Navegando por Autor "Bacha, A. L."

Agora exibindo 1 - 1 de 1

Sugarcane’s chemical ripeners can stimulate growth of young coffee plants in a drift scenario
(Instituto Internacional de Ecologia, 2026-03-30) Corrêa, F. A. M.; Silva, F. R. C. da; Piazentine, A. E.; Bacha, A. L.; Alves, P. L. C. A.
Due to the proximity between sugarcane and coffee areas in Brazil, studies are needed to evaluate the effect of different chemical ripeners in a possible drift scenario. Two open-area experiments were carried out to evaluate the effects of sugarcane’s sector commonly used ripeners on young coffee plants. In the first experiment, four ripeners were tested: glyphosate, sulfometuron-methyl, trinexapac-ethyl and ethephon, plus a control without application. The second experiment was conducted with increasing doses of the one that caused the greatest damage to the crop (glyphosate). Coffee growth and physiological parameters were assessed. For the first experiment, glyphosate (180 g a.e. ha-1) provided the greatest negative effects on coffee growth. The application of 250 g a.i. ha-1 of trinexapac-ethyl caused a positive effect on plant growth. Complete hormesis was observed on coffee plants, in which glyphosate doses up to 60 g a.e. ha-1 stimulated growth and higher doses caused deleterious effects. Our results shade light into the effect of sugarcane chemical ripeners in coffee plants, especially for supporting the choice of safe ripeners to be used in areas close to newly established coffee orchards.