SportsTurf

June 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.stma.org June 2017 | SportsTurf 11 The AVANT ATA 1200 Turf Cleaning Solution Keeping your sport surface properly maintained is essential for optimal playing conditions and extended turf life. The ATA 1200 gently and thoroughly sweeps turf fi bers while simultaneously cleaning, screening, and re-depositing infi ll back to the turf in a single pass removing course debris, fi ne particles, dust and broken fi bers that compromise the integrity of the entire sport surface. The Avant compact, articulating loader with the ATA 1200 makes fi eld maintenance fast, a• ordable and e• cient. To learn how the Avant ATA 1200 can help protect your turf investment, contact sales@avanttecnousa.com UP YOUR GAME Debris removed by the ATA 1200 for optimal playing conditions and extended gently and screening, and re-depositing infi ll particles, dust and broken fi bers that Debris removed by the ATA 1200 Debris www.AvantTecnoUSA.com AVT_012 Turf Ads v4-M.indd 1 11/7/16 3:50 PM limit bermudagrass growth. Similarly, less Fe, Cu and Zn are available for plant uptake at high soil pH levels. However, as the soil pH rises above 6.5, P and Mo may become more available to plants. The amount of lime needed to neutralize acids in a soil depends on the soil's pH, and the ability of the soil to resist or buffer against a change in pH. Clayey soils have a greater buffering capacity than sandy soils. If lime is recommended, the buffer pH (BpH) will appear on the soil test report along with the WpH. The BpH is a value generated in the laboratory in order to develop specific lime recommendations. Lime. Lime is available for turf applications in both pulverized and granular forms, and can be purchased in bulk quantities or in bags. Granular or pelletized lime with uniform particles is usually preferred when applying lime with a walk-behind or 3-point hitch, rotary spreader. Calcitic lime is manufactured by grinding rock containing large amounts of calcium carbonate, while rock with a combination of both calcium and magnesium carbonates is used to produce dolomitic limestone. Dolomitic limestone is often about 50 % calcium carbonate and about 40 % magnesium carbonate. Dolomitic limestone is usually recommended when both the soil pH and the available Mg level in the soil are low. Generally, no more than 50 lbs. of lime per 1,000 sq. ft. is recommended per application to established bermudagrass sports fields. However, if necessary, much more lime can be broadcast and tilled or disked into the soil before sprigs or seeds are planted. Soil test results. A soil test report provides information to assist in the selection and purchase of appropriate fertilizers. The results of a soil test performed at the University of Tennessee Soil, Plant and Pest Center are presented in the figure on page 12. The pH of this particular soil is 6.6 and no lime is needed at this time. A Mehlich 1 extractant solution was used to estimate the amounts of P, K, Ca, Mg, Zn, Cu, Fe, Mn and B, which are reported in pounds of nutrient per acre (lbs/A). Procedures to determine the amount of soil organic matter and the level of soluble salts were not The first step in developing effective and nutritionally balanced bermudagrass 'grow in' fertilization and liming plans is soil testing.

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