Evaluation of NEXEN™ stabilized nitrogen applied to overhead irrigated cotton (Gossypium hirsutum L.)
Paper
Paper/Presentation Title | Evaluation of NEXEN™ stabilized nitrogen applied to overhead irrigated cotton (Gossypium hirsutum L.) |
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Presentation Type | Paper |
Authors | Antille, Diogenes L. (Author), Nguyen-Ky, Tai (Author), Aikins, Kojo Atta (Author), Hussein, Mahmood A. H. (Author), Singh, Sawtenterpreet (Author), Luhaib, Adnan A. A (Author) and Singh, Amrit (Author) |
Journal or Proceedings Title | ASABE Annual Meeting Papers 2018 |
Article Number | 180052 |
Number of Pages | 12 |
Year | 2018 |
Place of Publication | United States |
Digital Object Identifier (DOI) | https://doi.org/10.13031/aim.201800252 |
Web Address (URL) of Paper | https://elibrary.asabe.org/abstract.asp?JID=5&AID=49213&CID=det2018&T=1 |
Conference/Event | 2018 American Society of Agricultural and Biological Engineers Annual International Meeting (ASABE 2018) |
Event Details | 2018 American Society of Agricultural and Biological Engineers Annual International Meeting (ASABE 2018) Parent American Society of Agricultural and Biological Engineers Annual International Meeting, ASABE Event Date 29 Jul 2018 to end of 01 Aug 2018 Event Location Detroit, United States |
Abstract | This study was conducted to determine the agronomic feasibility of using NEXENTM (urea treated with the urease inhibitor N-(N-butyl) thiophosphoric triamide) for surface of nitrogen (N) fertilizer in irrigated cotton, particularly, for in-crop season N applications. Field experiments were established on a cotton farm in southern Queensland (Australia) during the 2015-2016 season. Fertilizers were applied at N rates equivalent to 0 (control), and 140, 200 (farm practice) and 260 kg ha-1, respectively, to provide a ±30% range of the standard rate used for the commercial crop. The fertilizer was applied on the surface, incorporated or a combination of both pre-plant incorporation and surface application in-crop. Results showed that there was no fertilizer type or nitrogen rate effect above an application rate of 140 kg ha-1 N. This was consistent with analyses of cottonseed N from fertilizer-treated crop, which suggested that the crop was over-supplied with N above that rate. Given these results, the use of NEXENTM appears to be a promising alternative for (overhead) irrigated cotton, for both pre-plant and in-crop season application of N. Although commonly used in the Australian cotton industry, techniques such as ‘water-run‘ urea are considered as low efficiency because of the associated environmental losses of N. Surface application of nBTPT-treated urea with conventional twin discs fertilizer spreaders may enable for improved field operating efficiency and reduced cost of fertilizer application compared with other methods or fertilizer types that require soil incorporation. Our estimates indicated that operating costs may be reduced from approximately AUD16 per ha to AUD5 per ha (AUD1 ≈ USD0.75) when fertilizer is surface-applied compared with soil incorporation, because of lower energy requirements (draft) and labor (operating width, forward speed), with further savings achieved through improved timeliness. This alternative requires investigation to determine the potential risk of N losses through gaseous evolution (volatilization, N2/N2O), particularly in furrow irrigated systems. |
Keywords | Enhanced efficiency fertilizers, Nitrogen use efficiency, Soil incorporation, Surface fertilizer application, Urea treated with N-(N-butyl) thiophosphoric triamide. |
ANZSRC Field of Research 2020 | 300403. Agronomy |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | National Centre for Engineering in Agriculture |
Computational Engineering and Science Research Centre | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4x44/evaluation-of-nexen-stabilized-nitrogen-applied-to-overhead-irrigated-cotton-gossypium-hirsutum-l
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