Orange Rust Disease Progress in Different Plantation Cycles of Sugarcane in Cuba

The objective of this study was to determine the time of planting and the most favorable months of the year for the development of sugarcane orange rust (caused by Puccinia kuehnii ) in Cuba. During the 2016–2018 period, susceptible cultivar C01-227 was established in experimental plots in different months and years of planting. The orange rust was more severe in the plantations that were carried out from April to September, mainly in August and September, and lower in January, February and March. Infection and severity of the disease were favored with an average air temperature range between 20 and 24 °C, minimum of 14–18 °C and maximum below 30 °C, accompanied by relative humidity greater than 80%.