The control of black spot of papaya is necessary, therefore, the objective of this study was to evaluate the effect of foliar applications of phosphites (K, Ca, Mg and Cu) on papaya black spot. Two phosphites and the fungicide Fosetyl-Al were tested on a field trial with papaya plants naturally infected by the pathogen. Ten phosphites and the fungicide Fosetyl-Al were tested in a greenhouse trial, also with plants naturally infected by A. caricae. In both, field and greenhouse trials, the phosphite treatments reduced black spot severity.
phosphite; black spot; Asperisporium caricae; control; papaya
