Pesticides and herbicides

Libra, Judy A.; Ro, Kyoung S.; Chung, Kyu Hyuck; Chung, Yun Chur

doi:10.2175/106143096x135470

Cited by 3 publications

(2 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Microorganisms such as Rhizopus, Actinomyces and Streptomyces isolated from a soil treated with metolachlor for five years mineralised 18.4% of the initial 14 C metolachlor applied (Liu et al, 1988). In addition, Bacillus circulans, B. megaterium, Fusarium sp., Mucor racemosus, Phanerochaete chrysosporium, Rhizoctonia praticola, Syncephalastrum racemosum and actinomycete have also been found to degrade metolachlor (Saxena et al, 1987;Liu et al, 1991, Liu et al, 1995Libra et al, 1996;Sanyal & Kulshrestha, 2002). A mixed culture of Bacillus luciferensis, Stenotrophomonas acidaminiphila and Pseudomonas sp.…”

Section: Microbial Degradationmentioning

confidence: 99%

Environmental fate of S-Metolachlor: a review

et al. 2014

View full text Add to dashboard Cite

-S-metolachlor is a preemergent herbicide used for the control of annual grasses and small-seeded broadleaf weeds in more than 70 agricultural crops worldwide. Recently, S-metolachlor has been used to control imidazolinone-resistant red rice in rice-soybean rotation in lowland environments of the Southern Brazil. However, limited information concerning the environmental fate of S-metolachlor in lowland soil is available in the literature. Thus, this review was designed to describe the major transport and dissipation processes of S-metolachlor in attempting to improve weed management programs used in rice-soybean rotation and mitigate environmental contamination of lowland areas.Keywords: chloroacetamide, degradation, dissipation, transport, retention. RESUMO -S-metolachlor é um herbicida pré-emergente utilizado mundialmente para controle de plantas daninhas em mais de 70 culturas agrícolas. Nos últimos anos, esse herbicida vem sendo usado para controlar arroz-vermelho resistente às imidazolinonas em áreas de rotação soja-arroz irrigado, em terras baixas no Sul do Brasil. No entanto, existem poucas informações consistentes sobre a dinâmica ambiental de S-metolachlor em terras baixas. Nesse contexto, esta revisão teve por objetivo descrever os principais processos de transporte e dissipação de S-metolachlor, visando otimizar o manejo de plantas daninhas na rotação soja-arroz irrigado e mitigar a contaminação ambiental de terras baixas.

show abstract

Section: Microbial Degradationmentioning

confidence: 99%

Environmental fate of S-Metolachlor: a review

et al. 2014

View full text Add to dashboard Cite

show abstract

“…Various dechlorinated products were also identified from mixed bacterial community (12), Streptomyces sp., Phanerochaete chrysosporium, Rhizoctonia praticola, and Syncephalastrum racemosum (13). Liu et al (14) and Libra et al (15) reported the degradation of metolachlor by the white-rot fungus P. chrysosporium. The predominant metabolites formed were the same as those reported by other workers (8,13).…”

Section: Introductionmentioning

confidence: 99%

Metabolism of Metolachlor by Fungal Cultures

Sanyal

Kulshrestha

2002

J. Agric. Food Chem.

View full text Add to dashboard Cite

Metabolism of metolachlor was studied using a mixed fungal culture isolated from a metolachlor-acclimated field soil. The culture rapidly degraded metolachlor with a half-life of 3.5 days in broth. Aspergillus flavus and A. terricola purified from the mixed culture also metabolized metolachlor effectively. Five metabolites obtained were identified by co-chromatography on HPLC by comparing with authentic standards and by GC-MS. Hydrolytic dechlorination, N-dealkylation, and amide bond cleavage appeared to be the dominant transformations involved in the metabolism. Metabolites, 6-methyl 2-ethyl acetanilide and 6-methyl 2-ethyl aniline, identified in this study are new metabolites of metolachlor being reported from any mixed or pure microbial cultures. The mixed culture could degrade 99% of metolachlor at a fortification level as high as 100 microg mL(-)(1).

show abstract