RESUMO
A novel formulation of tebuconazole in microemulsion state was prepared in this work. The microemulsion was formed due to the presence of a special system of surfactants, namely ethoxylated castor oil and fatty acid amides. Biological effect of suspension concentrate and microemulsion formulations of tebuconazole with the same concentration of active ingredient was investigated in the field experiments. The experiments demonstrated excellent efficiency of the microemulsion containing 60 g/l of tebuconazole against broad spectrum of crop diseases and infections including smut diseases, root rots and moulds in comparison to suspension concentrate at the same application rate.
Assuntos
Produtos Agrícolas , Fungicidas Industriais/farmacologia , Triazóis/farmacologia , Bioensaio , Produtos Agrícolas/efeitos dos fármacos , Produtos Agrícolas/crescimento & desenvolvimento , Relação Dose-Resposta a Droga , Grão Comestível/efeitos dos fármacos , Grão Comestível/crescimento & desenvolvimento , Emulsões/farmacologia , Fungicidas Industriais/efeitos adversos , Germinação , Tamanho da Partícula , Sementes/efeitos dos fármacos , Sementes/crescimento & desenvolvimento , Solubilidade , Tensoativos/farmacologia , Fatores de Tempo , Resultado do Tratamento , Triazóis/efeitos adversosRESUMO
The biological efficiency of systemic herbicide metribuzin in water dispersible granules (WG) and solution colloid concentrate (SCC) formulations was studied in field experiments. Metribuzin formulation in SCC state was prepared by the addition of a mixture of anionic and non-ionic surfactants and alkoxylated sorbitan esters as specific adjuvants. The ability of herbicide formulation containing Metribuzin in SCC state to provide increases in control of broadleaf and grassy weeds in comparison to WG was observed. The possibility to reduce application rate of Metribuzin from high-dose to low-dose without losing efficacy of weed control was demonstrated.
