Alachlor
Mostrando 25-36 de 39 artigos, teses e dissertações.
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25. Cultivos intercalares e controle de plantas daninhas em plantios de maracujá-amarelo
Objetivou-se identificar cultivos intercalares e métodos integrados de controle de plantas daninhas em maracujá-amarelo (Passiflora edulis Sims f. flavicarpa Deg.) como fatores que viabilizem a sua produção e rentabilidade. O experimento foi instalado em maio de 1999, conduzido em espaldeira vertical com um fio de arame a 2,0m do solo, no espaçamento de
Revista Brasileira de Fruticultura. Publicado em: 2002-12
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26. Tolerância de leguminosas de cobertura do solo a Herbicidas
São poucas as pesquisas de tolerância de leguminosas de cobertura do solo a herbicidas visando selecionar produtos que sejam seletivos a estas plantas e que apresentem controle satisfatório das plantas daninhas. Com o objetivo avaliar a tolerância de quatro leguminosas a herbicidas, instalou-se um experimento em condições de casa-de-vegetação. As leg
Acta Amaz.. Publicado em: 2002-06
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27. ATIVIDADE RESIDUAL DE IMAZAQUIN E ALACHLOR+ATRAZINE PARA PLANTIO SEQÜENCIAL DE CANOLA
No presente trabalho, avaliou-se o efeito residual dos herbicidas imazaquin (150 e 300g de equivalente ácido ha-1) e alachlor+atrazine (1430+1430 e 2860+2860g ha-1), aplicados respectivamente em soja e milho, visando a determinar o intervalo de tempo mínimo entre a utilização desses herbicidas e a semeadura de canola em rotação após essas culturas. Am
Ciência Rural. Publicado em: 2001-04
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28. Isolamento e sistematica de actinomicetos degradadores de herbicidas
Diversas linhagens de actinomicetos foram isoladas seletivamente a partir de amostras de solos previamente tratados com os herbicidas alachlor, gramocil e scepter 70DG. Ensaios de seleção e triagem de linhagens resistentes a concentrações elevadas dos herbicidas foram realizados com as culturas puras utilizando meio sólido suplementado com concentraçõ
Publicado em: 2001
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29. Influencia da embalagem e do armazenamento na qualidade fisiologica sanitaria de sementes de algodão (Gossypium hirstum L.) e de arroz (Oryza Sativa L.) e efeito de herbicidas sobre os fungos associados
Nas culturas de algodão e de arroz as doenças atingem níveis elevados, causando a redução ou a perda total da produção. As sementes, desde o início de sua formação até a germinação, podem ser invadidas por microrganismos patogênicos que podem transmiti-Ios às gerações subsequentes. Quando elas são secas para posterior armazenamento, os fung
Publicado em: 1998
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30. Characterization of Glutathione S-Transferase Isoforms in Three Maize Inbred Lines Exhibiting Differential Sensitivity to Alachlor.
Glutathione S-transferases (GSTs) are a family of isozymes that catalyze the conjugation of glutathione to several xenobiotics, including a number of important herbicides. Several GST isoforms have been identified in maize (Zea mays L.). In this study we focused on three isoforms, GST I, II, and IV, derived from homo-or heterodimerization of two subunits GST
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31. Different Rates of Metabolism of Two Chloroacetanilide Herbicides in Pioneer 3320 Corn
The in vivo rates of uptake and detoxification of alachlor and metolachlor were determined using Pioneer corn 3320 seedlings. Equal amounts of the radiolabeled herbicides were applied to etiolated coleoptiles and, at various intervals after treatment, the unabsorbed radioactivity was removed and quantified. Analysis of 80% methanol extracts by reverse phase
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32. Cometabolism of low concentrations of propachlor, alachlor, and cycloate in sewage and lake water.
Low concentrations of propachlor (2-chloro-N-isopropylacetanilide) and alachlor [2-chloro-2',6'-diethyl-N-(methoxymethyl)acetanilide] were not mineralized, cycloate (S-ethyl-N-ethylthiocyclohexanecarbamate) was slowly or not mineralized, and aniline and cyclohexylamine were readily mineralized in sewage and lake water. Propachlor, alachlor, and cycloate were
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33. Cloning and expression of a cDNA encoding a maize glutathione-S-transferase in E. coli.
The isolation and characterization of a family of maize glutathione-S-transferases (GST's) has been described previously. These enzymes are designated GSTs I, II and III based on size, substrate specificity and responsiveness to safeners. GST III has been shown to act on the herbicide alachlor as well as the commonly used substrate 1-chloro-2,4-dinitrobenzen
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34. Treating Soil Solution Samplers To Prevent Microbial Removal of Analytes
Soil microorganisms colonizing soil water sampling devices (lysimeters) reduced concentrations of biodegradable organic chemicals, including 2,4-dichlorophenoxyacetic acid methyl ester, alachlor, methyl m-chlorobenzoate, and metolachlor as water entered through porous ceramic cups. In some cases, losses exceeded 99%. Additions of either a biocide (sodium hyp
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35. Mineralization of the s-triazine ring of atrazine by stable bacterial mixed cultures.
Enrichment cultures containing atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine) at a concentration of 100 ppm (0.46 mM) as a sole nitrogen source were obtained from soils exposed to repeated spills of atrazine, alachlor, and metolachlor. Bacterial growth occurred concomitantly with formation of metabolites from atrazine and subsequent biosynt
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36. Propachlor degradation by a soil bacterial community.
Soil from a pesticide disposal site was used to enrich for microorganisms that degraded the acylanilide herbicide propachlor (2-chloro-N-isopropylacetanilide). After seven transfers of the enrichment, the culture contained about six strains. The highest yield of microbial biomass occurred if just two of these isolates, strains DAK3 and MAB2, were inoculated