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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Page 26 of 51

www.spor 27 October 2017 // that compose the surrounding soil structure of a native soil fi eld. Calculations on our sand indicate that approximately 11,000 gallons of water is stored in the nearly 17 linear miles of micro-trenches installed on one full-size soccer fi eld. This represents about ¼ inch of excess rain or irrigation water that the fi eld will capture and hold in the trenches, slowly releasing it into the fi eld. This is water that could have been lost. During a heavy rain, excess water begins to fl ow down the slope of the fi eld. It is quickly intercepted and begins to fi ll the trenches. Once fi lled the water begins to move in two distinct ways. First, as long as it continues to rain, the trenches will carry excess water off the fi eld. Shortly after the rain stops water will stop entering the trenches. Once this happens the fl ow down the trench essentially ends and the water is held in the course sand of the trenches by capillary action. Second, is an unforeseen underlying benefi t that begins when the water is drawn into the fi eld by capillary action, when a liquid has an attraction to particles (sand, silt, and clay) and wants to wrap itself around them. Water wants to stay wrapped around a particle, until it is knocked off by a droplet of excess water or drawn towards another particle. At this point the sand trench is holding onto the water that is beginning to infi ltrate the fi eld. Soil surrounding the trench contains smaller particles of sand, silt, and clay, which have a stronger capillary attraction pulling the stored water out of the relatively large sand particles of the trench. Water will be passed from particle to particle into the rootzone, much like dominoes fall. Field drainage is so important because water that runs off a fi eld is lost; it is wasted, and worse yet may be loaded with nutrients that may never penetrate your rootzone. Micro-trenching is a great opportunity to put this water to use, solve slow drainage problems, drain puddles, and make your irrigation system more effi cient. It is recommended that most fi elds be redone every 5 years to maintain optimum water and air infl ow as well as provide extensive decompaction. If you performed this service six times during the lifespan of your fi eld you will have placed 700-800 tons of sand that can be blended into the soil and used as a good start for your next fi eld, or you may decide that the fi eld is performing well and a light renovation and replacement of the irrigation system is all that is needed. /ST/ "We had one of our two soccer fields, and one of our three baseball fields micro-trenched about 10 years ago. Today the fields that were treated outperform the others in turf growth and earlier green up even though they all receive approximately the same treatments." William Liming, Wamego Kansas Parks & Recreation Supervisor INTRODUCING SOL-Aer ® Winter Turf Blanket Unique non-woven fabric made of bi-component fibers combining a polypropylene core sheathed in polyethylene for ultra durability. Proven SILVER Lace Coating Fusion welded seams Can be moved and walked on without damaging blanket. Can be cut with zero fraying. Tighter-than-woven fabric lets sunlight, water, & air through but keeps insects out. Fabric is great insulator. Available with or without edging AND with or without Silver Lace Coating. • Pull handles on corners and every 10' all around Handles sewn onto 24 mil high tensile transfer strip Transfer strip is fusion welded to polyethylene body fabric. Result: Handles are sewn onto two layers of cover fabric. Edges reinforced w 2" seatbelt webbing (6,000 lb strength) Strongest cover in industry. PRO-Tector ™ Full Infield Cover AERFLO.COM 800-823-7356 SOLD BY BEST SPORTS DEALERS

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