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The Center for Native Grasslands Management

Title: Yield comparisons of new switchgrass varieties with Alamo and Kanlow
Year: 2010
Author(s): Allen, F., Johnson, R., Zale, J.
Source Title:
Source Type: Proceedings
pages: 34
Original Publication:  
Abstract: Interest in switchgrass (Panicum virgatum) as a feedstock for biofuels and other bio‐products continues to grow. Tennessee has approximately 5100 planted acres of ‘Alamo’ switchgrass for those intended purposes. As the bioenergy industry grows there will be increased demand for higher yielding and better quality varieties. Recently, new varieties and experimental lines have been produced from breeding programs in GA and OK. The objective of this research is to compare the yields of some new varieties and experimental lines with older varieties. Nine lowland ecotypes: ‘Alamo’ (USDA-TX), ‘Alamo’ (Bammert Seed, TX), ‘Kanlow’, ‘Cimarron’(OSU), OK NSL-­2001-­1 (OSU), Blade EG 1101(GA993), Blade EG 1102 (GA 992), C75, C77 (Noble Foundation, OK) and three upland ecotypes: ‘Blackwell’, Hoop House’, and C62 were planted at the East Tennessee Research and Education Center (ETREC) in Knoxville. Eight of the twelve (Blade varieties, USDA source of Alamo, Hoop House were excluded) were also planted at the Highland Rim Research and Education Center (HRREC) at Springfield, TN. The tests at both locations were seeded in late May, 2007. The experiments were conducted in a randomized complete block design with three replications at both location in plot sizes of 4 ft x 25 ft (ETREC)or 5 ft x 30 ft (HRREC). Plots were harvested according to a one‐cut system in November, 2007‐2009. Results indicate that some of the new varieties and experimental lines are higher yielding than Alamo and Kanlow. Furthermore, the lowland ecotypes are higher yielding than the uplands, as reported previously by other researchers.
Publisher: Proceedings of the Seventh Eastern Native Grass Symposium. Knoxville, TN, October 5-8, 2010
Editor(s): C. Harper