Time-course of soil microbial communities in different tillage and crop rotation systems

ABSTRACT The soil microbial communities involved in the biogeochemical cycles of plant nutrients are negatively affected by unfavorable agricultural practices. In three tillage systems (traditional tillage, TT; traditional tillage with residue incorporation, TTI; and conservation tillage, CT) with t...

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Autores principales:	González-Figueroa,Sarahyt S., Covarrubias-Prieto,Jorge, Aguirre-Mancilla,Cesar L., Raya-Pérez,Juan C., Gámez-Vázquez,Alfredo J., Grageda-Cabrera,Oscar A.
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2020
Materias:	CFUs rhizospheric microorganisms soil degradation Vertisol soil
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000400650
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spelling	oai:scielo:S0718-583920200004006502020-11-22Time-course of soil microbial communities in different tillage and crop rotation systemsGonzález-Figueroa,Sarahyt S.Covarrubias-Prieto,JorgeAguirre-Mancilla,Cesar L.Raya-Pérez,Juan C.Gámez-Vázquez,Alfredo J.Grageda-Cabrera,Oscar A. CFUs rhizospheric microorganisms soil degradation Vertisol soil ABSTRACT The soil microbial communities involved in the biogeochemical cycles of plant nutrients are negatively affected by unfavorable agricultural practices. In three tillage systems (traditional tillage, TT; traditional tillage with residue incorporation, TTI; and conservation tillage, CT) with three crop rotations (cereal-cereal, C-C; legume-cereal, L-C; and cereal-legume, C-L) at three soil depths (0-5, 5-15, and 15-30 cm), the effects on the populations of bacteria, actinomycetes, and fungi over a period of six crop cycles (3 yr) were evaluated. The tillage system, crop rotation, and depth affected the concentration of microbes in the soil. Under TT/C-C (regional control), they decreased by 7.5%; in contrast, under CT/L-C and TTI/L-C, they increased by 144% and 76%, respectively. Regardless of the tillage system, rotation with legumes, especially when the legume was cultivated in the spring-summer cycle (C-L), caused significant increases in microbial populations. At the end of 3 yr, under CT and TTI the populations of actinomycetes increased, while the fungal population remained stable and the bacterial populations fluctuated in the different crop cycles. In all treatments, the concentration of microorganisms decreased with soil depth. Local practices represent a risk to the diversity of soil microbiota, and it is imperative that farmers adopt conservation practices to achieve sustainability.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.80 n.4 20202020-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000400650en10.4067/S0718-58392020000400650
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	CFUs rhizospheric microorganisms soil degradation Vertisol soil
spellingShingle	CFUs rhizospheric microorganisms soil degradation Vertisol soil González-Figueroa,Sarahyt S. Covarrubias-Prieto,Jorge Aguirre-Mancilla,Cesar L. Raya-Pérez,Juan C. Gámez-Vázquez,Alfredo J. Grageda-Cabrera,Oscar A. Time-course of soil microbial communities in different tillage and crop rotation systems
description	ABSTRACT The soil microbial communities involved in the biogeochemical cycles of plant nutrients are negatively affected by unfavorable agricultural practices. In three tillage systems (traditional tillage, TT; traditional tillage with residue incorporation, TTI; and conservation tillage, CT) with three crop rotations (cereal-cereal, C-C; legume-cereal, L-C; and cereal-legume, C-L) at three soil depths (0-5, 5-15, and 15-30 cm), the effects on the populations of bacteria, actinomycetes, and fungi over a period of six crop cycles (3 yr) were evaluated. The tillage system, crop rotation, and depth affected the concentration of microbes in the soil. Under TT/C-C (regional control), they decreased by 7.5%; in contrast, under CT/L-C and TTI/L-C, they increased by 144% and 76%, respectively. Regardless of the tillage system, rotation with legumes, especially when the legume was cultivated in the spring-summer cycle (C-L), caused significant increases in microbial populations. At the end of 3 yr, under CT and TTI the populations of actinomycetes increased, while the fungal population remained stable and the bacterial populations fluctuated in the different crop cycles. In all treatments, the concentration of microorganisms decreased with soil depth. Local practices represent a risk to the diversity of soil microbiota, and it is imperative that farmers adopt conservation practices to achieve sustainability.
author	González-Figueroa,Sarahyt S. Covarrubias-Prieto,Jorge Aguirre-Mancilla,Cesar L. Raya-Pérez,Juan C. Gámez-Vázquez,Alfredo J. Grageda-Cabrera,Oscar A.
author_facet	González-Figueroa,Sarahyt S. Covarrubias-Prieto,Jorge Aguirre-Mancilla,Cesar L. Raya-Pérez,Juan C. Gámez-Vázquez,Alfredo J. Grageda-Cabrera,Oscar A.
author_sort	González-Figueroa,Sarahyt S.
title	Time-course of soil microbial communities in different tillage and crop rotation systems
title_short	Time-course of soil microbial communities in different tillage and crop rotation systems
title_full	Time-course of soil microbial communities in different tillage and crop rotation systems
title_fullStr	Time-course of soil microbial communities in different tillage and crop rotation systems
title_full_unstemmed	Time-course of soil microbial communities in different tillage and crop rotation systems
title_sort	time-course of soil microbial communities in different tillage and crop rotation systems
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000400650
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Time-course of soil microbial communities in different tillage and crop rotation systems

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