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ARS Home » Southeast Area » Auburn, Alabama » Soil Dynamics Research » Research » Publications at this Location » Publication #411194
Research Project: Agronomic and Engineering Solutions for Conventional and Organic Conservation Agricultural Systems in the Southeastern U.S.

Location: Soil Dynamics Research

Title: Nitrogen use efficiency in carinata

Author
item IBOYI, JOSEPH - University Of Florida
item MULVANEY, MICHAEL - Mississippi State University
item LEON, RAMON - North Carolina State University
item BASHYAL, MAHESH - University Of Florida
item DARAMOLA, OLUMIDE - University Of Florida
item Balkcom, Kipling
item SMALL, IAN - University Of Florida
item GEORGE, SHEEJA - University Of Florida
item WRIGHT, DAVID - University Of Florida

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 10/25/2023
Publication Date: 11/2/2023
Citation: Iboyi, J.E., Mulvaney, M.J., Leon, R.G., Bashyal, M., Daramola, O.S., Balkcom, K.S., Small, I.M., George, S., Wright, D.L. 2023. Nitrogen use efficiency in carinata [ABSTRACT]. 2023 ASA-CSSA-SSSA International Meeting Oct. 29 - Nov. 1, 2023.

Interpretive Summary:

Technical Abstract: Brassica carinata, an alternative non-food oilseed crop, is used to produce aviation biofuels due to its high oil content and favorable fatty acid profile. Maximizing yield for commercial production of Brassica carinata in the southeast United States (SE US) requires management of soil nitrogen (N) availability, the quantitatively most important nutrient required for crop growth which is insufficient in soils of the SE US and must be supplied as fertilizer. To ensure the competitiveness of Brassica carinata at agronomic, environmental, and economic levels, it is necessary to develop carinata cultivars with improved N stress tolerance and high seed and oil yield under low soil N availability. This involves identifying carinata genotypes with superior nitrogen use efficiency (NUE), either by possessing a high N uptake efficiency (NUpE) or high N utilization efficiency (NUtE), or both. A greenhouse study was conducted in Quincy FL to quantify genotypic variation in NUE and identify N efficient genotypes indicators during the 2019/2020 growing season. Seed yield, biomass, NUE, NUpE, and NUtE were compared among 16 carinata genotypes under contrasting N supplies. Preliminary results from this trial will be presented.