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Switchgrass Forage Yield and Compositional Response to Phosphorus and Potassium

Switchgrass Forage Yield and Compositional Response to Phosphorus and Potassium AbbreviationsADFacid detergent fiberCPcrude proteinICP‐OESinductively coupled plasma–optical emission spectroscopyLSDLeast Significant DifferenceMMAOVmixed model analysis of varianceNDFneutral detergent fiberNRCSNatural Resources Conservation ServiceTDNtotal digestible nutrientsEssential macronutrients such as P and K are important for cell growth and expansion and are later used during photosynthesis, reproduction, and stress adaptation (McLaughlin et al., 1999; Sanderson et al., 1996). Phosphorus is estimated to limit plant growth in 40% of the world's arable soils, as it is a constituent of nucleic acids, which are critical for energy compound synthesis such as adenosine triphosphate (Vance, 2001; Marschner, 1995). In addition, P and K content in forages impact their digestibility, as these nutrients are required for the transfer of carbohydrates (Ashworth et al., 2016, 2017). Therefore, expected increases in food demands coupled with peak P make the conservative use of fertilizer P (i.e., phosphate rock) important while maintaining yields and forage characteristics on marginal soils (Cordell et al., 2009).Switchgrass (Panicum virgatum L.), a native warm‐season perennial grass, is efficient at converting mineral nutrients to harvestable plant tissue with low nutrient removal rates (Vogel et al., 2002); however, scant data exists on optimum P and K applications under multiple forage harvests per annum. Peak P and K removal for switchgrass http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Agrosystems, Geosciences & Environment" Wiley

Switchgrass Forage Yield and Compositional Response to Phosphorus and Potassium

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References (37)

Publisher
Wiley
Copyright
© American Society of Agronomy
eISSN
2639-6696
DOI
10.2134/age2019.02.0010
Publisher site
See Article on Publisher Site

Abstract

AbbreviationsADFacid detergent fiberCPcrude proteinICP‐OESinductively coupled plasma–optical emission spectroscopyLSDLeast Significant DifferenceMMAOVmixed model analysis of varianceNDFneutral detergent fiberNRCSNatural Resources Conservation ServiceTDNtotal digestible nutrientsEssential macronutrients such as P and K are important for cell growth and expansion and are later used during photosynthesis, reproduction, and stress adaptation (McLaughlin et al., 1999; Sanderson et al., 1996). Phosphorus is estimated to limit plant growth in 40% of the world's arable soils, as it is a constituent of nucleic acids, which are critical for energy compound synthesis such as adenosine triphosphate (Vance, 2001; Marschner, 1995). In addition, P and K content in forages impact their digestibility, as these nutrients are required for the transfer of carbohydrates (Ashworth et al., 2016, 2017). Therefore, expected increases in food demands coupled with peak P make the conservative use of fertilizer P (i.e., phosphate rock) important while maintaining yields and forage characteristics on marginal soils (Cordell et al., 2009).Switchgrass (Panicum virgatum L.), a native warm‐season perennial grass, is efficient at converting mineral nutrients to harvestable plant tissue with low nutrient removal rates (Vogel et al., 2002); however, scant data exists on optimum P and K applications under multiple forage harvests per annum. Peak P and K removal for switchgrass

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"Agrosystems, Geosciences & Environment" – Wiley

Published: Jan 1, 2019

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