Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications.
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1155238 https://doi.org/10.5539/jas.v15n8p23 |
Resumo: | The objective of this research was to carry out a survey of weeds in pastures in the Middle Valley of Paraíba do Sul, Rio de Janeiro State, Brazil, in order to subsidize weed management and pasture recovery. Weed identification and plant count were carried out in pastures with four levels of degradation, classified as low (N1), moderate (N2), strong (N3) and very strong (N4), with five replications. Thirty-nine weed species were identified and distributed into16 botanical families. Poaceae, Asteraceae and Fabaceae were the most relevant families. The number and density of weeds increased as the level of degradation decreased. The relative importance of weed species varied with the level of degraded pasture. The main weeds found in N1 were Melinis minutiflora, Desmodium incanum, Croton lundianus, Andropogon bicornis, and Imperata brasiliensis; in N2: Paspalum notatum, Melinis minutiflora, Imperata brasiliensis, Sida rhombifolia, and Desmodium incanum; in N3: Paspalum notatum, Melinis minutiflora, Sida rhombifolia, Eupatorium maximilianii, and Imperata brasiliensis; in N4: Paspalum notatum, Melinis minutiflora, Cynodon dactilon, Eupatorium maximilianii, and Imperata brasiliensis. The similarity index was high, showing the homogeneity of weeds among areas. The predominant species, considering all areas, were in increasing order of importance: Cynodon dactilon, Melinis minutiflora and Paspalum notatum. Decision-making about applying control measures could be marked out when the plant density reached out or exceed the average of 3.58 plants m-2. |
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Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications.Recovery of degraded pasturesUnwanted plantsPastagem degradadaRecuperaçãoPlanta daninhaPecuáriaPastagemErva DaninhaLivestockThe objective of this research was to carry out a survey of weeds in pastures in the Middle Valley of Paraíba do Sul, Rio de Janeiro State, Brazil, in order to subsidize weed management and pasture recovery. Weed identification and plant count were carried out in pastures with four levels of degradation, classified as low (N1), moderate (N2), strong (N3) and very strong (N4), with five replications. Thirty-nine weed species were identified and distributed into16 botanical families. Poaceae, Asteraceae and Fabaceae were the most relevant families. The number and density of weeds increased as the level of degradation decreased. The relative importance of weed species varied with the level of degraded pasture. The main weeds found in N1 were Melinis minutiflora, Desmodium incanum, Croton lundianus, Andropogon bicornis, and Imperata brasiliensis; in N2: Paspalum notatum, Melinis minutiflora, Imperata brasiliensis, Sida rhombifolia, and Desmodium incanum; in N3: Paspalum notatum, Melinis minutiflora, Sida rhombifolia, Eupatorium maximilianii, and Imperata brasiliensis; in N4: Paspalum notatum, Melinis minutiflora, Cynodon dactilon, Eupatorium maximilianii, and Imperata brasiliensis. The similarity index was high, showing the homogeneity of weeds among areas. The predominant species, considering all areas, were in increasing order of importance: Cynodon dactilon, Melinis minutiflora and Paspalum notatum. Decision-making about applying control measures could be marked out when the plant density reached out or exceed the average of 3.58 plants m-2.ALEXANDRE MAGNO B DOS SANTOS, CNPGL; TAINÁ LINHARES, BOLSISTA; NATÁSSIA MAGALHÃES ARMACOLO, UNIVERSIDADE ESTADUAL DE LONDRINA; GUILHERME KANGUSSU DONAGEMMA, CNPS; ADEMIR FONTANA, CNPS; FABIANO DE CARVALHO BALIEIRO, CNPS.BRIGHENTI, A. M.LINHARES, T.ARMACOLO, N. M.DONAGEMMA, G. K.FONTANA, A.BALIEIRO, F. de C.2023-07-25T12:24:04Z2023-07-25T12:24:04Z2023-07-252023info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleJournal of Agricultural Science, v. 15, n. 8, p. 23-34, 2023.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1155238https://doi.org/10.5539/jas.v15n8p23enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2023-07-25T12:24:04Zoai:www.alice.cnptia.embrapa.br:doc/1155238Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542023-07-25T12:24:04falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542023-07-25T12:24:04Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications. |
title |
Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications. |
spellingShingle |
Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications. BRIGHENTI, A. M. Recovery of degraded pastures Unwanted plants Pastagem degradada Recuperação Planta daninha Pecuária Pastagem Erva Daninha Livestock |
title_short |
Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications. |
title_full |
Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications. |
title_fullStr |
Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications. |
title_full_unstemmed |
Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications. |
title_sort |
Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications. |
author |
BRIGHENTI, A. M. |
author_facet |
BRIGHENTI, A. M. LINHARES, T. ARMACOLO, N. M. DONAGEMMA, G. K. FONTANA, A. BALIEIRO, F. de C. |
author_role |
author |
author2 |
LINHARES, T. ARMACOLO, N. M. DONAGEMMA, G. K. FONTANA, A. BALIEIRO, F. de C. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
ALEXANDRE MAGNO B DOS SANTOS, CNPGL; TAINÁ LINHARES, BOLSISTA; NATÁSSIA MAGALHÃES ARMACOLO, UNIVERSIDADE ESTADUAL DE LONDRINA; GUILHERME KANGUSSU DONAGEMMA, CNPS; ADEMIR FONTANA, CNPS; FABIANO DE CARVALHO BALIEIRO, CNPS. |
dc.contributor.author.fl_str_mv |
BRIGHENTI, A. M. LINHARES, T. ARMACOLO, N. M. DONAGEMMA, G. K. FONTANA, A. BALIEIRO, F. de C. |
dc.subject.por.fl_str_mv |
Recovery of degraded pastures Unwanted plants Pastagem degradada Recuperação Planta daninha Pecuária Pastagem Erva Daninha Livestock |
topic |
Recovery of degraded pastures Unwanted plants Pastagem degradada Recuperação Planta daninha Pecuária Pastagem Erva Daninha Livestock |
description |
The objective of this research was to carry out a survey of weeds in pastures in the Middle Valley of Paraíba do Sul, Rio de Janeiro State, Brazil, in order to subsidize weed management and pasture recovery. Weed identification and plant count were carried out in pastures with four levels of degradation, classified as low (N1), moderate (N2), strong (N3) and very strong (N4), with five replications. Thirty-nine weed species were identified and distributed into16 botanical families. Poaceae, Asteraceae and Fabaceae were the most relevant families. The number and density of weeds increased as the level of degradation decreased. The relative importance of weed species varied with the level of degraded pasture. The main weeds found in N1 were Melinis minutiflora, Desmodium incanum, Croton lundianus, Andropogon bicornis, and Imperata brasiliensis; in N2: Paspalum notatum, Melinis minutiflora, Imperata brasiliensis, Sida rhombifolia, and Desmodium incanum; in N3: Paspalum notatum, Melinis minutiflora, Sida rhombifolia, Eupatorium maximilianii, and Imperata brasiliensis; in N4: Paspalum notatum, Melinis minutiflora, Cynodon dactilon, Eupatorium maximilianii, and Imperata brasiliensis. The similarity index was high, showing the homogeneity of weeds among areas. The predominant species, considering all areas, were in increasing order of importance: Cynodon dactilon, Melinis minutiflora and Paspalum notatum. Decision-making about applying control measures could be marked out when the plant density reached out or exceed the average of 3.58 plants m-2. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-25T12:24:04Z 2023-07-25T12:24:04Z 2023-07-25 2023 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Journal of Agricultural Science, v. 15, n. 8, p. 23-34, 2023. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1155238 https://doi.org/10.5539/jas.v15n8p23 |
identifier_str_mv |
Journal of Agricultural Science, v. 15, n. 8, p. 23-34, 2023. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1155238 https://doi.org/10.5539/jas.v15n8p23 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503547443740672 |