Little potential of spring wheat genotypes as a strategy to reduce nitrogen leaching in Central Europe
Nitrogen [N] losses negatively impact groundwater quality. Spring wheat genotypes varying in N-fertilizer recovery were studied [by using lysimeters] for their potential to minimize NO3-N leaching during spring and summer, over a three-year period. Additionally, we examined to what extent root growt...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/download/articulo/2016herrera.pdf LINK AL EDITOR |
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| 245 | 1 | 0 | |a Little potential of spring wheat genotypes as a strategy to reduce nitrogen leaching in Central Europe |
| 520 | |a Nitrogen [N] losses negatively impact groundwater quality. Spring wheat genotypes varying in N-fertilizer recovery were studied [by using lysimeters] for their potential to minimize NO3-N leaching during spring and summer, over a three-year period. Additionally, we examined to what extent root growth and NO³N leaching explain the well-known difference found between apparent and isotopic N recovery. The genotypes were grown under low [2 g m-²] and high [27 g m-² 9] N fertilizer supply. On average, the apparent and isotopic recoveries of N fertilizer by wheat were 43 per cent and 51 per cent, respectively. The three genotypes varied in fertilizer N recovery but not in NO3-N leaching, which only accounted for 15 per cent of the applied N fertilizer. The differences in N uptake, fertilizer N recovery and root growth among the genotypes were not associated with the leached NO3-N because root growth and N uptake were not well synchronized with NO3-N leaching. Already at stem elongation 70 per cent to 98 per cent of the season-long NO3-N leaching had already taken place. Thus, the ability to minimize in-season NO3-N leaching by using spring wheat genotypes with higher fertilizer N recovery was limited because maximum N leaching occurred in the early crop season. | ||
| 653 | 0 | |a LYSIMETERS | |
| 653 | 0 | |a FERTILIZER N RECOVERY | |
| 653 | 0 | |a N UPTAKE | |
| 653 | 0 | |a ROOT | |
| 653 | 0 | |a MINIRHIZOTRON | |
| 700 | 1 | |9 12094 |a Herrera, Juan Manuel | |
| 700 | 1 | |a Noulas, Christos |9 70231 | |
| 700 | 1 | |a Stamp, Peter |9 70232 | |
| 700 | 1 | |a Pellet, Didier |9 70230 | |
| 773 | |t Agronomy |g Vol.6, no.2 (2016), art. 29. 15 p., tbls., grafs. | ||
| 856 | |u http://ri.agro.uba.ar/files/download/articulo/2016herrera.pdf |i En internet |q application/pdf |f 2016herrera |x MIGRADOS2018 | ||
| 856 | |u https://www.mdpi.com/journal/agronomy |x MIGRADOS2018 |z LINK AL EDITOR | ||
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| 976 | |a AAG | ||