SportsTurf

October 2017

SportsTurf provides current, practical and technical content on issues relevant to sports turf managers, including facilities managers. Most readers are athletic field managers from the professional level through parks and recreation, universities.

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www.spor tsturfonline.com 25 October 2017 // Each knife is positioned on the shaft so that only one penetrates the ground at a time. The way they enter the ground sets up a wave action, a back and forth motion of the soil between the blades across the entire width of the machine. The "rhythmic wave action" in the soil is important to the underlying benefi t of the micro-trenching process, but the real action happens on the back side of the rotation when the knives begin to rotate up and out of the soil. The entire 10-ich thick section of soil between the knives is being rocked back-and-forth, lifted up, stretched and pulled which loosens and fractures the entire soil profi le as the knives exit the ground. We have found that the surface of a fi eld rises approximately 1 inch after micro-trenching. This type of decompaction is referred to as "vertical linear de-compaction." The complete soil profi le is "fragmented" bot vertically and horizontally. LEE'S SUMMIT AMPHITHEATER Lee's Summit's Amphitheater was micro trenched in the spring of 2017. This year was a good year to see how the micro trenching worked with the large amounts of rainfall we had throughout the summer. All the runoff for this site drains to the bottom of the amphitheater and would pool up. We have one main drain line that was installed during the construction of the amphitheater, but the compaction was so bad that the water was not moving through the soil to get to the drain. The Micro-Trenching allowed for the water to leach through the soil to the main drain. This site would have been in standing water after a three-inch rain, but now, within a few hours after the rain stops it is free of standing water. I was impressed with how well it worked."-Andy Carr, Legacy Park Supervisor, Lee's Summit, Missouri Parks and Recreation Department MICRO-TRENCHING Installs quickly with no messy clean up to keep you off your field. Installation can be done directly over existing irrigation Gets excess water off the field faster Drains puddles and low-lying areas. Lets you get on the field faster after a rain event. Creates trenches that can store up to 11,000 gallons of water to be absorbed into your fields slowly over time. Provides an avenue for air, water, and nutrients to permeate into your field. Gives the turf deeper root penetration and increased root mass for a more robust turf. Gives you more durable fields that hold up better under stress and recover faster. Provides compaction relief.

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