Root decomposition at high and low N supply throughout a crop rotation
Soil nitrogen (N) dynamics can be modified by cover crops in rotations with cereals. Although, roots area major source of N, little is known about the dynamics of root decomposition of cash and cover crops. The objective of this study was to assess the effects that cover crop species have on i) the...
| Otros Autores: | , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2017herrera.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 022 | |a 1161-0301 | ||
| 024 | |a 10.1016/j.eja.2016.12.012 | ||
| 040 | |a AR-BaUFA | ||
| 245 | |a Root decomposition at high and low N supply throughout a crop rotation | ||
| 520 | |a Soil nitrogen (N) dynamics can be modified by cover crops in rotations with cereals. Although, roots area major source of N, little is known about the dynamics of root decomposition of cash and cover crops. The objective of this study was to assess the effects that cover crop species have on i) the decompositionof spring wheat roots during the growth of cover crops, and ii) the decomposition of cover crop rootsduring the growing season of spring wheat. The experiment aimed also at comparing three non-winterhardy cover crops of varying shoot C-N ratios under low and high N input levels of 6 and 12 g N m-² y -¹respectively. The experiment included spring wheat (Triticum aestivum L.) as the main crop and non - winter hardy cover crops (yellow mustard (Sinapis alba L.), phacelia (Phacelia tanacetifolia Benth), andsunflower (Helianthus annuus L.) as well as bare soil fallow treatment. Minirhizotrons were used to non - destructively assess the spatial and temporal patterns of root growth and decomposition from 0.10 to1.00 m. Simultaneously, we grew all crops in soil columns to measure destructively C and N content in theroots. We concluded that wheat root decomposition was not affected by cover crop species. In contrast,during the growing season of wheat root decomposition of yellow mustard was on average twice as highfor phacelia and sunflower as a consequence of a higher production of roots with a significantly higher C-N ratio compared to the other cover crops. | ||
| 653 | |a COVER CROPS | ||
| 653 | |a ROOT TURN OVER | ||
| 653 | |a ROOT CARBON NITROGEN RATIO | ||
| 653 | |a WHEAT | ||
| 653 | |a RHIZOTRONS | ||
| 653 | |a MINIRHHIZOTRONSA | ||
| 700 | 1 | |9 12094 |a Herrera, Juan Manuel |u Agroscope. Nyon, Switzerland | |
| 700 | 1 | |a Büchi, L. |u Agroscope. Nyon, Switzerland. |9 67515 | |
| 700 | 1 | |9 6390 |a Rubio, Gerardo |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA). Buenos Aires, Argentina. |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA). Buenos Aires, Argentina. | |
| 700 | 1 | |a Torres Guerrero, C. |u Colegio de Postgraduados. Laboratorio de Génesis y Clasificación de Suelos. Campus Montecillo, Mexico. |9 67516 | |
| 700 | 1 | |a Wendling, M. |u Agroscope. Nyon, Switzerland. |9 67517 | |
| 700 | 1 | |9 70232 |a Stamp, Peter |u Swiss Federal Institute of Technology. Zürich, Switzerland. | |
| 700 | 1 | |a Pellet, D. |u Agroscope. Nyon, Switzerland. |9 67519 | |
| 773 | 0 | |t European journal of agronomy |w SECS000534 |g Vol.84, no.3 (2017), p.105-112, grafs., tbls. | |
| 856 | |f 2017herrera |i en reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2017herrera.pdf |x ARTI201808 | ||
| 856 | |u https://www.elsevier.com |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||