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ARS Home » Southeast Area » Auburn, Alabama » Soil Dynamics Research » Research » Publications at this Location » Publication #360827

Research Project: Conservation Systems to Improve Production Efficiency, Reduce Risk, and Promote Sustainability

Location: Soil Dynamics Research

Title: Should seeding rate change under different land preparation methods of brassica carinata?

item MULVANEY, MICHAEL - University Of Florida
item Balkcom, Kipling

Submitted to: American Society of Agronomy Branch Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 2/1/2019
Publication Date: 2/6/2019
Citation: Mulvaney, M.J., Balkcom, K.S. 2019. Should seeding rate change under different land preparation methods of brassica carinata? [abstract]. Southern Branch American Society of Agronomy Meeting. CDROM.

Interpretive Summary:

Technical Abstract: Brassica carinata is a non-food oilseed crop used for the production of jet fuel in the US and abroad. Its production in the Southeastern US is relatively new and basic agronomic cultural practices for successful establishment are required. Since land preparation may affect the optimal seeding rate for this small-seeded crop, an experiment was conducted to evaluate carinata growth and yield performance under different tillage and seeding rate scenarios. A randomized complete block strip-plot design with four replications was implemented in Shorter, AL and Jay, FL during the 2017-18 growing season. Tillage (main plots, n=3) treatments were conventional tillage (chisel disc, field cultivate), ripper-roller (no-till drilled, then ripped and rolled), and no-till drill. Seeding rates were 1, 5, 9, and 13 lbs seed per acre. Preliminary results indicated that stalk diameter decreased with increasing seeding rate. Total biomass tended to be higher at lower seeding rates. Yield was optimized at 5 lbs/ac regardless of land preparation method.