Field-scale evaluation of calcium ammonium nitrate, urea, and urea treated with N-(n-butyl) thiophosphoric triamide applied to grassland in Ireland
Article
Article Title | Field-scale evaluation of calcium ammonium nitrate, urea, and urea treated with N-(n-butyl) thiophosphoric triamide applied to grassland in Ireland |
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ERA Journal ID | 1624 |
Article Category | Article |
Authors | Antille, Diogenes L. (Author), Hoekstra, Nyncke J. (Author) and Lalor, Stanley T. J. (Author) |
Journal Title | Communications in Soil Science and Plant Analysis |
Journal Citation | 46 (11), pp. 1345-1361 |
Number of Pages | 17 |
Year | 2015 |
Place of Publication | United States |
ISSN | 0010-3624 |
1532-2416 | |
Digital Object Identifier (DOI) | https://doi.org/10.1080/00103624.2015.1033540 |
Web Address (URL) | http://www.tandfonline.com/doi/full/10.1080/00103624.2015.1033540 |
Abstract | This study investigated the effects of nitrogen (N) source, rate, and timing of application on dry-matter yield (DMY), N responses, N uptake and N-use efficiency (NUE) in a grass crop. The experiment used three fertilizer treatments: calcium ammonium nitrate (CAN), urea, and urea treated with N-(n-butyl) thiophosphoric triamide (NBTPT), applied at 0 (control), 25, 50, and 75 kg ha−1 of N over eighteen application timings. Results showed relatively lower agronomic performance of urea compared with CAN when applied in early spring. Urea reported lower N responses, lower relative DMY (90 percent), and relative N uptake (85 percent), which translated in lower NUE (0.45 kg kg−1) compared with CAN (0.70 kg kg−1). In spring fertilizer applications, urea and NBTPT showed DMY and NUE values comparable to those obtained with CAN. However, NBTPT enhanced overall performance of urea, which was shown with increasing temperatures toward summer or increasing N application rates. For summer applications, the efficiency of urea was less (P < 0.05) than that of CAN or NBTPT in all measured parameters, suggesting greater ammonia volatilization loss in urea-treated grass. Nitrogen saved in volatilization improved uptake and responses in NBTPT-treated grass, and hence DMY was not affected compared with CAN in summer fertilizer applications. The results of this study are supportive of increased usage of urea-based fertilizers treated with NBTPT. |
Keywords | calcium ammonium nitrate; fertilizer use efficiency; fertilizer N response; NBTPT; temperate grassland; urea |
ANZSRC Field of Research 2020 | 300407. Crop and pasture nutrition |
410699. Soil sciences not elsewhere classified | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | National Centre for Engineering in Agriculture |
Teagasc Agriculture and Food Development Authority, Ireland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3765/field-scale-evaluation-of-calcium-ammonium-nitrate-urea-and-urea-treated-with-n-n-butyl-thiophosphoric-triamide-applied-to-grassland-in-ireland
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