Seletividade de cultivares de soja RR® submetidos a misturas em tanque de glyphosate + chlorimuron-ethyl associadas a óleo mineral e inseticidas

Maciel, Cleber Daniel de Góes; Amstalden, Saulo Leme; Raimondi, Michel Alex; Lima, Gesley Ramos Guimarães; Neto, Antônio Mendes Oliveira; Artuzi, Jorge Paulo

doi:10.1590/s0100-83582009000400014

Cited by 15 publications

(14 citation statements)

References 12 publications

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“…ha -1 ), in pre-sowing did not reduce productivity in soybean RR. The same was observed by Maciel et al (2009) for application in post-emergence of glyphosate + chlorimuron-ethyl (960 g a.e. ha -1 + 10 g a.i.…”

Section: / 1/supporting

confidence: 72%

Application of Post-Emergence ALS Inhibitor Herbicides Associated or Not to Glyphosate in RR/STS Soybean

Silva

Albrecht

et al. 2016

Planta daninha

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-The aim of this study was to evaluate the selectivity of ALS inhibitor herbicides, applied isolated and associated with glyphosate in post-emergence of soybean cultivar presenting the RR/STS technologies. The experimental design was a randomized block with four replications and ten treatments. The treatments consisted of the application of glyphosate and ALS inhibitors herbicides, isolated and associated with glyphosate. The application of treatments occurred in V4 stage of plant development. The evaluation of phytointoxication, SPAD index was conducted, as well as variables related to agronomic performance (height, number of pods per plant, yield and mass of a thousand seeds). Yet additional test with the same cultivar and treatment was conducted in a greenhouse in a completely randomized design with four replications. Soybean cultivar CD 2630 RR/STS presented itself tolerant to application in post-emergence herbicides used alone or combined with glyphosate. Except to metsulfuron-methyl (2.4 g a.i. ha -1 ), associated or not with glyphosate (960 g a.e. ha -1 ).Keywords: sulfonylurea tolerant soybeans, phytointoxication, chemical management, Glycine max. Palavras-chave: soja tolerante as sulfoniluréias, fitointoxicação, manejo químico, Glycine max. RESUMO -O objetivo do presente trabalho foi avaliar a seletividade de herbicidas inibidores da ALS, aplicados isoladamente e associados com glyphosate, em pós-emergência de cultivar de soja contendo as tecnologias RR/STS. O delineamento experimental foi de blocos casualizados, com quatro repetições e dez tratamentos. Os tratamentos foram constituídos da aplicação de glyphosate e herbicidas inibidores da ALS, isolados e associados com glyphosate. A aplicação dos tratamentos

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Section: / 1/supporting

confidence: 72%

Application of Post-Emergence ALS Inhibitor Herbicides Associated or Not to Glyphosate in RR/STS Soybean

Silva

Albrecht

et al. 2016

Planta daninha

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“…The repetitive use of glyphosate lead to the selection of resistant and/or tolerant weed biotypes to this herbicide. As examples, B. latifolia is known to be tolerant to glyphosate (Gazziero & Prette, 2005;Maciel et al, 2009), and woody borreria (B. verticillata syn. Hedyotis verticillata) was found to be resistant to both paraquat and glyphosate in oil palm plantations from Malaysia (Chuah et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

Herbicide efficacy on Borreria densiflora control in pre- and post-emergence conditions

Martins

Christoffoleti

2014

Planta daninha

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-The weed Borreria densiflora is a management issue in soybean and sugarcane crops from North and Northeastern Brazil. Knowledge upon chemical control of B. densiflora contributes to the integrated management of this weed species, especially when active ingredient options become reduced due to the selection of herbicide resistant or tolerant weed species. Experiments in pre-and post-emergence of B. densiflora were conducted in greenhouse, in a randomized block design and four replications. In pre-emergence, the doseresponse curve methodology was used and 7 herbicides were tested. In post-emergence, 9 herbicides at the recommended rate and 4 herbicide mixtures were tested. For pre and post-emergence conditions, evaluations were conducted at 60 and 21 days after treatment (DAT), respectively, and the variables analyzed were weed control and dry weight (%). The results showed options of pre-emergent herbicides that can be used for controlling B. densiflora, especially in sugarcane, where chemical weed control is mainly based on preemergent applications. In the current glyphosate resistance scenario, one should consider the use of pre-emergent herbicides within an integrated management of B. densiflora. For satisfactory post-emergence control, B. densiflora plants should be sprayed at the phenological stage of up to three pairs of leaves. Herbicide mixtures have been and will continue to be an important tool in chemical weed management, broadening the spectrum of weed control, while diversifying herbicide mechanisms of action, which helps to prevent or delay the appearance of herbicide resistance.Keywords: vassourinha-de-botão, chemical control, dose-response, herbicide mixtures, integrated weed management. Palavras-chave: vassourinha-de-botão, controle químico, dose-resposta, mistura de herbicidas, manejo integrado de plantas daninhas. RESUMO -A planta daninhaMARTINS, B

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“…Dentre os métodos de controle de plantas daninhas mais utilizados na cultura do milho destaca-se o controle químico (CARVALHO et al, 2010), sendo a mistura de herbicidas uma alternativa para aumentar o espectro de espécies controladas e evitar o aparecimento de biótipos resistentes (OWEN;ZELAYA, 2005;MACIEL et al, 2009). Entre os herbicidas recomendados em pós-emergência para o milho, utilizados associados ou isolados, destacam-se: atrazine, nicosulfuron, bentazon, mesotrione e tembotrione (RODRIGUES; ALMEIDA, 2011).…”

Section: Introductionunclassified

Eficiência de herbicidas aplicados em pós-emergência em milho consorciado com Urochloa brizantha cv. Marandu

Rezende¹,

Jakelaitis²,

Moraes³

et al. 2014

Agro@mbiente

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Resumo -O consórcio entre a cultura do milho e espécies forrageiras tem sido amplamente utilizado na região do Cerrado visando à formação ou renovação de pastagens. A eficiência do consórcio pode ser obtida pela supressão da competição entre as espécies consorciadas com o uso de doses reduzidas de herbicidas seletivos à cultura do milho. Objetivou-se com este trabalho avaliar diferentes herbicidas aplicados em pós-emergência no desempenho produtivo do consórcio entre o milho e o capim-marandu (Urochloa brizantha cv. Marandu). Utilizou-se o delineamento de blocos ao acaso, com 11 tratamentos e 4 repetições, sendo testados: tembotrione (42 g ha -1 ), tembotrione+atrazine (42+1.500 g ha -1 ), tembotrione+bentazon (42+720 g ha -1 ), nicosulfuron+atrazine (4+1.500 g ha -1 e 8+1.500 g ha -1 ), nicosulfuron+bentazon (4+720 g ha -1 e 8+720 g ha -1 ), atrazine (3.000 g ha -1 ) e bentazon (960 g ha -1 ), além de duas testemunhas (capinada e não capinada). Os herbicidas contribuíram para a supressão das plantas daninhas, principalmente de dicotiledôneas, em avaliações realizadas na colheita do milho. O tembotrione e o nicosulfuron associados com atrazine e bentazon reduziram o rendimento da forrageira, sem afetar a relação folha:colmo (RFC). Quanto ao rendimento de grãos de milho, não foram observadas diferenças significativas entre os métodos de controle de plantas daninhas. Todavia, houve redução do rendimento do milho e do capim-marandu, quando submetidos à convivência com a infestação de plantas daninhas. Palavras-chave -Capim-marandu. Plantas daninhas. Zea mays.Abstract -In the Cerrado region the consortium between corn and forage grass has been widely used aiming at establishment or renovation of pasture. The efficiency of the consortium can be obtained by suppression of competition between species consorts with the use of reduced doses of selective herbicides to corn. The objective of this study was to test different herbicides applied postemergence on growth performance of maize and Urochloa brizantha cv. Marandu intercropping. The randomized block design was used with four replicates. The treatments tested were tembotrione (42 g ha -1 ), tembotrione+atrazine (42+1,500 g ha -1 , respectively), tembotrione+bentazon (42+720 g ha -1 , respectively), atrazine+nicosulfuron (4+1,500 g ha -1 and 8+1,500 g ha -1 , respectively), nicosulfuron+bentazon (4+720 g ha -1 and 8+720 g ha -1 , respectively), atrazine (3,000 g ha -1 ) and bentazon (960 g ha -1 ) and two witnesses (weeded and no hoed). Herbicides contributed to weed suppression, mainly dicotyledonous, in evaluations corn harvest. The tembotrione and nicosulfuron associated with atrazine and bentazon herbicides reduced forage yield, without affecting the leaf:stem ratio. As for the grain yield of maize not differences between statistical methods of weed control were observed. However, reduction in the yield of corn and palisade grass, when subjected to live with the weed infestation.

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Seletividade de cultivares de soja RR® submetidos a misturas em tanque de glyphosate + chlorimuron-ethyl associadas a óleo mineral e inseticidas

Cited by 15 publications

References 12 publications

Application of Post-Emergence ALS Inhibitor Herbicides Associated or Not to Glyphosate in RR/STS Soybean

Application of Post-Emergence ALS Inhibitor Herbicides Associated or Not to Glyphosate in RR/STS Soybean

Herbicide efficacy on Borreria densiflora control in pre- and post-emergence conditions

Eficiência de herbicidas aplicados em pós-emergência em milho consorciado com Urochloa brizantha cv. Marandu

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