Effect of three nitrogen fertilizer sources on denitrification rate under irrigated potato production on sandy soils
| العنوان: | Effect of three nitrogen fertilizer sources on denitrification rate under irrigated potato production on sandy soils |
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| المؤلفون: | Athyna N. Cambouris, Noura Ziadi, Philippe Rochette, Isabelle Perron, Bernie J. Zebarth |
| المصدر: | Canadian Journal of Soil Science. 99:117-125 |
| بيانات النشر: | Canadian Science Publishing, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Denitrification, Soil Science, chemistry.chemical_element, 04 agricultural and veterinary sciences, 010501 environmental sciences, Solanum tuberosum, 01 natural sciences, Nitrogen, chemistry.chemical_compound, Agronomy, chemistry, Nitrate, Yield (wine), Soil water, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Production (economics), Environmental science, Ammonium, 0105 earth and related environmental sciences |
| الوصف: | Large inputs of nitrogen (N) are required to optimize yield and quality of potato (Solanum tuberosum L.), and it may result in a high potential for N losses including denitrification. This 5 yr study compared the effect of three N fertilizer sources [ammonium nitrate (AN), ammonium sulfate (AS), and polymer-coated urea (PCU)] at 200 kg N ha−1 (N200) and an unfertilized control (N0) on denitrification rate (DR) from irrigated potato production on a coarse-textured soil in eastern Canada. Fertilizer was banded all at-planting (PCU) or split 40% at-planting and 60% at-hilling (AN and AS). The DR was measured biweekly from planting to harvest at two locations (ridge and furrow) using the acetylene blockage technique. The mean annual DR, averaged across N treatments, ranged from 0.8 to 8.0 μg N2O-N kg dry soil−1 d−1, and it was most closely related to the water inputs in the 72 h before DR measurements. Mean DR averaged across year was greater for N200 than for N0 (4.2 vs. 3.4 μg N2O-N kg dry soil−1 d−1) but did not differ among N sources. Our results suggest that choice of N fertilizer source in sandy soils is more important in controlling losses of N by leaching than by denitrification. |
| تدمد: | 1918-1841 0008-4271 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::6ba2f696adfca51e44dd1e1849a45d3a https://doi.org/10.1139/cjss-2018-0150 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........6ba2f696adfca51e44dd1e1849a45d3a |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19181841 00084271 |
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