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ARS Home » Southeast Area » Auburn, Alabama » Soil Dynamics Research » Research » Publications at this Location » Publication #381073
Research Project: GxExM Systems Approach to Crop Disease Management

Location: Soil Dynamics Research

Title: Genotypic variation in NUE among carinata genotypes differing in seed yield

Author
item IBOYI, JOSEPH - University Of Florida
item MULVANEY, MICHAEL - University Of Florida
item SMALL, IAN - University Of Florida
item BASHYAL, MAHESH - University Of Florida
item LEON, RAMON - North Carolina State University
item Balkcom, Kipling
item DEVKOTA, PRATAP - University Of Florida

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 11/12/2020
Publication Date: 12/15/2020
Citation: Iboyi, J.E., Mulvaney, M.J., Small, I.M., Bashyal, M., Leon, R.G., Balkcom, K.S., Devkota, P. 2020. Genotypic variation in NUE among carinata genotypes differing in seed yield [abstract]. ASA-CSSA-SSSA International Meeting.

Interpretive Summary:

Technical Abstract: Brassica carinata is an alternative non-food oilseed crop that has received attention for its potential as a low-input biofuel feedstock suitable for production in the southeastern United States. Maximizing yield for commercial production of Brassica carinata in the 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 or high N utilization efficiency, or both. A field study was conducted in Jay FL to quantify genotypic variation in NUE and its components among 16 carinata genotypes under contrasting N supplies (0 kg N ha-1, 45 kg N ha-1, and 90 kg N ha-1) during 2019/2020 growing season. A randomized complete block design with a split plot restriction on randomization with four replications was implemented. Preliminary results from this trial will be presented.