TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM

Arbuscular mycorrhizal fungi (AMF) and their product glomalin (GRSP) play a decisive role in the soil aggregation, affecting the carbon (C) dynamics in agroecosystems. Tillage affects the AMF activity and GRSP content, influencing the stability and the soil C forms as well. The aim of this study was...

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Autores principales:	Curaqueo,Gustavo, Acevedo,Edmundo, Cornejo,Pablo, Seguel,Alex, Rubio,Rosa, Borie,Fernando
Lenguaje:	English
Publicado:	Sociedad Chilena de la Ciencia del Suelo 2010
Materias:	Agroecosystem Glomalin Related Soil Protein, Mollisol Organic Matter Fractions Soil Aggregates
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912010000100002
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spelling	oai:scielo:S0718-279120100001000022010-04-21TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEMCuraqueo,GustavoAcevedo,EdmundoCornejo,PabloSeguel,AlexRubio,RosaBorie,Fernando Agroecosystem Glomalin Related Soil Protein, Mollisol Organic Matter Fractions Soil Aggregates Arbuscular mycorrhizal fungi (AMF) and their product glomalin (GRSP) play a decisive role in the soil aggregation, affecting the carbon (C) dynamics in agroecosystems. Tillage affects the AMF activity and GRSP content, influencing the stability and the soil C forms as well. The aim of this study was to compare the effect of no tillage (NT) and conventional tillage (CT) on: i) arbuscular mycorrhizal hyphal length and GRSP content; ii) the nature of soil organic matter by means of physical fractionation (free paniculate organic matter [fPOM]; occluded paniculate organic matter [oPOM] and mineral-associated soil organic matter [Mineral]), as well as chemical fractionation (fulvic acid, humic acid and humin), and iii) the relationships between AMF parameters, soil carbon and water stable aggregates (WSA) in a Mollisol of Central Chile managed for 6 years under NT and CT using a wheat-corn rotation. Higher values in the AMF hyphal length, GRSP and WSA in NT compared with CT were observed. Significant relationships were found between GRSP and WSA (r = 0.66, p < 0.01) and total mycelium and GRSP (r = 0.58, p< 0.05). The total carbon increased 44% under NT compared with CT. The chemical fractionation showed percentage greater than 95% for humim in both treatments. Physical fractionation indicates that the higher part of the SOC (89.4 - 95.1%) was associated with the mineral fraction.info:eu-repo/semantics/openAccessSociedad Chilena de la Ciencia del SueloRevista de la ciencia del suelo y nutrición vegetal v.10 n.1 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912010000100002en10.4067/S0718-27912010000100002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Agroecosystem Glomalin Related Soil Protein, Mollisol Organic Matter Fractions Soil Aggregates
spellingShingle	Agroecosystem Glomalin Related Soil Protein, Mollisol Organic Matter Fractions Soil Aggregates Curaqueo,Gustavo Acevedo,Edmundo Cornejo,Pablo Seguel,Alex Rubio,Rosa Borie,Fernando TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM
description	Arbuscular mycorrhizal fungi (AMF) and their product glomalin (GRSP) play a decisive role in the soil aggregation, affecting the carbon (C) dynamics in agroecosystems. Tillage affects the AMF activity and GRSP content, influencing the stability and the soil C forms as well. The aim of this study was to compare the effect of no tillage (NT) and conventional tillage (CT) on: i) arbuscular mycorrhizal hyphal length and GRSP content; ii) the nature of soil organic matter by means of physical fractionation (free paniculate organic matter [fPOM]; occluded paniculate organic matter [oPOM] and mineral-associated soil organic matter [Mineral]), as well as chemical fractionation (fulvic acid, humic acid and humin), and iii) the relationships between AMF parameters, soil carbon and water stable aggregates (WSA) in a Mollisol of Central Chile managed for 6 years under NT and CT using a wheat-corn rotation. Higher values in the AMF hyphal length, GRSP and WSA in NT compared with CT were observed. Significant relationships were found between GRSP and WSA (r = 0.66, p < 0.01) and total mycelium and GRSP (r = 0.58, p< 0.05). The total carbon increased 44% under NT compared with CT. The chemical fractionation showed percentage greater than 95% for humim in both treatments. Physical fractionation indicates that the higher part of the SOC (89.4 - 95.1%) was associated with the mineral fraction.
author	Curaqueo,Gustavo Acevedo,Edmundo Cornejo,Pablo Seguel,Alex Rubio,Rosa Borie,Fernando
author_facet	Curaqueo,Gustavo Acevedo,Edmundo Cornejo,Pablo Seguel,Alex Rubio,Rosa Borie,Fernando
author_sort	Curaqueo,Gustavo
title	TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM
title_short	TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM
title_full	TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM
title_fullStr	TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM
title_full_unstemmed	TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM
title_sort	tillage effect on soil organic matter, mycorrhizal hyphae and aggregates in a mediterranean agroecosystem
publisher	Sociedad Chilena de la Ciencia del Suelo
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912010000100002
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_version_	1714203323715813376

TILLAGE EFFECT ON SOIL ORGANIC MATTER, MYCORRHIZAL HYPHAE AND AGGREGATES IN A MEDITERRANEAN AGROECOSYSTEM

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