to encourage students in science, technology, engineering and math (STEM) disciplines. This commitment has led to the creation of extensive golf-focused STEM teaching tools, and has resulted in charitable contributions to support golf-related programs through Eagles for Education™

At U.S. Open Championships the Chevron STEM ZONE™ is an interactive experience highlighting the science and math behind the game of golf through a variety of hands-on exhibits and experiments.

The partnership has also produced educational materials such as the Science of Golf video series and a nationally-distributed newspaper insert which are provided to teachers as tools to enhance existing curriculum in schools. These lessons teach the science behind the USGA’s equipment testing, handicapping, and agronomy efforts.

For more interactive experiences featuring golf-focused STEM lessons, visit the partnership homepage.

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Rolex has been a longtime supporter of the USGA and salutes the sportsmanship and great traditions unique to the game. This support includes the Rules of Golf where Rolex has partnered with the USGA to ensure golfers understand and appreciate the game.

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IBM has partnered with the USGA to bring the same technology, expertise, and innovation it provides to businesses all over the world to the USGA and golf's national championship.

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Lexus is committed to partnering with the USGA to deliver a best-in-class experience for the world’s best golfers by providing a fleet of courtesy luxury vehicles for all USGA Championships.

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Together, American Express and the USGA have been providing world-class service to golf fans since 2006. By creating interactive U.S. Open experiences both onsite and online, American Express enhances the USGA’s effort to make the game more accessible and enjoyable for fans.

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