Alternative control to powdery mildew (Erysiphe poligoni D. C. Sin) on mango in Submedio São Francisco River in Brazilian semi-arid region.
Tavares S. C. C. de H., Cruz S. C. da, Siqueira J. G. de, Lima M. L. C., Silva P. C. G. C., Neves R. A. F. de, Menezes C. A.
Author Email: selmaht@cpatsa.embrapa.br
: 471-474
Abstract : A study was conducted in a commercial orchard in Nilo, Petrolina, Pernambuco, Brazil, to evaluate the efficiency of chemical and biological agents in the control of Erysiphe polygoni, causal agent of powdery mildew in mango (cv. Tommy Atkins) trees in the second semester of 2001. Treatments comprised: DE 975 (quinoxyfen) + fenarimol at 30, 40, 50, 60 and 70 ml per 150 litres of water; 100 ml Folicur 200 CE (tebuconazole)/150 litres of water; 750 ml Biomix (Trichoderma spp.)/150 litres of water; and an untreated control. The results showed that the treatment DE 975 + fenarimol at 50 ml/150 litres of water, was the most efficient for the control of powdery mildew reaching 0% of infection during the entire cycle of the culture.