Effects of Potato Cultivar on the Components of Nitrogen Use Efficiency
| Autor: | E. Lampaert, A. Geille, C. Hannon, J. M. Gravoueille, F. Laurent, B. Houilliez, J. P. Cohan |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
business.industry Crop yield chemistry.chemical_element 04 agricultural and veterinary sciences 01 natural sciences Nitrogen Economic Income chemistry Agronomy Agriculture Yield (wine) 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Cultivar business Agronomy and Crop Science Plant nutrition Complete response 010606 plant biology & botany Food Science Mathematics |
| Zdroj: | Potato Research. 61:231-246 |
| ISSN: | 1871-4528 0014-3065 |
| Popis: | Maximising potato nitrogen use efficiency (NUE) is necessary to combine high yields, market requirements, high economic income and low environmental impact. A 5-year study was conducted to assess the cultivar effect on NUE components in France. Seven trials were carried out in the Beauce, Picardie and Nord-Pas de Calais regions. The protocol combined two factors: cultivar (‘Agata’, ‘Bintje’, ‘Innovator’, ‘Lady Claire’ and ‘Spirit’) and nitrogen application along a complete response curve (six to seven rates). Total tuber yield, 50 mm tuber yield and nitrogen uptake at haulm killing were measured. We demonstrate that the potato cultivar has a clear effect on NUE components. This effect is supported both by nitrogen uptake efficiency (NupE) and by nitrogen utilisation efficiency (NutE). It implies that the potato cultivars tested generate different nitrogen requirements per yield unit to reach the optimum yield. The way to characterise these differences for all cultivars available in registration trials must be considered before taking into account a cultivar effect on NUE in nitrogen recommendations for farmers. |
| Databáze: | OpenAIRE |
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