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Open AccessArticle

Creeping Bentgrass Fairway Wear Resistance by Granular Topdressing of Ca/Mg-rich Liming Agents

1
Center for Turfgrass Science, Penn State University, University Park, PA 16802, USA
2
Department of Plant Pathology & Environmental Microbiology, Penn State University, University Park, PA 16802, USA
*
Author to whom correspondence should be addressed.
Agriculture 2020, 10(2), 43; https://doi.org/10.3390/agriculture10020043
Received: 4 December 2019 / Revised: 16 January 2020 / Accepted: 12 February 2020 / Published: 14 February 2020
Depletion of extractable silicon (Si) from surface soil depths has been observed in managed production systems. While not characterized as a plant essential nutrient, Si accrues in epidermal and vascular tissue of monocotyledonous plants. A field evaluation of granular Ca/Mg-rich liming agents was initiated on a creeping bentgrass (Agrostis stolonifera L. cv. Declaration) fairway in 2010. Excluding the control, treatments comprised 2440 kg (ha year)−1 topdressing of calcitic/dolomitic blended limestone or Ca/Mg-SiO3 in semi-annual or more frequent “split” applications. Each week of the 2011 and 2012 growing seasons, a dedicated wear simulator trafficked the fairway plots. Measures of canopy quality, clipping yield, tissue composition, soil pH, and plant-available soil Si levels were collected frequently. The described Ca/Mg-SiO3 annual topdressing rates correlated with acetic acid extractable Si levels >30 mg kg−1 in the 0- to 5-cm soil depth. Neither creeping bentgrass vigor, nutrition, nor leaf water content was influenced by significantly elevated levels of soil and tissue Si. Relative to non-trafficked plots, all split plots within trafficked main plots showed similarly reduced canopy quality regardless of topdressing treatment. If a critical threshold leaf Si concentration for creeping bentgrass wear tolerance enhancement exists, it is unlikely <11 g Si kg−1. View Full-Text
Keywords: abiotic stress; silicates; silicon offtake; traffic; turfgrass abiotic stress; silicates; silicon offtake; traffic; turfgrass
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MDPI and ACS Style

Pruyne, D.T.; Schlossberg, M.J.; Uddin, W. Creeping Bentgrass Fairway Wear Resistance by Granular Topdressing of Ca/Mg-rich Liming Agents. Agriculture 2020, 10, 43.

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