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Article

Perennial Ryegrass Wear Resistance and Soil Amendment by Ca- and Mg-Silicates

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.
Agronomy 2019, 9(10), 578; https://doi.org/10.3390/agronomy9100578
Received: 8 September 2019 / Revised: 21 September 2019 / Accepted: 23 September 2019 / Published: 25 September 2019
(This article belongs to the Section Soil and Plant Nutrition)
Proactive optimization of soil chemistry is a task commonly overlooked by agronomic practitioners. Agricultural field assessments have reported depletion of extractable soil silicon (Si) from shallow depths of intensively managed systems. While not recognized as a plant-essential nutrient, Si accumulates in epidermal and vascular tissue of grass leaves, sheaths, and shoots. A field study of Ca/Mg-silicate (SiO3) pelletized soil conditioner was initiated on a perennial ryegrass (Lolium perenne L. cvs. 1:1:1 Manhattan, Brightstar SLT, Mach 1) athletic field in 2010. Plots were trafficked by a wear simulator weekly, June through Sept. in 2011 and 2012. Canopy quality measures, clipping yield, tissue composition, soil pH, and plant-available soil Si levels were regularly collected over the two-year study. Under intense wear treatment (traffic), perennial ryegrass plots treated annually by granular application of 1220 or 2440 kg Ca/Mg-silicates per hectare showed significantly improved mean canopy density relative to plots receiving equal Ca and Mg as lime. These described Ca/Mg-SiO3 annual application rates coincided with acetic acid extractable soil Si levels > 70 mg kg−1 in the 0- to 8-cm soil depth. Experimental and temporal variability preclude reporting of a critical threshold concentration of leaf Si for improved perennial ryegrass wear tolerance. Future efforts towards this end should sample tissue of plots receiving wear treatment, rather than adjacent, non-worn proxies. View Full-Text
Keywords: Abiotic stress; Crossover; Sports field; Traffic; Turfgrass Abiotic stress; Crossover; Sports field; Traffic; Turfgrass
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MDPI and ACS Style

Pruyne, D.T.; Schlossberg, M.J.; Uddin, W. Perennial Ryegrass Wear Resistance and Soil Amendment by Ca- and Mg-Silicates. Agronomy 2019, 9, 578. https://doi.org/10.3390/agronomy9100578

AMA Style

Pruyne DT, Schlossberg MJ, Uddin W. Perennial Ryegrass Wear Resistance and Soil Amendment by Ca- and Mg-Silicates. Agronomy. 2019; 9(10):578. https://doi.org/10.3390/agronomy9100578

Chicago/Turabian Style

Pruyne, Derek T., Maxim J. Schlossberg, and Wakar Uddin. 2019. "Perennial Ryegrass Wear Resistance and Soil Amendment by Ca- and Mg-Silicates" Agronomy 9, no. 10: 578. https://doi.org/10.3390/agronomy9100578

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