Response of soil microbial communities to the herbicide mesotrione: A dose-effect microcosm approach

Crouzet, Olivier; Batisson, Isabelle; Besse-Hoggan, Pascale; Bonnemoy, Frédérique; Bardot, Corinne; Poly, Franck; Bohatier, Jacques; Mallet, Clarisse

doi:10.1016/j.soilbio.2009.10.016

Cited by 132 publications

(107 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…O mesotrione foi desenvolvido de uma fitotoxina natural para minimizar os impactos ambientais (Crouzet et al, 2010). As características dele (Quadro 1) não auxiliam na resposta dessa pergunta, pois apresenta menor solubilidade em água que o nicosulfuron e menor adsorção ao solo e mobilidade que o fluazifop-P-buthyl.…”

Section: Ensaios Ecotoxicológicos E Triagem Da Fauna Edáficaunclassified

“…Com isso, altera-se o funcionamento do solo (Cortet et al, 1999), como os processos de decomposição vegetal (Hendrix e Parmelee, 1985), a manutenção da estrutura do solo, a transformação e a mineralização da matéria orgânica e o controle de organismos considerados pragas (Gill e Garg, 2014). Há autores que concluem que há efeitos negativos do uso de herbicidas sobre a estruturação da comunidade de invertebrados do solo, como colêmbolos (Haque et al, 2011), nematoides (Zhao et al, 2013), minhocas (García-Pérez et al, 2014) e diversos grupos de microrganismos (Crouzet et al, 2010;Camelo et al, 2011;Karpouzas et al, 2014;Darine et al, 2015).…”

Section: Introductionunclassified

See 1 more Smart Citation

Efeito de Herbicidas sobre a Biota de Invertebrados do Solo em Área de Restauração Florestal

Scoriza

Silva

Correia

et al. 2015

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

rEsumoO controle químico de plantas daninhas é um método eficaz utilizado em florestas plantadas e em áreas de restauração florestal, favorecendo o desenvolvimento das mudas florestais e a redução dos custos de intervenção. Entretanto, se essa estratégia não for aplicada de maneira correta, pode-se tornar um potencial causador de impactos negativos aos organismos do solo e aos processos ecológicos que esses participam. avaliou-se o efeito do uso de herbicidas na biota do solo por meio da amostragem da comunidade da fauna edáfica e testes ecotoxicológicos de reprodução e sobrevivência de Folsomia candida e Enchytraeus crypticus, em área-alvo de restauração florestal recém-implantada. O delineamento experimental adotado foi de blocos casualizados com quatro tratamentos e cinco repetições. os tratamentos consistiram da aplicação dos herbicidas pós-emergentes mesotrione (0,4 l ha -1 ), fluazifop-P-butyl (1,0 L ha -1 ) e nicosulfuron (1,5 l ha -1 ), aplicados em área total nas parcelas, mais o controle (sem aplicação). na área de estudo, foram realizadas duas aplicações dos herbicidas com intervalos de seis meses, onde as parcelas foram correspondentes aos tratamentos em ambas as aplicações. Em cada parcela, foram realizadas quatro coletas de solo, sendo a primeira (coleta 1) seis dias antes da segunda aplicação dos herbicidas na área. as demais, após um (coleta 2), oito (coleta 3) e 22 dias (coleta 4) dessa mesma aplicação. a comunidade da fauna do solo foi avaliada por meio do método de funis de Berlese modificado, utilizando-se uma amostra de solo por parcela. Em laboratório, os indivíduos foram contados e identificados em grandes grupos. Os ensaios ecotoxicológicos de sobrevivência e reprodução de F. candida e E. crypticus foram realizados a Recebido para publicação em 15 de maio de 2015 e aprovado em 28 de julho de 2015.

show abstract

Section: Ensaios Ecotoxicológicos E Triagem Da Fauna Edáficaunclassified

Section: Introductionunclassified

Efeito de Herbicidas sobre a Biota de Invertebrados do Solo em Área de Restauração Florestal

Scoriza

Silva

Correia

et al. 2015

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…The biodegradation process of triketones has been discussed in depth. However, in natural conditions, the degradation of organic pollutants is due to a combination of several processes, among them photochemical reactions involving sunlight play the most significant role (Chaabane et al 2008;Batisson et al 2009;Crouzet et al 2010;Mountacer et al 2014;Murati et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Degradation study of mesotrione and other triketone herbicides on soils and sediments

et al. 2015

View full text Add to dashboard Cite

Purpose Triketone compounds are considered to be less stable in the ecosystems in comparison with other herbicides. However, their degradation processes in environment are under investigation as both parents and degradation products can exhibit toxicity on non-target organisms. The objective of this research was to investigate the degradation of triketone herbicides: mesotrione, sulcotrione, and tembotrione, as well as their degradation products in soils and sediments. Materials and methods The degradation studies were conducted in soil and sediment samples with different physicochemical properties. All experiments were conducted under standard experimental conditions; therefore, it was possible to assess the influence of pH, organic carbon (OC) content of soils and sediments, and the sunlight on the stability of triketones and their degradation products. The conditions of extraction and chromatographic determination were optimized for the determination of triketones and their degradation products in laboratory-spiked sediment and soil samples. Results and discussion The triketone degradation products exhibited higher stability in soil and sediment samples in comparison with parent herbicides. Soil microorganisms accelerated the degradation of all investigated compounds. In alkaline soil and sediments, all analytes exhibited higher stability in comparison with the acidic sorbents. The influence of OC content in sorbents was not evident. Photodegradation was the main path of triketones decomposition in soils and sediments. Conclusions Since the stability of triketone herbicides may be significant, depending on the environmental conditions, the monitoring of the concentration of these compounds and in particular their degradation products should be conducted under the field conditions.

show abstract

“…Araújo et al (2003) noted a significant increase in the count of actinomycetes following the application of glyphosate. Crouzet et al (2010) studying mesotrione at increased doses (tenfold, 100-fold higher than the recommended) found an increase in the count of fungi. Milošević et al (2004) and Elbashier et al (2016) also noted the sensitivity of bacteria of the genus Azotobacter to pesticides.…”

Section: Resultsmentioning

confidence: 99%

Response of microorganisms and enzymes to soil contamination with a mixture of pethoxamid terbuthylazine

et al. 2016

View full text Add to dashboard Cite

This study analysed the effect of a mixture of pethoxamid (P) and terbuthylazine (T) contained in the herbicide Successor T 550 SE on organotrophic bacteria, total oligotrophic bacteria, Azotobacter and actinomycetes, oligotrophic sporulating bacteria, fungi and on the activities of dehydrogenases, catalase, urease, alkaline phosphatase, acid phosphatase, arylsulphatase and bglucosidase. The phytotoxic effect of this pesticide on maize was also determined. The study was undertaken because of a lack of data concerning the effect of a P?T mixture on soil metabolism. The previously undertaken studies concerned only the separate effect of each of these substances. The P?T mixture disturbed soil homeostasis and altered soil stability, resulting in a succession of K-strategy organotrophic bacteria. It had a negative effect on bacteria of the genus Azotobacter, oligotrophic sporulating bacteria, actinomycetes and fungi, and a positive effect on oligotrophic bacteria. P?T in doses greater than 0.73 mg kg -1 of soil resulted in a strong inhibition of dehydrogenases, catalase, urease, acid phosphatase, alkaline phosphatase, arylsulphatase and b-glucosidase, and significantly inhibited the growth and development of maize.

show abstract

Response of soil microbial communities to the herbicide mesotrione: A dose-effect microcosm approach

Cited by 132 publications

References 56 publications

Efeito de Herbicidas sobre a Biota de Invertebrados do Solo em Área de Restauração Florestal

Efeito de Herbicidas sobre a Biota de Invertebrados do Solo em Área de Restauração Florestal

Degradation study of mesotrione and other triketone herbicides on soils and sediments

Response of microorganisms and enzymes to soil contamination with a mixture of pethoxamid terbuthylazine

Contact Info

Product

Resources

About