Switchgrass and Soil Carbon Sequestration Response to Ammonium Nitrate, Manure, and Harvest Frequency on Conservation Reserve Program Land

Lee, D. K.; Owens, Vance N.; Doolittle, James J.

doi:10.2134/agronj2006.0152

Cited by 152 publications

(94 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Switchgrass cropping systems can provide several environmental benefi ts compared to annual crops such as stabilizing soils and reducing soil erosion, improving water quality, increasing and improving wildlife habitat, and storing C to mitigate greenhouse gas emissions. 44,47,48 However, agronomic and operational aspects of switchgrass production systems must be developed and accepted by farmers. 50 Switchgrass fi ts well into the production systems of most farmers.…”

Section: Production Challengesmentioning

confidence: 99%

Managing and enhancing switchgrass as a bioenergy feedstock

Mitchell

Vogel

Sarath

2008

Biofuels Bioprod Bioref

165

129

View full text Add to dashboard Cite

The United States Department of Energy (DOE) has identifi ed switchgrass (Panicum virgatum L.) as a viable perennial herbaceous feedstock for cellulosic ethanol production. Although switchgrass bioenergy research was initiated by USDA-ARS, Lincoln, NE, USA in 1990, switchgrass research has been conducted at this location since the 1930s. Consequently, a signifi cant amount of genetic and agronomic research on switchgrass has been conducted for the Corn Belt and Central Great Plains of the USA that is directly applicable to its use as a biomass energy crop. Similar research must be conducted in other major agroecoregions to verify or modify switchgrass management practices (agronomics) for bioenergy production. The technology to utilize switchgrass for producing ethanol using a cellulosic platform or by pyrolysis to generate syngas is advancing rapidly. Regardless of platform, using switchgrass for ethanol production will require the development of improved bioenergy cultivars or hybrids and improved agronomics to optimize production and will introduce competing uses for the land base. Published in

show abstract

Section: Production Challengesmentioning

confidence: 99%

Managing and enhancing switchgrass as a bioenergy feedstock

Mitchell

Vogel

Sarath

2008

Biofuels Bioprod Bioref

165

129

View full text Add to dashboard Cite

show abstract

“…Perennial grasses such as switchgrass (Panicum virgatum L.) are known to sequester SOC [13][14][15][16][17], but the long-term effects of management practices such as N fertilization rate and harvest management on SOC sequestration by switchgrass are unknown. Perennial grasses could be used as bioenergy crops on about 20 million ha (ha010,000 m 2 ) of marginal or idle cropland in the USA alone [18].…”

Section: Introductionmentioning

confidence: 99%

Soil Carbon Sequestration by Switchgrass and No-Till Maize Grown for Bioenergy

et al. 2012

View full text Add to dashboard Cite

Net benefits of bioenergy crops, including maize and perennial grasses such as switchgrass, are a function of several factors including the soil organic carbon (SOC) sequestered by these crops. Life cycle assessments (LCA) for bioenergy crops have been conducted using models in which SOC information is usually from the top 30 to 40 cm. Information on the effects of crop management practices on SOC has been limited so LCA models have largely not included any management practice effects. In the first 9 years of a long-term C sequestration study in eastern Nebraska, USA, switchgrass and maize with best management practices had average annual increases in SOC per hectare that exceed 2 Mg Cyear −1 (7.3 Mg CO 2 year −1 ) for the 0 to 150 soil depth. For both switchgrass and maize, over 50 % of the increase in SOC was below the 30 cm depth. SOC sequestration by switchgrass was twofold to fourfold greater than that used in models to date which also assumed no SOC sequestration by maize. The results indicate that N fertilizer rates and harvest management regimes can affect the magnitude of SOC sequestration. The use of uniform soil C effects for bioenergy crops from sampling depths of 30 to 40 cm across agro-ecoregions for large scale LCA is questionable.

show abstract

“…It offers a number of distinct benefits to many annual row crops including broad adaptation, improved soil conservation and quality [13,20], reduced greenhouse gas emissions [19], and carbon sequestration [6,13,16,17,26]. In particular, it has high yield potential on land marginal to row crop production [23].…”

Section: Introductionmentioning

confidence: 99%

Switchgrass Response to Nitrogen Fertilizer Across Diverse Environments in the USA: a Regional Feedstock Partnership Report

et al. 2014

Self Cite

View full text Add to dashboard Cite

The Regional Feedstock Partnership is a collaborative effort between the Sun Grant Initiative (through Land Grant Universities), the US Department of Energy, and the US Department of Agriculture. One segment of this partnership is the field-scale evaluation of switchgrass (Panicum virgatum L.) in diverse sites across the USA. Switchgrass was planted (11.2 kg PLS ha −1 ) in replicated plots in New York, Oklahoma, South Dakota, and Virginia in 2008 and in Iowa in 2009. Adapted switchgrass cultivars were selected for each location and baseline soil samples collected before planting. Nitrogen fertilizer (0, 56, and 112 kg N ha −1 ) was applied each spring beginning the year after planting, and switchgrass was harvested once annually after senescence. Establishment, management, and harvest operations were completed using fieldscale equipment. Switchgrass production ranged from 2 to 11.5 Mg ha −1 across locations and years. Yields were lowest the first year after establishment. Switchgrass responded positively to N in 6 of 19 location/year combinations and there was one location/year combination (NY in Year 2) where a significant negative response was noted. Initial soil N levels were lowest in SD and VA (significant N response) and highest at the other three locations (no N response). Although N rate affected some measures of biomass quality (N and hemicellulose), location and year had greater overall effects on all quality parameters evaluated. These results demonstrate the importance of local field-scale research and of proper N management in order to reduce unnecessary expense and potential environmental impacts of switchgrass grown for bioenergy.

show abstract

Switchgrass and Soil Carbon Sequestration Response to Ammonium Nitrate, Manure, and Harvest Frequency on Conservation Reserve Program Land

Cited by 152 publications

References 24 publications

Managing and enhancing switchgrass as a bioenergy feedstock

Managing and enhancing switchgrass as a bioenergy feedstock

Soil Carbon Sequestration by Switchgrass and No-Till Maize Grown for Bioenergy

Switchgrass Response to Nitrogen Fertilizer Across Diverse Environments in the USA: a Regional Feedstock Partnership Report

Contact Info

Product

Resources

About