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Effects Of Environmental Variables And Crop Growth On Development Of Brown Rust Epidemics In Sugarcane, Wilmer Anibal Barrera
Effects Of Environmental Variables And Crop Growth On Development Of Brown Rust Epidemics In Sugarcane, Wilmer Anibal Barrera
LSU Master's Theses
Natural epidemics of brown rust, caused by Puccinia melanocephala, affecting sugarcane were studied to determine the crop and/or environmental factors that affect epidemic onset, severity and eventual decline. Environmental and crop growth variables were monitored along with disease severity in two susceptible cultivars, LCP 85-384 and Ho 95-988, each grown at a different location in Louisiana. During two seasons, correlation and multiple regression analyses identified leaf wetness and temperature as important determinants of disease severity for both cultivars. The results suggested that crop growth variables were not determinants for epidemics. Controlled conditions experiments assessing the interaction of leaf wetness and …