A randomized complete block design (DBCA) with six treatments and four replications was used, and the data obtained were submitted to variance analysis. Subsequently, a comparison of media by Tukey (p≤0.05) was carried out for each season, and for the comparison between the seasons test T (p≤0.05) was used. The intensity of leaf diseases present in the aerial part of crop was evaluated weekly in a period of five weeks. Severity values (except cercospora blight and soybean rust) were integrated in the area under the relative disease progress curve (AACPDr). Cultivars A 4910 RG and BMX Apolo RR had lower severity of downy mildew and blight cercospora, as well as of the number of lesions cm -2 of Asian rust. Cultivars CD 219 RR and FUNDACEP 55 RR showed less bacterial blight, downy mildew and powdery mildew severity. Genotype A 4910 RG behaved as very early, BMX Apolo RR, A 6001 RR and CD 214 RR as precocious, FUNDACEP RR 55 as medium and CD 219 RR as late.