David J. Parrish

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Field studies were conducted in 2000 and 2001 to examine yields and nutrient removal by Alamo switchgrass (Panicum virgatum L.) grown at eight locations within five states in the upper southeastern USA. Plots, which had been established for >5 years as part of a larger study, were cut either once (late fall) or twice (midsummer and late fall). Plots cut(More)
This work examines N use by switchgrass (Panicum virgatum L.). A study was conducted on two well-established ‘Cave-in-Rock’ switchgrass stands in Blacksburg (37° 11′ N, 80° 25′ W) and Orange (38° 13′ N, 78° 07′ W) Virginia, USA. Plots were fertilized in 2001 (year 1) with 0, 90, 180, or 270 kg N per hectare. No additional N was applied in 2002 (year 2) and(More)
Switchgrass is being widely considered as a feedstock for biofuel production. Much remains to be learned about ideal feedstock characteristics, but switchgrass offers many advantages already and can perhaps be manipulated to offer more. When planning to grow switchgrass, select a cultivar that is well adapted to the location - generally a lowland cultivar(More)
In the next quarter-century, global demand for energy is expected to increase more than 25%, while some analysts are predicting that output of petroleum will soon peak. This reality of increasing demand in the face of diminishing fossil supplies is spurring interest in renewable energy sources. An array of biomass-for-bioenergy resources has been proposed,(More)
Switchgrass (Panicum virgatum L.), a perennial warm-season grass indigenous to the eastern USA, has potential as a biofuels feedstock. The objective of this study was to investigate the performance of upland and lowland switchgrass cultivars under different environments and management treatments. Four cultivars of switchgrass were evaluated from 2000 to(More)
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