Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5433/1679-0359.2011v32n2p473 http://hdl.handle.net/11449/42617 |
Resumo: | The family Meliaceae has been identified as one of the most promising for biological control, as most species have biologically active compounds. Among the species, the Neem (Azadirachta indica A. Juss) is that stands out most for its efficiency and low toxicity, and it is utilized to control insects, fungi and nematodes. The aim of this work was to verify the allelopathic potential of aqueous extract of fresh leaves of Neem on germination of lettuce, soybeans, maize, beans and Bidens pilosa, as a way to control this weed. The extract was obtained by grinding 200g/L of fresh leaves of the Neem (considered extract 100%) and diluting in distilled water at concentrations of 80, 60, 40, and 20%, and a control with only water. The seeds were kept in the germination chamber at a temperature of 25 degrees C, with photoperiod of 12 hours of light. The aqueous extract affected the germination percentage and average length root of lettuce, with values of 1% and 0.1, cm respectively. For the soybeans, the extract influenced negatively the average time of germination and average speed of germination. There was a drastic reduction of the average root length at higher concentration for soybean, corn and beans. For Bidens pilosa all the parameters analyzed were negatively affected, which means sensitivity to the extract. The bioassay performed in the laboratory showed that the aqueous extract of fresh leaves of Azadirachta indica has allelopathic effect on all species. |
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Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-pretoAllelopathic effect of aqueous extract of Azadirachta indica A. Juss. on lettuce, soybeans, maize, beans and Bidens pilosaAllelopathyNeemCropsWeedsThe family Meliaceae has been identified as one of the most promising for biological control, as most species have biologically active compounds. Among the species, the Neem (Azadirachta indica A. Juss) is that stands out most for its efficiency and low toxicity, and it is utilized to control insects, fungi and nematodes. The aim of this work was to verify the allelopathic potential of aqueous extract of fresh leaves of Neem on germination of lettuce, soybeans, maize, beans and Bidens pilosa, as a way to control this weed. The extract was obtained by grinding 200g/L of fresh leaves of the Neem (considered extract 100%) and diluting in distilled water at concentrations of 80, 60, 40, and 20%, and a control with only water. The seeds were kept in the germination chamber at a temperature of 25 degrees C, with photoperiod of 12 hours of light. The aqueous extract affected the germination percentage and average length root of lettuce, with values of 1% and 0.1, cm respectively. For the soybeans, the extract influenced negatively the average time of germination and average speed of germination. There was a drastic reduction of the average root length at higher concentration for soybean, corn and beans. For Bidens pilosa all the parameters analyzed were negatively affected, which means sensitivity to the extract. The bioassay performed in the laboratory showed that the aqueous extract of fresh leaves of Azadirachta indica has allelopathic effect on all species.Universidade Federal do Paraná (UFPR), Curso Mestrado Agron, BR-80035050 Curitiba, PR, BrazilUniversidade Estadual do Oeste do Paraná (UNIOESTE), UNIOESTE, Dept Ciencias Biol, BR-85819110 Cascavel, PR, BrazilUniv Estadual Paulista, UNESP, Curso Mestrado Agron, São Paulo, BrazilUniversidade Estadual do Oeste do Paraná (UNIOESTE), Curso Mestrado Conservacao & Manejo Recursos Nat, Cascavel, Parana, BrazilUniv Estadual Paulista, UNESP, Curso Mestrado Agron, São Paulo, BrazilUniversidade Estadual de Londrina (UEL)Universidade Federal do Paraná (UFPR)Universidade Estadual do Oeste do Paraná (UNIOESTE)Universidade Estadual Paulista (Unesp)Rickli, Helena CristinaTeixeira Fortes, Andrea MariaSiberti da Silva, Paulo Sergio [UNESP]Pilatti, Daiane MariaHutt, Daniele Regina2014-05-20T15:34:40Z2014-05-20T15:34:40Z2011-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article473-483application/pdfhttp://dx.doi.org/10.5433/1679-0359.2011v32n2p473Semina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 32, n. 2, p. 473-483, 2011.1676-546Xhttp://hdl.handle.net/11449/4261710.5433/1679-0359.2011v32n2p473WOS:000297934400008WOS000297934400008.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporSemina: Ciências Agrárias0.349info:eu-repo/semantics/openAccess2023-10-16T06:05:05Zoai:repositorio.unesp.br:11449/42617Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-16T06:05:05Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto Allelopathic effect of aqueous extract of Azadirachta indica A. Juss. on lettuce, soybeans, maize, beans and Bidens pilosa |
title |
Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto |
spellingShingle |
Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto Rickli, Helena Cristina Allelopathy Neem Crops Weeds |
title_short |
Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto |
title_full |
Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto |
title_fullStr |
Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto |
title_full_unstemmed |
Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto |
title_sort |
Efeito alelopático de extrato aquoso de folhas de Azadirachta indica A. Juss. em alface, soja, milho, feijão e picão-preto |
author |
Rickli, Helena Cristina |
author_facet |
Rickli, Helena Cristina Teixeira Fortes, Andrea Maria Siberti da Silva, Paulo Sergio [UNESP] Pilatti, Daiane Maria Hutt, Daniele Regina |
author_role |
author |
author2 |
Teixeira Fortes, Andrea Maria Siberti da Silva, Paulo Sergio [UNESP] Pilatti, Daiane Maria Hutt, Daniele Regina |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal do Paraná (UFPR) Universidade Estadual do Oeste do Paraná (UNIOESTE) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Rickli, Helena Cristina Teixeira Fortes, Andrea Maria Siberti da Silva, Paulo Sergio [UNESP] Pilatti, Daiane Maria Hutt, Daniele Regina |
dc.subject.por.fl_str_mv |
Allelopathy Neem Crops Weeds |
topic |
Allelopathy Neem Crops Weeds |
description |
The family Meliaceae has been identified as one of the most promising for biological control, as most species have biologically active compounds. Among the species, the Neem (Azadirachta indica A. Juss) is that stands out most for its efficiency and low toxicity, and it is utilized to control insects, fungi and nematodes. The aim of this work was to verify the allelopathic potential of aqueous extract of fresh leaves of Neem on germination of lettuce, soybeans, maize, beans and Bidens pilosa, as a way to control this weed. The extract was obtained by grinding 200g/L of fresh leaves of the Neem (considered extract 100%) and diluting in distilled water at concentrations of 80, 60, 40, and 20%, and a control with only water. The seeds were kept in the germination chamber at a temperature of 25 degrees C, with photoperiod of 12 hours of light. The aqueous extract affected the germination percentage and average length root of lettuce, with values of 1% and 0.1, cm respectively. For the soybeans, the extract influenced negatively the average time of germination and average speed of germination. There was a drastic reduction of the average root length at higher concentration for soybean, corn and beans. For Bidens pilosa all the parameters analyzed were negatively affected, which means sensitivity to the extract. The bioassay performed in the laboratory showed that the aqueous extract of fresh leaves of Azadirachta indica has allelopathic effect on all species. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-01-01 2014-05-20T15:34:40Z 2014-05-20T15:34:40Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.5433/1679-0359.2011v32n2p473 Semina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 32, n. 2, p. 473-483, 2011. 1676-546X http://hdl.handle.net/11449/42617 10.5433/1679-0359.2011v32n2p473 WOS:000297934400008 WOS000297934400008.pdf |
url |
http://dx.doi.org/10.5433/1679-0359.2011v32n2p473 http://hdl.handle.net/11449/42617 |
identifier_str_mv |
Semina-ciencias Agrarias. Londrina: Universidade Estadual de Londrina (UEL), v. 32, n. 2, p. 473-483, 2011. 1676-546X 10.5433/1679-0359.2011v32n2p473 WOS:000297934400008 WOS000297934400008.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Semina: Ciências Agrárias 0.349 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
473-483 application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Londrina (UEL) |
publisher.none.fl_str_mv |
Universidade Estadual de Londrina (UEL) |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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