Combined effects of irrigation management and nitrogen fertilization on soft wheat productive responses under Mediterranean conditions
| Autor: | Elizabete Rosa, José Ferro Palma, José Penacho, Isabel Guerreiro, Maria Natividade Costa, Alexandra Tomaz, José Dôres, Manuel Patanita, Maria Isabel Patanita, Patrícia Oliveira, Luis Boteta |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Irrigation Water supply chemistry.chemical_element Crops Efficiency Indexação Scopus 01 natural sciences Crop Grain quality Leaching (agriculture) Irrigation management lcsh:Environmental sciences 2. Zero hunger lcsh:GE1-350 Ecology business.industry Crop yield Quality control food and beverages 04 agricultural and veterinary sciences Nitrogen 6. Clean water Agronomy chemistry 13. Climate action 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Grain (agricultural product) business 010606 plant biology & botany |
| Zdroj: | E3S Web of Conferences, Vol 86, p 00019 (2019) |
| ISSN: | 2267-1242 |
| Popis: | 1st International Scientific Conference on Ecological and Environmental Engineering, E3S Web of Conferences, Krakow; Poland 26-29 June 2018 To evaluate water-nitrogen interactions on irrigated wheat production, it is important to know: The dose, the fractioning, and the most recommended period of fertilizers application; the best irrigation volumes and schedules for meeting the crop requirements, ensuring the minimum leaching risks, to obtain the highest yields and quality of the grain, while achieving high water and nitrogen use efficiencies. This study evaluated the interactive effect of irrigation and nitrogen fertilization, with conventional and enhanced efficiency fertilizers, on yield, irrigation water use efficiency and grain quality of soft wheat. For this purpose, two trials were carried out during the 2016/2017 in Beja, Alentejo, under two irrigation strategies: D1 (100% of crop evapotranspiration-ETc-throughout the cycle) and D2 (100% of ETc only at four stages: Beginning of stem extension; booting; heading; grain filling). In one trial, enhanced efficiency N fertilizers were applied through 6 splitting treatments. In the other, conventional N fertilizer was applied through 5 splitting treatments. The results suggest that, on one hand, early applications of advanced efficiency fertilizers do not compromise the crop yield and, on the other hand, the availability of nitrogen in the booting stage is important to obtain higher grain protein content. |
| Databáze: | OpenAIRE |
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