Evaluation of four products for control of bacterial stem canker and fruit rot (Erwinia spp.) in mango (Mangifera indica L.) fruit.
Guevara Y., Maselli A., Mireles M., Figueroa R., Marcano M., Rondón A.
Author Affiliation: Instituto Nacional de Investigaciones Agrícolas (INIA-CENIAP), Apdo. 4653, Maracay, Venezuela.
Revista Mexicana de Fitopatología 20 : 110-113
Abstract : Bacterial stem canker and fruit rot, caused by E. mangifera and E. carotovora, is one of the most important diseases of mango in Venezuela, which affects mainly the commercial cultivars Haden, Tommy Atkins and Manzano. A trial was undertaken to evaluate the effect of four agrochemicals for the control of the disease in mango cv. Haden. The experimental plot was localized in a representative commercial mango plantation in the Valencia lake basin, presenting high grade of disease severity. Six foliar sprays at two weeks intervals were applied to five trees selected for each treatment (including controls), starting at the blooming period [date not given]. The products tested were: Agrimycin 17 [streptomycin], Cuprimicin 500, Phyton 27 [copper sulfate] and Covinex Forte. The fruit damage was evaluated using a severity scale with 3 levels. Data were processed using Duncan's Multiple Range Test, resulting five groups that were significantly different. Best results were obtained with Cuprimicin 500 presenting the lowest number of fruits affected with severity grade 3.