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ACCase-inhibiting herbicides: mechanism of action, resistance evolution and stewardship Scientia Agricola
Takano,Hudson Kagueyama; Ovejero,Ramiro Fernando Lopez; Belchior,Gustavo Gross; Maymone,Gizella Potrich Leal; Dayan,Franck E..
ABSTRACT Herbicides play an important role in preventing crop yield losses due to both their weed interference ability and their capacity for increasing soil conservation in no-till systems. Group A herbicides or acetyl-CoA carboxylase (ACCase) are essential tools the selective management of glyphosate resistance in grass weed species. In this review, we describe important aspects of ACCase biology and herbicides targeting this enzyme, along with a discussion on stewardship programs to delay the evolution of herbicide resistance which can evolve either through target site and/or non-target site mechanisms. Sixteen-point mutations have been reported to confer resistance to ACCase inhibitors. Each mutation confers cross resistance to a different group of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbicide resistance; Integrated weed management; Aryloxyphenoxypropionates; Cyclohexanediones; Phenylpyrazoline.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000101301
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Association of chemical and mechanical weed control methods during the pre-harvest of coffee crops Planta Daninha
P. Ronchi,Cláudio.
Abstract Background: Weed control in the pre-harvest of the coffee crop is essential to enable mechanized coffee harvesting. Objective: Testing the efficacy of pre-emergent herbicides, applied after brush shredder or desiccation operations, on the weed control during the coffee crop’s pre-harvest. Methods: Two separate trials were accomplished in commercial Coffea arabica crops in the Cerrado Mineiro Region. In the first one, oxyfluorfen and sulfentrazone were applied after either brush shredder or burndown operation; in the second, they were tested as a tank mixture with glyphosate. Results: In the first assay, the brush shredder use, associated to the rains that follow, stimulated a sharp weed infestation during the pre-harvest, which was not...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea arabica; Burndown; Herbicide; Integrated weed management.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100329
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Bioeconomic evaluation of allelopathic crop leachates integrated with reduced doses of herbicide for horse purslane management in maize under field conditions Planta Daninha
N. Mushtaq,Muhammad; I. Hashmi,Muhammad; Tariq,Tabinda; Matloob,Amar; Hussain,Safdar; A. Cheema,Zahid.
Abstract Background: Continuous use of commercial herbicides is posing a severe threat to environment and creating herbicide resistant weeds. Allelopathy offers a promising alternative to commercial herbicides for sustainable weed management. The farmers are highly concerned with maximum yield as well as cost of the weed control techniques. Objective: To investigate economic and weed control efficiency of allelopathic crop water leachates mixed with lower rates of herbicide. Methods: Rapeseed (Brassica napus L.), sunflower (Helianthus annuus L.) and sorghum (Sorghum bicolor L.) crop leachates (18 L ha-1 each) tank mixed with lower doses (25, 33 and 50% of recommended dose) of S-metolachlor+atrazine were sprayed as pre-emergence for horse purslane...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allelopathy; Bioeconomic; Integrated weed management; Marginal analysis; Trianthema portulacastrum; Zea mays.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100317
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Comparação do desempenho ambiental da soja em sistema convencional e em manejo integrado de pragas e de doenças (MIP-MID) por meio da metodologia de avaliação do ciclo de vida (ACV). Repositório Alice
LUCAS, K. R. G.; MATSUURA, M. I. da S. F.; VENTURA, M. U.; RALISCH, R.; PICOLI, J. F.; BARRANTES, L. D. S.; ASSUMPCIÓ, A..
Resumo: O controle fitossanitário sempre foi uma preocupação na atividade agrícola, entretanto, o risco que os agrotóxicos oferecem ao meio ambiente e à saúde humana é intensamente debatido pela sociedade. Uma alternativa para redução desses riscos são os sistemas integrados de controle, que diminuiriam o impacto ambiental. O objetivo deste trabalho foi avaliar o desempenho ambiental, empregando a Avaliação do Ciclo de Vida (ACV), do controle calendarizado em soja, comparada à produção de soja em um sistema de Manejo Integrado de Pragas e Doenças (MIP-MID). O inventário do sistema convencional (calendarizado) foi produzido por meio de consultas a produtores da microbacia do Ribeirão Lagosta, no município de Rolândia ? PR, e o inventário do sistema MIP-MID,...
Tipo: Separatas Palavras-chave: Avaliação do ciclo de vida; Manejo integrado.; Agrotóxico; Toxidez; Doença de planta; Praga de planta; Controle integrado; Impacto ambiental.; Integrated crop management; Integrated pest management; Integrated weed management; Life cycle impact assessment; Soybeans.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1103029
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Comparativo entre controle químico, mecânico e integrado o manejo de Conyza bonariensis resistente ao glifosato. Repositório Alice
FERREIRA, P. R. S.; FORNAROLLI, D. A.; ANGHNONI, T.; OLIVEIRA, D. C.; GAZZIERO, D. L. P..
Avaliou-se a influência do controle químico e mecânico de diferentes intervalos entre aplicações de herbicidas à base de glifosato, 2,4-D isolados e combinados e roçadas, estas após aplicações dos mesmos herbicidas e também aplicações de herbicidas à base de paraquat, em sequencial aos herbicidas citados, além do uso de outros ativos tais como o diclosulam e chlorimuron, no município de Juranda/PR, 2010. As avaliações visuais foram realizadas aos 10, 20 e 30 DAA (Dias Após Aplicação), através da porcentagem de controle de 0 (nenhum controle) a 100% (morte completa). Os resultados aos 30DAA mostraram que o glifosato associado ao 2,4-D e posterior sequencial com paraquat, promoveu controle em torno de 80% (mínimo aceitável), glifosato+2,4-D+diclosulam ou...
Tipo: Parte de livro Palavras-chave: Erva daninha; Controle químico; Herbicida; Controle integrado; Controle mecânico; Weeds; Integrated weed management; Herbicides.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/934950
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Control of Italian ryegrass and Alexandergrass in corn using different corn sowing date, pre- and post-emergent herbicides. Repositório Alice
PIASECKI, C.; OVEJERO, R. F. L.; PICOLI JUNIOR, G. J.; BELLINI, L. F.; AGOSTINETTO, D.; VARGAS, L..
Glyphosate-resistant (GR) Italian ryegrass (LOLMU) and Alexandergrass (URPLA) are troublesome weeds in corn cropping systems in Southern Brazil. The emergence pattern of those weeds is not uniform and may change according to the season?s environmental characteristics. Also, herbicide resistance has been diminishing the success of the weed control programs. The objectives of this study were to evaluate the influence of corn-sowing date on LOLMU and URPLA densities and their control provided by pre- and post-emergent herbicides. Field trials were conducted in two crop seasons in Southern Brazil consisting of three corn sowing date (August, September, and October) and the application of atrazine + S-metolachlor (residual) in corn pre-emergence in different...
Tipo: Artigo de periódico Palavras-chave: Residual; Herbicide resistance management; S-metolachlor; Atrazine; Integrated weed management.
Ano: 2020 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1129874
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Economic analysis of integrated weed management strategies for annual barnyardgrass (Echinochloa crus-galli complex) in Philippine rice farming systems AgEcon
Beltran, Jesusa C.; Pannell, David J.; Doole, Graeme J.; White, Benedict.
This paper describes a dynamic simulation model that has been developed to provide a comprehensive assessment of integrated weed management programmes for the control of annual barnyardgrass (Echinochloa crus-galli complex) in Philippine rice farming systems. The main outputs of the model include weed seed and plant densities and seasonal and annualised profit over the simulated planning horizon. Model output emphasises the substantial economic benefits associated with effective long-term weed management strategies. In addition, a mixture of chemical and non-chemical treatments provides good weed control in rice crops, and maximises long-term profit for systems where the main weed is annual barnyardgrass. However, the performance of this strategy is...
Tipo: Presentation Palavras-chave: Barnyardgrass; Bioeconomic model; Integrated weed management; Rice farming systems.; Crop Production/Industries.
Ano: 2012 URL: http://purl.umn.edu/124236
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Economic impacts of high labour cost and herbicide resistance for the management of annual barnyardgrass (Echinochloa crus-galli) in rice production in the Philippines AgEcon
Beltran, Jesusa C.; Pannell, David J.; Doole, Graeme J..
Implications of increasing labour cost and development of herbicide resistance for profitable weed management in Philippine rice farming systems are investigated. The study employs RIMPhil (Resistance and Integrated Management in the Philippines), a bioeconomic simulation model developed to provide a comprehensive assessment of integrated weed management programmes for the control of annual barnyardgrass (Echinochloa crus-galli) in rice crops. Results indicate that herbicide application will become increasingly economically attractive, relative to manual weeding, as labour cost increases. This is important since urban migration in the Philippines continues to increase the scarcity of rural labour. Results also show that the onset of herbicide resistance...
Tipo: Working or Discussion Paper Palavras-chave: Barnyardgrass; Bioeconomic model; Herbicide resistance; Integrated weed management; Rice production; Crop Production/Industries; Farm Management; Research and Development/Tech Change/Emerging Technologies.
Ano: 2011 URL: http://purl.umn.edu/108770
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Eighteen years of Clearfield rice in Brazil: what have we learned?. Repositório Alice
AVILA, L. A. de; MARCHESAN, E.; CAMARGO, E. R.; MEROTTO JR. A.; ULGUIM. A, da R.; NOLDIN, J. A.; ANDRES, A.; MARIOT, C. P.; AGOSTINETTO, D.; DORNELLES, S. H. B.; MARKUS, C..
Tipo: Artigo de periódico Palavras-chave: Resistance to imidazolinone herbicides; Sustainable weed management; Weed resistance; Integrated weed management; Red rice.
Ano: 2021 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1133969
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Fitness Cost and Competitive Ability to Different Ploidy Levels in Ryegrass Genotypes Planta Daninha
SCHMITZ,M.F.; CECHIN,J.; HENCKES,J.R.; PIASECKI,C.; AGOSTINETTO,D.; VARGAS,L..
ABSTRACT: The intergenotypic competition of tetraploid ryegrass with natural diploid population may be a tool to reduce the frequency of resistant individuals in an area. This study aimed to identify and compare the phenological development, fitness cost, and competitive ability between diploid and tetraploid ryegrass genotypes. Genotypes were grown in pots, and the morphological variables of genotype growth were assessed every 15 days up to 120 days after emergence to evaluate the fitness cost. Phenological development and seed yield components were measured in a single time together with the fitness cost. Competitive ability was determined in a replacement-series experiment with proportions of tetraploid and diploid ryegrass, in which the number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lolium multiflorum; Competition; Diploid; Tetraploid; Integrated weed management.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100189
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Genetically engineered crops: importance of diversified integrated pest management for agricultural sustainability. Repositório Alice
ANDERSON, J. A.; ELLSWORTH, P. C.; FARIA, J. C.; HEAD, G. P.; OWEN, M. D. K.; PILCHER, C. D.; SHELTON, A. M.; MEISSLE, M..
As the global population continues to expand, utilizing an integrated approach to pest management will be critically important for food security, agricultural sustainability, and environmental protection. Genetically engineered (GE) crops that provide protection against insects and diseases, or tolerance to herbicides are important tools that complement a diversified integrated pest management (IPM) plan. However, despite the advantages that GE crops may bring for simplifying the approach and improving efficiency of pest and weed control, there are also challenges for successful implementation and sustainable use. This paper considers how several GE traits, including those that confer protection against insects by expression of proteins from Bacillus...
Tipo: Artigo de periódico Palavras-chave: Engenharia Genética; Resistência Genética; Adoção de Inovações; Integrated pest management; Genetically engineered microorganisms; Resistance management; Integrated weed management; Innovation adoption; Sustainability science and engineering; Genetically modified plants.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1111550
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Glyphosate applied at the early reproductive stage impairs seed production of glyphosateresistant hairy fleabane. Repositório Alice
PIASECKI, C.; MAZON, A. S.; MONGE, A.; CAVALCANTE, J. A.; AGOSTINETTO, D.; VARGAS, L..
Tipo: Artigo de periódico Palavras-chave: Buva; Erva Daninha; Controle Integrado; Conyza bonariensis; Weeds; Integrated weed management; Glyphosate; Herbicides.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1113380
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Glyphosate Applied at the Early Reproductive Stage Impairs Seed Production of Glyphosate-Resistant Hairy Fleabane Planta Daninha
PIASECKI,C.; MAZON,A.S.; MONGE,A.; CAVALCANTE,J.A.; AGOSTINETTO,D.; VARGAS,L..
ABSTRACT: Glyphosate-resistant hairy fleabane [Conyza bonariensis (L.) Cronq.] is one of the most important weeds in the world. Among the factors that make this weed species widely distributed in the most diverse environments is the high seed production capacity and dispersal. Hairy fleabane plants not controlled by herbicide application regrowth and overcome crop canopy, use environmental resources, interfere with crops, and complete their life cycle by producing thousands of seeds and replenishing the seed bank. Management strategies that reduce production and viability of hairy fleabane seeds can be adopted within the integrated management to reduce the seed bank and prevent further infestations. In this way, experiments were carried out in a greenhouse...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conyza bonariensis; Resistance; Integrated weed management; Prevention; Soil seed bank.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100198
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Glyphosate resistance affect the physiological quality of Conyza bonariensis seeds. Repositório Alice
PIASECKI, C.; MAZON, A. S.; AGOSTINETTO, D.; VARGAS, L..
ABSTRACT - High seed production and dispersal capacity and glyphosate resistance are among the main factors that have made hairy fleabane (Conyza bonariensis) one of the most important and dispersed weeds in the world. Herbicide-resistant weeds populations may have fitness cost due to molecular, physiological, and biochemical changes. This study aimed to evaluate the physiological quality of seeds of Conyza spp. and determine whether glyphosate resistance causes fitness costs for resistant biotypes. Seeds from six hairy fleabane biotypes, three glyphosate-resistant and three -sensitive, with a resistance factor average of 11.7 were studied. Among the studied biotypes, five were identified as C. bonariensis and one as C. blakei. Seed analyses were performed...
Tipo: Artigo de periódico Palavras-chave: Herbicida; Erva Daninha; Herbicide resistance; Integrated weed management; Weed biology; Conyza bonariensis.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1115742
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Glyphosate Resistance Affect the Physiological Quality of Conyza bonariensis seeds Planta Daninha
PIASECKI,C.; MAZON,A.S.; AGOSTINETTO,D.; VARGAS,L..
ABSTRACT: High seed production and dispersal capacity and glyphosate resistance are among the main factors that have made hairy fleabane (Conyza bonariensis) one of the most important and dispersed weeds in the world. Herbicide-resistant weeds populations may have fitness cost due to molecular, physiological, and biochemical changes. This study aimed to evaluate the physiological quality of seeds of Conyza spp. and determine whether glyphosate resistance causes fitness costs for resistant biotypes. Seeds from six hairy fleabane biotypes, three glyphosate-resistant and three -sensitive, with a resistance factor average of 11.7 were studied. Among the studied biotypes, five were identified as C. bonariensis and one as C. blakei. Seed analyses were performed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbicide resistance; Integrated weed management; Weed biology; Soil seed bank; Conyza blakei.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100157
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Herbicide efficacy on Borreria densiflora control in pre- and post-emergence conditions Planta Daninha
Martins,B.A.B.; Christoffoleti,P.J..
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 dose-response 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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vassourinha-de-botão; Chemical control; Dose-response; Herbicide mixtures; Integrated weed management.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400017
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Influence of Tillage Systems and Selective Herbicides on Weed Management and Productivity of Direct-Seeded Rice (Oryza sativa) Planta Daninha
ABBAS,A.; KHALIQ,A.; SAQIB,M.; MAJEED,M.Z.; ULLAH,S.; HAROON,M..
ABSTRACT: Weeds cause considerable damage to rice crop. To ascertain the influence of different weed management practices under different tillage systems, a field experiment was conducted during 2014-15. Experimental design was RCB with split-plot arrangement and with a net plot size of 6 x 2 m. Three tillage systems viz; zero tillage with glyphosate application and conventional tillage with and without stale seed bed, and seven weed management treatments viz; weedy check, manual weeding, oxadiargyl as pre-emergence, pyrazosulfuron as pre-emergence, pyrazosulfuron as post-emergence, fenoxaprop-ethyle + sodium fluoride as post-emergence and fenoxaprop-ethyle + sodium fluoride as post-emergence. Results revealed that all treatments including tillage systems...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa L.; Direct-seeded rice; Tillage systems; Herbicides; Integrated weed management.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100280
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Integrated Role of Row Spacing and Adjuvant to Reduce Herbicide Dose in Maize Under Semi-Arid Conditions Planta Daninha
NADEEM,M.A.; ABBAS,T.; BASHIR,F.; MAQBOOL,R..
ABSTRACT: Crop row spacing adjustment and adjuvants have a significant role in decreasing herbicide cost and environmental damage by reducing herbicide application rate. A field study was conducted to assess the impact of two row spacing values and reduced herbicide rates along with adjuvant on weeds in maize in 2014 and 2015. The experiment consisted of atrazine plus mesotrione plus halosulfuran methyl (pre-mixed herbicide) at label rate (719.2 g a.i. ha-1); reduced rates of 75% (539.4 g a.i. ha-1) and 50% (359.6 g a.i. ha-1) alone and in combination with alkyl ether sulphate at 396.8 mL ha-1 as an adjuvant along with weedy check in maize sown at 60 and 75 cm row spacing. Alkyl ether sulphate increased weed control efficacy (13-35%) of the pre-mixed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alkyl ether sulphate; Economic analysis; Integrated weed management; Narrow row maize; Reduced herbicide dose; Weed control efficiency.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100237
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Levantamento florístico de plantas daninhas em lavoura de milho cultivada no cerrado de Goiás. Infoteca-e
FONTES, J. R. A.; SHIRATSUCHI, L. S..
RESUMO: Neste trabalho, objetivou-se realizar um levantamento florístico e plantas daninhas em uma lavoura de milho cultivada na primavera-verão em sistema de plantio direto no Cerrado do Estado de Goiás, sendo empregado para isso o método de quadrado inventário. A área amostrada correspondeu a 107,5 ha e foi dividida em grade regular de 50 x 50 m, totalizando 430 pontos. Num raio de 5 m, ao redor de cada ponto, foi lançado aleatoriamente um quadrado de ferro de 50 cm de lado (0,25 metros quadrados), num total de quatro vezes. (1,0 metros quadrados). Os seguintes parâmetros foram calculados: frequência, frequência relativa, densidade, densidade relativa, abundância, abundância relativa e índice de valor de importância. Foram identificadas 23 espécies de...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: Planta daninha; Manejo integrado; Identification; Maize; Zero tillage.; Erva Daninha; Identificação; Milho; Plantio Direto; Zea Mays.; Integrated weed management; Weeds..
Ano: 2005 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/544627
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Managing glyphosate-resistant weeds with cover crop associated with herbicide rotation and mixture Ciência e Agrotecnologia
Marochi,Aroldo; Ferreira,Antonio; Takano,Hudson Kagueyama; Oliveira Junior,Rubem Silvério; Ovejero,Ramiro Fernando Lopez.
ABSTRACT Herbicide resistance has become a major concern for agricultural systems, and integrating weed management practices seem to be the most promise way for its mitigation. The effects of cropping systems including ruzigrass (Urochloa ruziziensis) associated with herbicide rotation programs were evaluated for the management of glyphosate resistant conyza (Conyza sumatrensis) and sourgrass (Digitaria insularis) in soybean and corn production systems. A 3x3 factorial was evaluated in four consecutive soybean (spring-summer) and corn (fall-winter) double cropping seasons. Factor A consisted of three combinations of cropping systems in the fall-winter: corn, corn plus ruzigrass, and ruzigrass alone. Factor B was based on increasing levels of diversity in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digitaria insularis; Conyza sumatrensis; Integrated weed management; Urochloa ruziziensis; Herbicide resistance..
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000400381
Registros recuperados: 32
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