Continued use of Orbit in this manner could potentially lead to the development of resistant strains of brown rot to this fungicide and other fungicides in its class, such as Indar, Elite, and Funginex, effectively removing them from the growers' dwindling arsenal of fungicides available to control this economically important disease. The experiments were conducted at the Chilton County Horticultural Station near Clanton. Treatments were replicated four times with four trees per replication in a randomized complete block design. The spray program consisted of seven applications of sulfur or Captan through the cover period. Preharvest applications were applied at seven days and one day before harvest.
Rhizopus rot on post-harvest peaches.
Percent of fruit with peach scab and percent marketable fruit were determined at harvest. Incidence of brown rot and Rhizopus rot was determined seven days after harvest following storage of fruit at 77 o F degrees. Peach scab was observed on the majority of fruit in all treatments, with the most severe damage in the unsprayed control. In 1997, sulfur was applied for bloom sprays for all programs in which sulfur was used during the cover period, and Captan was used for all programs in which Captan was used during the cover period. The replacement of one Orbit spray with a fungicide of another fungicide class such as Rovral or Captan would constitute an effective disease resistant management program for brown rot.