Consulta: creatorFacets:"Matallo,Marcus Barifouse"
Registros recuperados: 2
Data/hora: 09/06/2024 13:31:17

Influence of repeated applications of glyphosate on its persistence and soil bioactivity
Provedor de dados: 86
Autores: Andréa,Mara Mercedes de; Peres,Terezinha Bonanho; Luchini,Luiz Carlos; Bazarin,Sheila; Papini,Solange; Matallo,Marcus Barifouse; Savoy,Vera Lucia Tedeschi.
Pesticide degradation studies are essential to evaluate its impact in the environment and on non-target organisms. The effect of repeated soil applications of the herbicide glyphosate on its dissipation and on soil microorganisms was studied by radiometric and microbial techniques. Results indicated fast dissipation of the [14C]-glyphosate or [14C]metabolites extractable residues (half-life of 0.92±0.29 month), but increasing half-lives of total mineralization ranging from 2.2 to 3.4 months as the number of applications increased from 1 to 4. No significant correlation was found between 14CO2 production and dehydrogenase activity.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pesticide residues; Mineralization; Dehydrogenases; Soil treatment.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003001100012

Estimation of herbicide bioconcentration in sugarcane (Saccharum officinarum L.)
Provedor de dados: 65
Autores: Cerdeira,Antonio Luiz; Paraíba,Lourival Costa; Queiroz,Sonia Claudia Nascimento de; Matallo,Marcus Barifouse; Franco,Daniel Andrade de siqueira; Ferracini,Vera Lúcia.
Sugarcane is an important crop for sugar and biofuel production in Brazil. Growers depend greatly on herbicides to produce it. This experiment used herbicide physical-chemical and sugarcane plant physiological properties to simulate herbicide uptake and estimate the bioconcentration factor (BCF). The (BCF) was calculated for the steady state chemical equilibrium between the plant herbicide concentration and soil solution. Plant-water partition coefficient (sugarcane bagasse-water partition coefficient), herbicide dilution rate, metabolism and dissipation in the soil-plant system, as well as total plant biomass factors were used. In addition, we added Tebuthiuron at rate of 5.0kg a.i. ha-1 to physically test the model. In conclusion, the model showed the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicide; Bioconcentration factor; Plant uptake; Model; Bagasse adsorption.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000400591