Sometimes Black Layers Can Be Good

By Larry Gilhuly, Northwest Director
March 11, 2010

The use of a check plot demonstrates the use of black sand and its impact on green-up. 

The damage done to greens last summer and this winter has been well documented in regional updates, webcasts (https://www.livemeeting.com/cc/usga/view?id=CDP6H3), and local golf publications. Progress is being made at some golf courses with a material to help greens recover from winter damage – black sand. Before the preliminary results are discussed, some background information is needed.

Researchers have shown that the use of properly-sized USGA sand can warm the putting green surface in a manner similar to turf covers. When combined with covers, the temperature increase at the turf canopy is even more dramatic. Also, for courses with ice coverage or extended snow coverage, the advantages of using an inert, dark material to rapidly remove snow and ice have been documented. But what about Poa annua-dominated greens found in a much milder climate? Will black sand improve the recovery on greens, or simply be a waste of money with covers remaining the best answer? Based on what has happened at two golf courses in British Columbia and Oregon, the use of black sand as a recovery enhancer deserves a close look for courses that still have weakened greens.

Marine Drive Golf Club is located in the lower mainland of British Columbia, with a mild climate similar to Washington and Oregon. Their greens took a major hit this winter, with natural recovery starting in late January-early February from the ongoing El Nino weather pattern. In early February, they decided to "jump-start" their greens with the application of 300 lbs./1000 sq. ft. of black sand from a source in Idaho, and they seeded bentgrass after spiking. When discussing the use of this product, Superintendent Wade Hawksworth was very positive about the money spent, and sees the additional benefit of smoothing the Poa annua surfaces. Thus far, the results have been very good, with the membership observing a very visual effort to improve the greens. Wade estimates that he will open several greens at least two to three weeks earlier than if the darkening agent was not used.

Another example is Illahe Hills Country Club, located in Salem, Oregon at the northern part of the Willamette Valley. As with his counterpart to the north, Superintendent Bill Swancutt applied black sand (400 lbs./M) on some of his worst areas, and he also had the foresight to place a piece of plywood down before sand application. The photo shows the distinct difference in color and regrowth compared to the grass under the plywood-covered check plot. Mr. Swancutt reports an expected two-week faster recovery of his worst greens.

These examples do not in any way imply that turf covers should be discarded in the recovery process. Marine Drive GC used both covers and black sand on some of their worst greens with even better results, while many other golf courses in western Oregon and Washington have had very good recovery with covers only. However, for courses that may have only a portion of a green that is damaged, and they do not wish to deal with how covers will impact play, the use of black sand offers another way to enhance recovery without daily cover removal and replacement. For superintendents facing a similar situation, this may be the first time that "black layer" has ever been discussed in a positive light.

Source: Larry Gilhuly, lgilhuly@usga.org or 253-858-2266

Partner Links
AmEx image
AmEx image
AmEx image
AmEx image
Chevron
   

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.

Chevron image
Rolex
   

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.

As the official timekeeper of the USGA and its championships, they also provide clocks throughout host sites for spectator convenience.

For more information on Rolex and their celebration of the game, visit the Rolex and Golf homepage.



Rolex image
IBM
   

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.

IBM provides the information technology to develop and host the U.S. Open’s official website, www.usopen.com, as well as the mobile apps and scoring systems for the three U.S. Open championships. These real-time technology solutions provide an enhanced experience for fans following the championship onsite and online.

For more information on IBM and the technology that powers the U.S. Open and businesses worldwide, visit http://www.usopen.com/IBM

AmEx image
Lexus
   

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.

At each U.S. Open, Women’s Open and Senior Open, Lexus provides spectators with access to unique experiences ranging from the opportunity to have a picture taken with both the U.S. Open and U.S. Women’s Open trophies to autograph signings with legendary Lexus Golf Ambassadors in the Lexus Performance Drive Pavilion.

For more information on Lexus, visit http://www.lexus.com/

AmEx image
American Express
   

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.

For more information on American Express visit www.americanexpress.com/entertainment


AmEx image