Volume 60, Number 1 Search All Journals Search for: Back to Issue Diversity of Alternaria alternata, causal agent of Alternaria leaf spot of sugar beet. View Article PDF Back to Issue Post navigation Drought stress prior to harvest affects postharvest respiration rate and susceptibility to storage rots.Development of a reliable greenhouse screen for Rhizoctonia Crown and Root Rot to identify resistant germplasm and develop a non-destructive rating method.