Soil carbon and nitrogen fractions and wheat yield in the south-east of Buenos Aires, Argentina.
Continued soil management, tillage system and summer crop sequences affect the distribution and stocks of soil organic carbon (OC), total nitrogen (TN) and their fractions, with different lability degrees. A long-term experiment was conducted in the Barrow Integrated Experimental Farm (INTA), where...
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| Autores principales: | , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Facultad de Ciencias Agronómicas - UNR
2020
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| Materias: | |
| Acceso en línea: | https://cienciasagronomicas.unr.edu.ar/index.php/agro/article/view/18 |
| Aporte de: |
| id |
I15-R223-article-18 |
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| record_format |
ojs |
| institution |
Universidad Nacional de Rosario |
| institution_str |
I-15 |
| repository_str |
R-223 |
| container_title_str |
Ciencias Agronómicas |
| language |
Español |
| format |
Artículo revista |
| topic |
Carbono orgánico Índice de Recalcitrancia Secuencias de cultivos Organic Carbon Recalcitrance Index Crop sequences Carbono Orgânico Índice de recalcitrância Seqüências de culturas |
| spellingShingle |
Carbono orgánico Índice de Recalcitrancia Secuencias de cultivos Organic Carbon Recalcitrance Index Crop sequences Carbono Orgânico Índice de recalcitrância Seqüências de culturas Landriscini, Maria Rosa Galantini, Juan Alberto Forján, Horacio García, Ramiro Javier Soil carbon and nitrogen fractions and wheat yield in the south-east of Buenos Aires, Argentina. |
| topic_facet |
Carbono orgánico Índice de Recalcitrancia Secuencias de cultivos Organic Carbon Recalcitrance Index Crop sequences Carbono Orgânico Índice de recalcitrância Seqüências de culturas |
| author |
Landriscini, Maria Rosa Galantini, Juan Alberto Forján, Horacio García, Ramiro Javier |
| author_facet |
Landriscini, Maria Rosa Galantini, Juan Alberto Forján, Horacio García, Ramiro Javier |
| author_sort |
Landriscini, Maria Rosa |
| title |
Soil carbon and nitrogen fractions and wheat yield in the south-east of Buenos Aires, Argentina. |
| title_short |
Soil carbon and nitrogen fractions and wheat yield in the south-east of Buenos Aires, Argentina. |
| title_full |
Soil carbon and nitrogen fractions and wheat yield in the south-east of Buenos Aires, Argentina. |
| title_fullStr |
Soil carbon and nitrogen fractions and wheat yield in the south-east of Buenos Aires, Argentina. |
| title_full_unstemmed |
Soil carbon and nitrogen fractions and wheat yield in the south-east of Buenos Aires, Argentina. |
| title_sort |
soil carbon and nitrogen fractions and wheat yield in the south-east of buenos aires, argentina. |
| description |
Continued soil management, tillage system and summer crop sequences affect the distribution and stocks of soil organic carbon (OC), total nitrogen (TN) and their fractions, with different lability degrees. A long-term experiment was conducted in the Barrow Integrated Experimental Farm (INTA), where three crop sequences were evaluated, alternating legumes, oilseeds and grasses, N fertilization and conventional tillage. The aims of this study were: 1) to determine the effect of crop rotations and fertilization on the organic C and N fractions; 2) to evaluate the changes in the organic fractions content with different degrees of recalcitrance (mineral organic carbon, MOC, and recalcitrant organic carbon, ROC) and the recalcitrance index, RI; 3) to evaluate C lability through the relationships between the organic carbon fractions; 4) to study the potentially mineralizable N (Nan) related to N soil contribution. Labile and recalcitrant fractions were separated with acid hydrolysis and the RI was calculated. The crops provided different amounts of residues, which made each system behave differently even with similar OC levels. Grass-legume sequences had higher TOC and coarse particulate organic carbon fraction, with 18% lability. The sequence with soybean, the residues of which had a lower C:N ratio, could be more susceptible to chemical degradation. The potentially mineralizable N was not associated with OC fractions and was more abundant in the sequence with soy. Oilseeds were found to be better predecessors than summer grasses for wheat yield. |
| publisher |
Facultad de Ciencias Agronómicas - UNR |
| publishDate |
2020 |
| url |
https://cienciasagronomicas.unr.edu.ar/index.php/agro/article/view/18 |
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2023-05-16T22:17:44Z |
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I15-R223-article-182022-08-09T12:15:51Z Soil carbon and nitrogen fractions and wheat yield in the south-east of Buenos Aires, Argentina. Fracciones de carbono y nitrógeno del suelo y productividad del trigo en el sudeste bonaerense, Argntina. Frações de carbono e nitrogêneo do solo e produtividade do trigo no sudeste de Buenos Aires, Argentina. Landriscini, Maria Rosa Galantini, Juan Alberto Forján, Horacio García, Ramiro Javier Carbono orgánico Índice de Recalcitrancia Secuencias de cultivos Organic Carbon Recalcitrance Index Crop sequences Carbono Orgânico Índice de recalcitrância Seqüências de culturas Continued soil management, tillage system and summer crop sequences affect the distribution and stocks of soil organic carbon (OC), total nitrogen (TN) and their fractions, with different lability degrees. A long-term experiment was conducted in the Barrow Integrated Experimental Farm (INTA), where three crop sequences were evaluated, alternating legumes, oilseeds and grasses, N fertilization and conventional tillage. The aims of this study were: 1) to determine the effect of crop rotations and fertilization on the organic C and N fractions; 2) to evaluate the changes in the organic fractions content with different degrees of recalcitrance (mineral organic carbon, MOC, and recalcitrant organic carbon, ROC) and the recalcitrance index, RI; 3) to evaluate C lability through the relationships between the organic carbon fractions; 4) to study the potentially mineralizable N (Nan) related to N soil contribution. Labile and recalcitrant fractions were separated with acid hydrolysis and the RI was calculated. The crops provided different amounts of residues, which made each system behave differently even with similar OC levels. Grass-legume sequences had higher TOC and coarse particulate organic carbon fraction, with 18% lability. The sequence with soybean, the residues of which had a lower C:N ratio, could be more susceptible to chemical degradation. The potentially mineralizable N was not associated with OC fractions and was more abundant in the sequence with soy. Oilseeds were found to be better predecessors than summer grasses for wheat yield. El uso del suelo, las labranzas y las secuencias estivales, afectan la distribución y el contenido de carbono orgánico (CO), nitrógeno total (NT) y sus fracciones con diferente grado de labilidad. En la Chacra Experimental Integrada Barrow (INTA), se condujo un ensayo de larga duración, donde se evaluaron tres secuencias de cultivos, alternando leguminosas, oleaginosas y gramíneas, fertilización nitrogenada y labranza convencional. Los objetivos fueron: 1) determinar el efecto de las rotaciones y la fertilización sobre las fracciones orgánicas de C y N, 2) evaluar los cambios en el contenido de las fracciones con distinto grado de recalcitrancia (carbono orgánico mineral, COM y carbono orgánico recalcitrante, COR) e Índice de Recalcitrancia de C y N 3) evaluar la labilidad del C a través de las relaciones entre algunas fracciones de C y 4) estudiar el N potencialmente mineralizable, Nan, para conocer la capacidad de aportar N. La hidrólisis ácida separó las fracciones lábiles y recalcitrantes y se calculó el IR. Los cultivos aportaron diferentes cantidades de residuos ocasionando que cada sistema se comporte diferente aún con niveles semejantes de CO. Las secuencias con gramíneas y leguminosas, presentaron mayores concentraciones COT y de carbono orgánico particulado grueso, COPg, con 18% de labilidad. La secuencia con soja, cuyos residuos presentaron menor relación C:N, podría tener mayor susceptibilidad a la degradación química. El N potencialmente mineralizable no se asoció a las fracciones de C y fue más abundante en la secuencia con soja. Las oleaginosas resultan ser mejores antecesores que las gramíneas de verano en el rendimiento del trigo. O uso do solo, a lavoura e as seqüências do verão afetam a distribuição e o conteúdo de carbono orgânico (CO), nitrogênio total (NT) e suas frações com diferentes graus de labilidade. Na Fazenda Experimental Integrada Barrow (INTA) foi realizado um estudo de longo prazo, onde foram avaliadas três seqüências de culturas, alternando leguminosas, oleaginosas e gramíneas, comadubação nitrogenada e preparo convencional. Os objetivos foram: 1) determinar o efeito das rotações e adubação das culturas nas frações orgânicas de C e N; 2) avaliar as alterações no conteúdo das frações com diferentes graus de recalcitância (carbono mineral orgânico, COM e carbono orgânico recalcitrante, COR) e índice de recalcitância de C e N; 3) avaliar a probabilidade de C através das relações entre algumas frações de carbono orgânico e 4) estudar o N potencialmente mineralizável (Nan) para conhecer a capacidade de contribuir com N. Uma hidrólise ácida foi usada para separar as frações lábeis e recalcitrantes e para medir o IR. As culturas forneceram diferentes quantidades de resíduos, fazendo com que cada sistema se comportasse de maneira diferente, mesmo com níveis semelhantes de CO. As seqüências com gramíneas e leguminosas apresentaram maior COT e fração de carbono orgânico particulado grosso POCc com 18% de labilidade. A sequência com soja, cujos resíduos apresentaram menor relação C: N pode ser mais suscetível à degradação química. O N potencialmente mineralizável não se associou às frações de C e foi mais abundante na sequência da soja. As oleaginosas se mostraram melhores antecessoras do que as gramíneas de verão na produção de trigo Facultad de Ciencias Agronómicas - UNR 2020-06-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion text/html application/pdf https://cienciasagronomicas.unr.edu.ar/index.php/agro/article/view/18 10.35305/agro35.281 Ciencias Agronómicas; Núm. 35 (20): 2020; e006 2250-8872 1853-4333 spa https://cienciasagronomicas.unr.edu.ar/index.php/agro/article/view/18/24 https://cienciasagronomicas.unr.edu.ar/index.php/agro/article/view/18/25 Derechos de autor 2020 Maria Rosa Landriscini, Juan Alberto Galantini, Horacio Forján, Ramiro Javier García https://creativecommons.org/licenses/by-nc-nd/4.0/ |