Withers, K.K., and K.D. Thelen
Presented at the GLBRC Sustainability Retreat (2010-02-10 to 2010-02-12 )
Economically viable production of switchgrass (Panicum virgatum L.) as a bioenergy feedstock requires successful stand establishment. Establishment can be severely hampered by grassy weed pressure and poor germination from unsuitable environmental conditions or inherent seed dormancy. A field experiment was conducted with the “Cave-in-rock” switchgrass cultivar at two sites at the East Lansing Field Research Facilities (42.75N -84.47W) in Michigan. The objective of this study was to determine the most suitable planting date (early, mid, or late spring) and seeding methodology to ensure successful establishment and high yields in consequent production years. Seeding methodologies being examined are no-till drilled, conventionally drilled and conventionally tilled and planted with a Brillion seeder followed by a sheep’s foot packer. Switchgrass yields were highest when conventionally tilled and planted in mid-spring.
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