Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile

We studied the abundance, species composition, and depth distribution of the weed seed bank under no-tillage (NT) and conventional tillage (CT) at two sites, A and B. Soil samples were taken at three soil depths (0-2, 2-5, and 5-15 cm). Germinated, dormant, and total seeds were counted. The total nu...

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Autores principales:	Peralta Caroca,Rosa, Silva Candia,Paola, Acevedo Hinojosa,Edmundo
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2011
Materias:	no-tillage species composition abundance depth distribution
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100017
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spelling	oai:scielo:S0718-583920110001000172018-10-01Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central ChilePeralta Caroca,RosaSilva Candia,PaolaAcevedo Hinojosa,Edmundo no-tillage species composition abundance depth distribution We studied the abundance, species composition, and depth distribution of the weed seed bank under no-tillage (NT) and conventional tillage (CT) at two sites, A and B. Soil samples were taken at three soil depths (0-2, 2-5, and 5-15 cm). Germinated, dormant, and total seeds were counted. The total number of seeds was higher (p ≤ 0.05) under CT treatment at the two sites (CTA = 5175 seeds m-2, NTA = 3250 seeds m-2, CTB = 33770 m-2, and NTB = 22437 seeds m-2). The number of viable, dormant, and germinated seeds was also higher (p ≤ 0.05) in CT at the two sites. The percentage of viable seeds was low with 37% (CTA), 34% (CTB), 21% (NTA), and 8% (NTB). Viable seeds of Chenopodium album L. (CHEAL) dominated in the two trials with 67% (CTA), 20% (NTA), 96% (CTB), and 77% (NTB). In a principal component analysis, PC1 separated viable seeds of weed species according to tillage and PC2 separated weed species according to sites. Poa annua L. was the most important species associated with NT followed by Cichorium intybus L., and Sonchus while Euphorbia helioscopia L. and Echinochloa crus-galli (L.) P. Beauv. were associated with CT.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.71 n.1 20112011-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100017en10.4067/S0718-58392011000100017
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	no-tillage species composition abundance depth distribution
spellingShingle	no-tillage species composition abundance depth distribution Peralta Caroca,Rosa Silva Candia,Paola Acevedo Hinojosa,Edmundo Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile
description	We studied the abundance, species composition, and depth distribution of the weed seed bank under no-tillage (NT) and conventional tillage (CT) at two sites, A and B. Soil samples were taken at three soil depths (0-2, 2-5, and 5-15 cm). Germinated, dormant, and total seeds were counted. The total number of seeds was higher (p ≤ 0.05) under CT treatment at the two sites (CTA = 5175 seeds m-2, NTA = 3250 seeds m-2, CTB = 33770 m-2, and NTB = 22437 seeds m-2). The number of viable, dormant, and germinated seeds was also higher (p ≤ 0.05) in CT at the two sites. The percentage of viable seeds was low with 37% (CTA), 34% (CTB), 21% (NTA), and 8% (NTB). Viable seeds of Chenopodium album L. (CHEAL) dominated in the two trials with 67% (CTA), 20% (NTA), 96% (CTB), and 77% (NTB). In a principal component analysis, PC1 separated viable seeds of weed species according to tillage and PC2 separated weed species according to sites. Poa annua L. was the most important species associated with NT followed by Cichorium intybus L., and Sonchus while Euphorbia helioscopia L. and Echinochloa crus-galli (L.) P. Beauv. were associated with CT.
author	Peralta Caroca,Rosa Silva Candia,Paola Acevedo Hinojosa,Edmundo
author_facet	Peralta Caroca,Rosa Silva Candia,Paola Acevedo Hinojosa,Edmundo
author_sort	Peralta Caroca,Rosa
title	Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile
title_short	Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile
title_full	Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile
title_fullStr	Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile
title_full_unstemmed	Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile
title_sort	characterization of the weed seed bank in zero and conventional tillage in central chile
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100017
work_keys_str_mv	AT peraltacarocarosa characterizationoftheweedseedbankinzeroandconventionaltillageincentralchile AT silvacandiapaola characterizationoftheweedseedbankinzeroandconventionaltillageincentralchile AT acevedohinojosaedmundo characterizationoftheweedseedbankinzeroandconventionaltillageincentralchile
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Characterization of the Weed Seed Bank in Zero and Conventional Tillage in Central Chile

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