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Short‐Term Effects of Cover Crops on Soil Microbial Characteristics and Biogeochemical Processes across Actively Managed Farms

Short‐Term Effects of Cover Crops on Soil Microbial Characteristics and Biogeochemical Processes... AbbreviationsCFEchloroform fumigation extractionDOCdissolved organic carbonDONdissolved organic nitrogenSIRsubstrate‐induced respirationSOMsoil organic matterWHCwater holding capacityCroplands make up ∼20% of total land area in the United States, representing a significant source of revenue and food production (Bigelow and Borchers, 2017). However, the soil associated with these croplands is often either degraded or under threat of degradation (Lal, 1997, 2002). In fact, intensive agriculture is associated with increased rates of soil erosion (USDA–NRCS, 2010), increased nutrient runoff (Tilman et al., 2002), and decreased diversity of soil faunal communities (Tsiafouli et al., 2015). With a growing human population demanding even more agricultural intensification, efforts must be used that will lead to adequate food production while staving off soil degradation. To accomplish this, many agricultural management techniques (e.g., no‐till management) have been suggested (Moebius‐Clune et al., 2016). The use of cover crops (i.e., the planting of non‐cash crops during the fallow period) is one such technique that has recently grown in popularity (CTIC, 2017).Cover cropping is expected to lead to more sustainable agricultural practices by mitigating the negative effects of agricultural practices on soils (CTIC, 2017; Dabney et al., 2001). Specifically, cover crop regimes have been found to reduce soil erosion and increase nutrient retention (Dabney http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Agrosystems, Geosciences & Environment" Wiley

Short‐Term Effects of Cover Crops on Soil Microbial Characteristics and Biogeochemical Processes across Actively Managed Farms

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Wiley
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© American Society of Agronomy
eISSN
2639-6696
DOI
10.2134/age2018.12.0064
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Abstract

AbbreviationsCFEchloroform fumigation extractionDOCdissolved organic carbonDONdissolved organic nitrogenSIRsubstrate‐induced respirationSOMsoil organic matterWHCwater holding capacityCroplands make up ∼20% of total land area in the United States, representing a significant source of revenue and food production (Bigelow and Borchers, 2017). However, the soil associated with these croplands is often either degraded or under threat of degradation (Lal, 1997, 2002). In fact, intensive agriculture is associated with increased rates of soil erosion (USDA–NRCS, 2010), increased nutrient runoff (Tilman et al., 2002), and decreased diversity of soil faunal communities (Tsiafouli et al., 2015). With a growing human population demanding even more agricultural intensification, efforts must be used that will lead to adequate food production while staving off soil degradation. To accomplish this, many agricultural management techniques (e.g., no‐till management) have been suggested (Moebius‐Clune et al., 2016). The use of cover crops (i.e., the planting of non‐cash crops during the fallow period) is one such technique that has recently grown in popularity (CTIC, 2017).Cover cropping is expected to lead to more sustainable agricultural practices by mitigating the negative effects of agricultural practices on soils (CTIC, 2017; Dabney et al., 2001). Specifically, cover crop regimes have been found to reduce soil erosion and increase nutrient retention (Dabney

Journal

"Agrosystems, Geosciences & Environment" – Wiley

Published: Jan 1, 2019

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