Staff View: Weed dynamics in grain sorghum-grass intercropped systems

Weed dynamics in grain sorghum-grass intercropped systems

The aim of this study was to assess the influence of short-season sorghum-grass intercropped systems on weed population dynamics. The integrated systems consisted of sorghum grown at two row spacings (0.50 m and 0.70 m), intercropped with palisade grass or Congo grass. We also used sole crops of sor...

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Main Authors:	Sodré Filho, Joilson, Marchão, Robélio Leandro, Carvalho, Arminda Moreira de, Carmona, Ricardo
Format:	Artigo
Language:	English
Published:	Universidade Federal do Ceará 2017
Subjects:	Urochloa brizantha Urochloa ruziziensis Soil seed bank No-tillage Integrated crop-livestock system Banco de sementes no solo. Sistema plantio direto Integração lavoura-pecuária
Online Access:	http://repositorio.unb.br/handle/10482/29411
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spelling	ir-10482-294112019-03-28T14:06:23Z Weed dynamics in grain sorghum-grass intercropped systems Dinâmica de plantas daninhas em sistemas de consórcio de sorgo granífero-braquiárias Sodré Filho, Joilson Marchão, Robélio Leandro Carvalho, Arminda Moreira de Carmona, Ricardo Urochloa brizantha Urochloa ruziziensis Soil seed bank No-tillage Integrated crop-livestock system Urochloa brizantha Urochloa ruziziensis Banco de sementes no solo. Sistema plantio direto Integração lavoura-pecuária The aim of this study was to assess the influence of short-season sorghum-grass intercropped systems on weed population dynamics. The integrated systems consisted of sorghum grown at two row spacings (0.50 m and 0.70 m), intercropped with palisade grass or Congo grass. We also used sole crops of sorghum, palisade grass, Congo grass and a fallow to serve as a reference for spontaneous vegetation. The experiment was conducted in 2010 and 2011 at Planaltina (Federal District) in Brazil. Weed populations and weed dry matter were assessed during the short season and during the succession soybean cycle. The weed soil seed bank was sampled in both years of the study. Sorghum at a row spacing of 0.50 m intercropped with Congo grass reduced the Ageratum conyzoides population. The Tridax procumbens seed bank in the soil was reduced by using sorghum at a the row spacing of 0.70 m, whether intercropped or not. Planting palisade grass during the short season reduced Digitaria sanguinalis in the soil seed bank. Planting palisade grass or Congo grass as a sole crop or intercropped reduced the number of weed seeds in the soil, showing that these species can be recommended for integrated weed management in intercropped systems. Objetivou-se avaliar a dinâmica de plantas daninhas influenciada pelo cultivo de sorgo na safrinha em dois espaçamentos entre linhas (0,5 e 0,7 m) consorciado com braquiária ruziziensis e capim-marandu e em cultivo solteiro. O experimento foi conduzido em Planaltina, DF, nas safras 2010/2011 e 2011/2012 e as avaliações realizadas durante o ciclo do sorgo na safrinhas e na soja em sucessão. Foram avaliadas a população e a matéria seca de plantas daninhas e o banco de sementes no solo durante os dois anos agrícolas. O sistema de sorgo consorciado com braquiária ruziziensis no espaçamento de 0,50 m reduziu a população de Ageratum conyzoides entre os anos agrícolas. A quantidade de sementes viáveis de Tridax procumbens no solo foi reduzida no sistema com sorgo cultivado no espaçamento 0,70 m, independente de estar consorciado ou não. O cultivo solteiro de capim-marandu na safrinha diminuiu o banco de sementes de Digitaria sanguinalis no solo. Sistemas de cultivo em safrinha com a presença de capim-marandu ou braquiária ruziziensis, solteiros ou em consórcio, apresentaram menor número de sementes de plantas daninhas viáveis no solo, indicando que essas espécies podem ser inseridas em sistemas consorciados ou em sucessão visando ao manejo integrado no sistema plantio direto. 2017-12-07T05:09:08Z 2017-12-07T05:09:08Z 2014 Artigo Rev. Ciênc. Agron.,v.45,n.5spe,p.1032-1039,2014 1806-6690 http://repositorio.unb.br/handle/10482/29411 10.1590/S1806-66902014000500019 en Acesso Aberto application/pdf Universidade Federal do Ceará http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000500019&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1806-66902014000500019&lng=en&nrm=iso http://www.scielo.br/scielo.php?script=sci_pdf&pid=S1806-66902014000500019&lng=en&nrm=iso
institution	REPOSITORIO UNB
collection	REPOSITORIO UNB
language	English
topic	Urochloa brizantha Urochloa ruziziensis Soil seed bank No-tillage Integrated crop-livestock system Urochloa brizantha Urochloa ruziziensis Banco de sementes no solo. Sistema plantio direto Integração lavoura-pecuária
spellingShingle	Urochloa brizantha Urochloa ruziziensis Soil seed bank No-tillage Integrated crop-livestock system Urochloa brizantha Urochloa ruziziensis Banco de sementes no solo. Sistema plantio direto Integração lavoura-pecuária Sodré Filho, Joilson Marchão, Robélio Leandro Carvalho, Arminda Moreira de Carmona, Ricardo Weed dynamics in grain sorghum-grass intercropped systems
description	The aim of this study was to assess the influence of short-season sorghum-grass intercropped systems on weed population dynamics. The integrated systems consisted of sorghum grown at two row spacings (0.50 m and 0.70 m), intercropped with palisade grass or Congo grass. We also used sole crops of sorghum, palisade grass, Congo grass and a fallow to serve as a reference for spontaneous vegetation. The experiment was conducted in 2010 and 2011 at Planaltina (Federal District) in Brazil. Weed populations and weed dry matter were assessed during the short season and during the succession soybean cycle. The weed soil seed bank was sampled in both years of the study. Sorghum at a row spacing of 0.50 m intercropped with Congo grass reduced the Ageratum conyzoides population. The Tridax procumbens seed bank in the soil was reduced by using sorghum at a the row spacing of 0.70 m, whether intercropped or not. Planting palisade grass during the short season reduced Digitaria sanguinalis in the soil seed bank. Planting palisade grass or Congo grass as a sole crop or intercropped reduced the number of weed seeds in the soil, showing that these species can be recommended for integrated weed management in intercropped systems.
format	Artigo
author	Sodré Filho, Joilson Marchão, Robélio Leandro Carvalho, Arminda Moreira de Carmona, Ricardo
author_sort	Sodré Filho, Joilson
title	Weed dynamics in grain sorghum-grass intercropped systems
title_short	Weed dynamics in grain sorghum-grass intercropped systems
title_full	Weed dynamics in grain sorghum-grass intercropped systems
title_fullStr	Weed dynamics in grain sorghum-grass intercropped systems
title_full_unstemmed	Weed dynamics in grain sorghum-grass intercropped systems
title_sort	weed dynamics in grain sorghum-grass intercropped systems
publisher	Universidade Federal do Ceará
publishDate	2017
url	http://repositorio.unb.br/handle/10482/29411
_version_	1641988211312951296
score	13.657419

Weed dynamics in grain sorghum-grass intercropped systems

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