Methods of controlling sapé in molasses grass pastures
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/16128 |
Resumo: | Sapé (Imperata brasiliensis Trin.) is a perennial plant spreading by rhizomas and seeds, and constitutes a serious invader of molasses grass (Melinis minutiflora, Beauv.) pastures in the Zona da Mata of Minas Gerais State. Considering ways to deal with it, a pasture-renovation experiment was carried out in which the primary treatments were the application of a herbicide (41% A.I. at a rate of 41/ha), ploughing or burning. These were followed by seeding either with molasses grass, of 12% germination at a rate of 15 kg/ha, or with Brachiaria decumbens, of 60% germination at a rate of 4 kg/ha. The sowings were made with and without fertilizer, at a rate of 500kg of a 4-14-8 commercial mixture. These alternatives made up 12 treatment combinations of e 3 x 2 x 2 complete factorial, laid out in a randomised block design with three replications. The results indicated that burning was the least efficient way of controlling sapé. The most efficient and economic treatment, in terms of estimated replacement of the invader by desirable species, per unit cost, was ploughing followed by seeding with Brachiaria decumbens without fertilizer. |
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Methods of controlling sapé in molasses grass pasturesMétodos de controle do sapé em pastagem de capim-gorduraimpereta brasiliansis; weed control; herbicide; degraded pasture; pasture renovationimperata brasiliensis; controle de invasoras; herbicidas; pastagem degradada; recuperação de pastagemSapé (Imperata brasiliensis Trin.) is a perennial plant spreading by rhizomas and seeds, and constitutes a serious invader of molasses grass (Melinis minutiflora, Beauv.) pastures in the Zona da Mata of Minas Gerais State. Considering ways to deal with it, a pasture-renovation experiment was carried out in which the primary treatments were the application of a herbicide (41% A.I. at a rate of 41/ha), ploughing or burning. These were followed by seeding either with molasses grass, of 12% germination at a rate of 15 kg/ha, or with Brachiaria decumbens, of 60% germination at a rate of 4 kg/ha. The sowings were made with and without fertilizer, at a rate of 500kg of a 4-14-8 commercial mixture. These alternatives made up 12 treatment combinations of e 3 x 2 x 2 complete factorial, laid out in a randomised block design with three replications. The results indicated that burning was the least efficient way of controlling sapé. The most efficient and economic treatment, in terms of estimated replacement of the invader by desirable species, per unit cost, was ploughing followed by seeding with Brachiaria decumbens without fertilizer.O sapé (Imperata brasiliensis Trin.) é uma gramínea perene, que se propaga por meio de rizomas e sementes, constituindo séria invasora das pastagens na zona da Mata de Minas Gerais. Visando ao seu controle, foi conduzido um experimento com o objetivo de verificar a eficiência da aração, do herbicida (glyphosate 41%, na base de 41/ha), ou queima, em áreas fertilizadas (500 kg/ha de mistura comercial 4-14-8) e não-fertilizadas, com a semeadura do capim-gordura (Melinis minutiflora) ou capim-braquiária (Brachiaria decumbens), com 12% e 60% de valor cultural, e na proporção de 15 e 4 kg/ha, respectivamente. Estas alternativas foram combinadas de forma a constituírem doze tratamentos, arranjados num fatorial 3 x 2 x 2, e o experimento conduzido segundo delineamento de blocos ao acaso, com três repetições. Dentre os resultados de controle do sapé, a queima foi a menos eficiente, seguida da aração e do herbicida, sendo este o que proporcionou menor infestação da invasora A análise econômica mostrou ser a aração, seguida do plantio de capim-braquiária, em área não-fertilizada, o tratamento que apresentou a melhor eficiência econômica para o controle do sapé.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSouza, Ronaldo Mendes deTeixeira, Nilson MilagresTorres, Rodolpho de Almeida2014-10-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16128Pesquisa Agropecuaria Brasileira; v.20, n.8, ago. 1985; 963-967Pesquisa Agropecuária Brasileira; v.20, n.8, ago. 1985; 963-9671678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16128/10286info:eu-repo/semantics/openAccess2014-04-17T11:58:55Zoai:ojs.seer.sct.embrapa.br:article/16128Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-17T11:58:55Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Methods of controlling sapé in molasses grass pastures Métodos de controle do sapé em pastagem de capim-gordura |
title |
Methods of controlling sapé in molasses grass pastures |
spellingShingle |
Methods of controlling sapé in molasses grass pastures Souza, Ronaldo Mendes de impereta brasiliansis; weed control; herbicide; degraded pasture; pasture renovation imperata brasiliensis; controle de invasoras; herbicidas; pastagem degradada; recuperação de pastagem |
title_short |
Methods of controlling sapé in molasses grass pastures |
title_full |
Methods of controlling sapé in molasses grass pastures |
title_fullStr |
Methods of controlling sapé in molasses grass pastures |
title_full_unstemmed |
Methods of controlling sapé in molasses grass pastures |
title_sort |
Methods of controlling sapé in molasses grass pastures |
author |
Souza, Ronaldo Mendes de |
author_facet |
Souza, Ronaldo Mendes de Teixeira, Nilson Milagres Torres, Rodolpho de Almeida |
author_role |
author |
author2 |
Teixeira, Nilson Milagres Torres, Rodolpho de Almeida |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Souza, Ronaldo Mendes de Teixeira, Nilson Milagres Torres, Rodolpho de Almeida |
dc.subject.por.fl_str_mv |
impereta brasiliansis; weed control; herbicide; degraded pasture; pasture renovation imperata brasiliensis; controle de invasoras; herbicidas; pastagem degradada; recuperação de pastagem |
topic |
impereta brasiliansis; weed control; herbicide; degraded pasture; pasture renovation imperata brasiliensis; controle de invasoras; herbicidas; pastagem degradada; recuperação de pastagem |
description |
Sapé (Imperata brasiliensis Trin.) is a perennial plant spreading by rhizomas and seeds, and constitutes a serious invader of molasses grass (Melinis minutiflora, Beauv.) pastures in the Zona da Mata of Minas Gerais State. Considering ways to deal with it, a pasture-renovation experiment was carried out in which the primary treatments were the application of a herbicide (41% A.I. at a rate of 41/ha), ploughing or burning. These were followed by seeding either with molasses grass, of 12% germination at a rate of 15 kg/ha, or with Brachiaria decumbens, of 60% germination at a rate of 4 kg/ha. The sowings were made with and without fertilizer, at a rate of 500kg of a 4-14-8 commercial mixture. These alternatives made up 12 treatment combinations of e 3 x 2 x 2 complete factorial, laid out in a randomised block design with three replications. The results indicated that burning was the least efficient way of controlling sapé. The most efficient and economic treatment, in terms of estimated replacement of the invader by desirable species, per unit cost, was ploughing followed by seeding with Brachiaria decumbens without fertilizer. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-10-13 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/16128 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/16128 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/16128/10286 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.20, n.8, ago. 1985; 963-967 Pesquisa Agropecuária Brasileira; v.20, n.8, ago. 1985; 963-967 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
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Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
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Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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pab@sct.embrapa.br || sct.pab@embrapa.br |
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