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Limited occurrence of resistant radish (Raphanus sativus) to AHAS-inhibiting herbicides in Argentina Planta Daninha
Pandolfo,C.E.; Presotto,A.; Poverene,M.; Cantamutto,M..
Radish has developed feral and weedy biotypes, which is a concern for agriculture around the world. In Argentina, it is one of the most widespread and troublesome crop weeds. In Brazil, this species has developed herbicide-resistance to acetohydroxyacid synthase (AHAS) inhibiting herbicides. The objective of this study was to record the presence of herbicide-resistant weedy radish plants in Argentina. In spring 2008, we found a small population of radish at the end of the flowering stage in an imidazolinone-tolerant canola field treated with imazethapyr. Screening and dose-response tests were conducted to two successive generations. They proved the biotype resistant status, and showed extensive survival (between 50 and 80% of control) to the application of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbicide-resistance; Imazethapyr; Metsulfuron; Dose-response.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300017
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Using penoxsulam ALS inhibitor as a broad-spectrum herbicide in Chilean rice Ciencia e Investigación Agraria
Kogan,Marcelo; Gómez,Patricio; Fischer,Albert; Alister,Claudio.
The continuously-flooded rice production system in Chile has selected highly competitive aquatic weeds selection capable ofreducing paddy yields by 25 to 50%. Penoxsulam is a broad-spectrum triazolopyrimidine (ALS inhibitor) commercially introduced in Chile in 2006, where Alisma plantago aquatica hads already evolved resistance to sulfonylurea herbicides (SU). Several field trials with water seeded rice were conducted during 2003 and 2004 in Chile to determine efficacy, timing of application, spectrum of control, and control of SU-resistant A. plantago aquatica with the herbicide penoxsulam, either in single applications or in sequence with other herbicides. Penoxsulam was applied a) 12 days after seeding (DAS) into the water (IW), b) in postemergence...
Tipo: Journal article Palavras-chave: Penoxsulam; Bensulfuron; Metsulfuron; MCPA; Bentazon; Triclopyr; Cyperus difformis; Schoenoplectus mucronatus; Alisma plantago-aquatica; Echinochloa crus-galli; Herbicide-resistance.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100008
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