02069naa a2200229 a 450000100080000000500110000800800410001910000200006024501090008026000090018952013790019865300230157765300210160065300200162165300230164170000150166470000190167970000180169870000230171670000170173977300830175611312922021-10-07       2021    bl uuuu     u00u1 u    #d1 aMONTEIRO, F. P.  aDevelopment and validation of diagrammatic scales to assess septoriose in tomato.h[electronic resource]  c2021  aSeptoriose or septoria leaf spot (Septoria lycopersici Speg.) is an important disease in  tomatoes (Solanum lycopersicum L.) because of the damage that it can cause. To improve the  evaluation of studies aiming to determine the most efficient treatment is necessary accuracy and  precision during the assessment. Therefore, this study aimed to develop two diagrammatic scales  based on grades and severity to evaluate septoriose severity on tomato leaves. The diagrammatic  scale based on grades was developed and validated with eight grades, with severities ranging from  0.67 to 100%. The diagrammatic scale based on severity values varied from 1.79 to 100%. More  than 80% of the leaves collected from the field showed severity ranging from 0.1 to 20%, but there  was a representative leaf for every interval chosen. Five inexperienced evaluators performed the  validation of the scales, and the data were analysed with Lin?s statistics. Without the scales, most  evaluators overestimated disease severity, whereas the use of the scales resulted in increased  precision, accuracy, and reliability of the estimates. In conclusion, the proposed diagrammatic  scales proved to be useful for assessments of septoriose severity in tomato leaves. The scales may  be of interest to researchers performing studies on epidemiology, fungicides efficacy or breeding  for resistance.  aDisease assessment  aDisease severity  aPhytopathometry  aSeptoria leaf spot1 aOGOSHI, C.1 aCARDOSO, D. A.1 aPERAZOLLI, V.1 aPINTO, F. A. M. F.1 aMALLMANN, G.  tPlant Pathology and Quarentine, Guiyang, Chinagv. 11, n. 1, p. 115-124, 2021.