Elabora？？o e valida？？o de escala diagramática para quantifica？？o da mancha de ramularia do algodoeiro

this study aimed to elaborate and validate a diagrammatic scale to assess areolate mildew on cotton leaves. the proposed scale showed disease levels of 0.05, 0.50, 1.0, 2.0, 4.0, 8.0, 16.0, 32.0 and 67.20%. the scale showed to be adequate to evaluate areolate mildew due to an increase in accuracy, precision, and reproductibility during disease evaluations.