Nitrogen use efficiency in potato crop (Solanum tuberosum L.)
In Tunisia, nitrogen fertilization of potato combines the use of mineral fertilizers with high doses of N without reaching expected yield. . In order to improve the system productivity of tunisian exploitation, an experiment was conducted at the Technical Center of Potato and Artichoke (CTPTA) Saida...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidad Nacional de Colombia
2016-04-01
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| Series: | Acta Agronómica |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/48200 |
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| Summary: | In Tunisia, nitrogen fertilization of potato combines the use of mineral fertilizers with high doses of N without reaching expected yield. . In order to improve the system productivity of tunisian exploitation, an experiment was conducted at the Technical Center of Potato and Artichoke (CTPTA) Saida - Manouba. Three N treatments (0, 50 and 200 kg ha-1) and three varieties of potato (Spunta, Bellini and Atlas) were used. The aim of this study was to evaluate the efficiency of N use in Tunisian agricultural condition of potato crop as of determining the effect of different doses of N on the parameters of growth and development of potato crop, and fixing the optimal dose of N which allows the improvement of potato crop yield. Results indicated that higher yields and N extracted by tubers were determined with the highest N availability. The calculation of the coefficient of apparent use of N indicated low N use efficiency due to limited N availability. Based on the balance method, the concentration of nitrates in depth was high. The software Mabia-Région showed nitrate the loss of by drainage. |
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| ISSN: | 0120-2812 2323-0118 |