HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT
Main Author: | |
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Publication Date: | 1995 |
Other Authors: | , |
Format: | Article |
Language: | por |
Source: | Pesquisa Agropecuária Gaúcha (Online) |
Download full: | http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/560 |
Summary: | A field experiment was carried out on a plinthosol at the Agronomic Experimental Station, Federal University of Rio Grande do Sul, located in Eldorado do Sul (30 ° 05' 52" 5, 51' 39 08" W), from October 1993 to July 1994, to evaluate eleven herbicides on weed control and herbicide selectivity to alfalfa. The herbicides were tested when alfalfa was at the seedling establishment stage. Two control treatments were included: with and weed-free plots. A randomized complete block design with four replications was used. Treatment effects were evaluated in terms of alfalfa seedling number after germination, alfalfa early growth and herbicide injury, control of pigweed (Amaranthus deflexus L.) and Brazil pusley (Richardia brasiliensis Gomez). Alfalfa and weed dry matter yields after four harvests were also considered. EPTC (4000 gai/ha) preplant incorporated (PPI), trifluralin (2400 gailha) preemergence (PRE) and imazethapyr (100 galha) postemergence (POST) showed the best overall performance when selectivity, weed control and alfalfa DM yield are considered as a set of relevant agronomic parameters to the alfalfa crops. The herbicides linuron and exadiazon were very toxic to alfalfa. |
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HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT HERBICIDAS NO CONTROLE DE PLANTAS DANINHAS E SELETIVIDADE À ALFAFA (Medicago saliva L.) DURANTE A FASE DE ESTABELECIMENTOAlfalfa, Weed, Herbicide, Amaranthus deflexus L., Richardia brasiliensis GomezAlfafa, planta daninha, herbicida, Amaranthus deflexus L., Richardia brasiliensis Gomez A field experiment was carried out on a plinthosol at the Agronomic Experimental Station, Federal University of Rio Grande do Sul, located in Eldorado do Sul (30 ° 05' 52" 5, 51' 39 08" W), from October 1993 to July 1994, to evaluate eleven herbicides on weed control and herbicide selectivity to alfalfa. The herbicides were tested when alfalfa was at the seedling establishment stage. Two control treatments were included: with and weed-free plots. A randomized complete block design with four replications was used. Treatment effects were evaluated in terms of alfalfa seedling number after germination, alfalfa early growth and herbicide injury, control of pigweed (Amaranthus deflexus L.) and Brazil pusley (Richardia brasiliensis Gomez). Alfalfa and weed dry matter yields after four harvests were also considered. EPTC (4000 gai/ha) preplant incorporated (PPI), trifluralin (2400 gailha) preemergence (PRE) and imazethapyr (100 galha) postemergence (POST) showed the best overall performance when selectivity, weed control and alfalfa DM yield are considered as a set of relevant agronomic parameters to the alfalfa crops. The herbicides linuron and exadiazon were very toxic to alfalfa. Foi conduzido na Estação Experimental Agronômica da UFRGS, Eldorado do Sul, RS, de outubro de 1993 à julho de 1994; um experimento para avaliação de onze herbicidas aplicados na fase de estabelecimento da alfafa, incluindo duas testemunhas: cultura não-infestada e infestada por plantas daninhas. O delineamento experimental foi em blocos com- pletos casualizados com quatro repetições. As ,avaliações constaram de: contagem de plantas emergidas e desenvolvimento inicial da alfafa, níveis de dano sobre a cultura e de controle sobre caruru (Amaranthus deflexus L.) , e poaia (Richardia brasiliensis Gomez), e produção da matéria seca de alfafa e plantas daninhas obtidas em quatro cortes. EPTC (4000 gia/ha) em pré-semeadura e incorporado ao solo, trifluralin (2400 gia/ha) em pré-emergência e imazethapyr (100 gia/ha) em pós- emergência apresentaram melhor desempenho quando a seletividade, controle das plantas daninhas e rendimento de MS da alfafa são considerados como um conjunto parâmetros agronômicos importantes para a cultura da alfafa. Os herbicidas linuron e oxadiazon revelaram-se muito tóxicos à alfafa. Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural1995-10-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/560Pesquisa Agropecuária Gaúcha; Vol 2 No 1 (1996): PESQ. AGROP. GAÚCHA; 47-55Pesquisa Agropecuária Gaúcha; v. 2 n. 1 (1996): PESQ. AGROP. GAÚCHA; 47-552595-76860104-9070reponame:Pesquisa Agropecuária Gaúcha (Online)instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulinstacron:SEAPDRporhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/560/516PETRY, LUIZ AUGUSTO SAIBRO, JOÃO CARLOS FLECK, NILSON GILBERTO info:eu-repo/semantics/openAccess2024-04-22T12:01:36Zoai:ojs.revistapag.agricultura.rs.gov.br:article/560Revistahttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapagPUBhttp://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/oaipag@agricultura.rs.gov.br||2595-76860104-9070opendoar:2024-04-22T12:01:36Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sulfalse |
dc.title.none.fl_str_mv |
HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT HERBICIDAS NO CONTROLE DE PLANTAS DANINHAS E SELETIVIDADE À ALFAFA (Medicago saliva L.) DURANTE A FASE DE ESTABELECIMENTO |
title |
HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT |
spellingShingle |
HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT PETRY, LUIZ AUGUSTO Alfalfa, Weed, Herbicide, Amaranthus deflexus L., Richardia brasiliensis Gomez Alfafa, planta daninha, herbicida, Amaranthus deflexus L., Richardia brasiliensis Gomez |
title_short |
HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT |
title_full |
HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT |
title_fullStr |
HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT |
title_full_unstemmed |
HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT |
title_sort |
HERBICIDES ON WEED CONTROL AND SELECTIVITY TO ALFALFA (Medicago saliva L.) DURING ESTABLISHMENT |
author |
PETRY, LUIZ AUGUSTO |
author_facet |
PETRY, LUIZ AUGUSTO SAIBRO, JOÃO CARLOS FLECK, NILSON GILBERTO |
author_role |
author |
author2 |
SAIBRO, JOÃO CARLOS FLECK, NILSON GILBERTO |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
PETRY, LUIZ AUGUSTO SAIBRO, JOÃO CARLOS FLECK, NILSON GILBERTO |
dc.subject.por.fl_str_mv |
Alfalfa, Weed, Herbicide, Amaranthus deflexus L., Richardia brasiliensis Gomez Alfafa, planta daninha, herbicida, Amaranthus deflexus L., Richardia brasiliensis Gomez |
topic |
Alfalfa, Weed, Herbicide, Amaranthus deflexus L., Richardia brasiliensis Gomez Alfafa, planta daninha, herbicida, Amaranthus deflexus L., Richardia brasiliensis Gomez |
description |
A field experiment was carried out on a plinthosol at the Agronomic Experimental Station, Federal University of Rio Grande do Sul, located in Eldorado do Sul (30 ° 05' 52" 5, 51' 39 08" W), from October 1993 to July 1994, to evaluate eleven herbicides on weed control and herbicide selectivity to alfalfa. The herbicides were tested when alfalfa was at the seedling establishment stage. Two control treatments were included: with and weed-free plots. A randomized complete block design with four replications was used. Treatment effects were evaluated in terms of alfalfa seedling number after germination, alfalfa early growth and herbicide injury, control of pigweed (Amaranthus deflexus L.) and Brazil pusley (Richardia brasiliensis Gomez). Alfalfa and weed dry matter yields after four harvests were also considered. EPTC (4000 gai/ha) preplant incorporated (PPI), trifluralin (2400 gailha) preemergence (PRE) and imazethapyr (100 galha) postemergence (POST) showed the best overall performance when selectivity, weed control and alfalfa DM yield are considered as a set of relevant agronomic parameters to the alfalfa crops. The herbicides linuron and exadiazon were very toxic to alfalfa. |
publishDate |
1995 |
dc.date.none.fl_str_mv |
1995-10-20 |
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 |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/560 |
url |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/560 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://revistapag.agricultura.rs.gov.br/ojs/index.php/revistapag/article/view/560/516 |
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 |
Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural |
publisher.none.fl_str_mv |
Departamento de Diagnóstico e Pesquisa Agropecuária. Secretaria de Agricultura, Pecuária e Desenvolvimento Rural |
dc.source.none.fl_str_mv |
Pesquisa Agropecuária Gaúcha; Vol 2 No 1 (1996): PESQ. AGROP. GAÚCHA; 47-55 Pesquisa Agropecuária Gaúcha; v. 2 n. 1 (1996): PESQ. AGROP. GAÚCHA; 47-55 2595-7686 0104-9070 reponame:Pesquisa Agropecuária Gaúcha (Online) instname:Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul instacron:SEAPDR |
instname_str |
Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul |
instacron_str |
SEAPDR |
institution |
SEAPDR |
reponame_str |
Pesquisa Agropecuária Gaúcha (Online) |
collection |
Pesquisa Agropecuária Gaúcha (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Gaúcha (Online) - Secretaria de Agricultura, Pecuária e Desenvolvimento Rural do Rio Grande do Sul |
repository.mail.fl_str_mv |
pag@agricultura.rs.gov.br|| |
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1797068773792940032 |