Phytosociological survey of weeds on degraded and well-managed pastures: agronomical and ecological implications.

Detalhes bibliográficos
Autor(a) principal: BRIGHENTI, A. M.
Data de Publicação: 2023
Outros Autores: LINHARES, T., ARMACOLO, N. M., DONAGEMMA, G. K., FONTANA, A., BALIEIRO, F. de C.
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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spelling 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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