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Cropped Savannahs as carbon sink in acid sandy soils of low natural fertility.

An Arenic Paleustults savannah was cropped with adapted species and fertilized with unique doses of 1,0 and 0,3 Mg ha -1 of phosphoric rock and NPK, respectively. Random sampling of the treated soils at three depths 0-3,0; 3,1-6,0 and 6,1-10,0 cm allowed the determination of: soil organic carbon (SO...

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Autores Principales: OJEDA FALCÓN, A. D., LÓPEZ HERNÁNDEZ, D,
Formato: Artículo revista
Lenguaje:spa
Publicado: Universidad Nacional del Litoral 2019
Acceso en línea:https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEAgrarias/article/view/8784
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spelling oai:bibliotecavirtual.unl.edu.ar:article-87842020-11-30T16:51:21Z Cropped Savannahs as carbon sink in acid sandy soils of low natural fertility. SABANAS CULTIVADAS COMO SUMIDEROS DE CARBONO EN UN SUELO ÁCIDO-ARENOSO DE BAJA FERTILIDAD NATURAL OJEDA FALCÓN, A. D. LÓPEZ HERNÁNDEZ, D, An Arenic Paleustults savannah was cropped with adapted species and fertilized with unique doses of 1,0 and 0,3 Mg ha -1 of phosphoric rock and NPK, respectively. Random sampling of the treated soils at three depths 0-3,0; 3,1-6,0 and 6,1-10,0 cm allowed the determination of: soil organic carbon (SOC), light fraction of the soil organic matter (LF SOM), total nitrogen (N) and phosphorus (P), exchangeable cations, texture, soil bulk density, water-pH andKCl-pH, and available-P in samples from natural (NS) and cultivated savannas (CS). Statistical analysis of the data included: a two way ANOVA, PCA and path analysis for the establishment of multicausal statistical models. The CS showed significant changes in the fertility associated with higher carbon sequestration in the order of 2,970 kg ha -1 and a 50% increase in the electronegativity of the net coloidal charge density which is related with the LF SOM, COS and soil bulk density in comparion to the NS where variation factors were related to inorganic nature. Un Arenic Paleustults de sabana fue cultivado con especies adaptadas y fertilizado con dosis únicas de 1,0 y 0,3 Mg ha -1 de roca fosfórica (RF) y NPK, respectivamente. Un muestreo aleatorio de suelo, en los tratamientos, sabana natural (SN) y sabana cultivada (SC), a las profundidades de 0-3,0; 3,1-6,0 y 6,1-10,0 cm, permitió las determinaciones de textura, COS, fracción ligera de la materia orgánica del suelo (FL MOS), pHagua, pH KCl , densidad aparente (Da), contenidos totales de nitrógeno (N) y fósforo (P), P-disponible y bases intercambiables. Los análisis estadísticos incluyeron: ANOVA, ACP y un análisis de ruta, que generó modelos estadísticos multicausales. La SC mostró cambios significativos al acumular 2.970 kg ha -1 de COS y presentar una densidad de carga neta coloidal (DCNC) 50% más electronegativa, que se relacionó con la FL MOS, el COS y la Da, en contraste con la SN, cuyos factores de variación fueron de naturaleza inorgánicas. Universidad Nacional del Litoral 2019-12-18 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo Articulo info:ar-repo/semantics/artículo application/pdf text/html https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEAgrarias/article/view/8784 10.14409/fa.v19i2.8784 FAVE Sección Ciencias Agrarias; Vol. 18 Núm. 2 (2019): FAVE Sección Ciencias Agrarias; 25-44 FAVE Sección Ciencias Agrarias; Vol 18 No 2 (2019): FAVE Sección Ciencias Agrarias; 25-44 FAVE Sección Ciencias Agrarias; v. 18 n. 2 (2019): FAVE Sección Ciencias Agrarias; 25-44 2346-9129 1666-7719 10.14409/fa.v19i2 spa info:eu-repo/grantAgreement/EC/FP7/ https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEAgrarias/article/view/8784/12210 https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEAgrarias/article/view/8784/12211 info:eu-repo/semantics/openAccess Derechos de autor 2019 FAVE Sección Ciencias Agrarias
institution Universidad Nacional del Litoral
collection Publicaciones periódicas
language spa
format Artículo revista
description An Arenic Paleustults savannah was cropped with adapted species and fertilized with unique doses of 1,0 and 0,3 Mg ha -1 of phosphoric rock and NPK, respectively. Random sampling of the treated soils at three depths 0-3,0; 3,1-6,0 and 6,1-10,0 cm allowed the determination of: soil organic carbon (SOC), light fraction of the soil organic matter (LF SOM), total nitrogen (N) and phosphorus (P), exchangeable cations, texture, soil bulk density, water-pH andKCl-pH, and available-P in samples from natural (NS) and cultivated savannas (CS). Statistical analysis of the data included: a two way ANOVA, PCA and path analysis for the establishment of multicausal statistical models. The CS showed significant changes in the fertility associated with higher carbon sequestration in the order of 2,970 kg ha -1 and a 50% increase in the electronegativity of the net coloidal charge density which is related with the LF SOM, COS and soil bulk density in comparion to the NS where variation factors were related to inorganic nature.
author OJEDA FALCÓN, A. D.
LÓPEZ HERNÁNDEZ, D,
spellingShingle OJEDA FALCÓN, A. D.
LÓPEZ HERNÁNDEZ, D,
Cropped Savannahs as carbon sink in acid sandy soils of low natural fertility.
author_facet OJEDA FALCÓN, A. D.
LÓPEZ HERNÁNDEZ, D,
author_sort OJEDA FALCÓN, A. D.
title Cropped Savannahs as carbon sink in acid sandy soils of low natural fertility.
title_short Cropped Savannahs as carbon sink in acid sandy soils of low natural fertility.
title_full Cropped Savannahs as carbon sink in acid sandy soils of low natural fertility.
title_fullStr Cropped Savannahs as carbon sink in acid sandy soils of low natural fertility.
title_full_unstemmed Cropped Savannahs as carbon sink in acid sandy soils of low natural fertility.
title_sort cropped savannahs as carbon sink in acid sandy soils of low natural fertility.
publisher Universidad Nacional del Litoral
publishDate 2019
url https://bibliotecavirtual.unl.edu.ar/publicaciones/index.php/FAVEAgrarias/article/view/8784
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score 11.8626

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