Parthenium Biological Control Agents

          Puccinia abrupta var.partheniicola (parthenium rust)


          Light infection in autumn
          Low levels of rust survive until weather conditions improve
          • from Mexico
          • dependant on temperature and moisture (rain/dew)
          • 1 generation/14 days at optimum conditions
          • spores are powdery and wipe off easily
          		Cool night temp (15 - 16 oC) + 6 hours leaf moisture

          Causes yellowing and twisting of leaves          		Cool night temp (15 - 16 oC) + 6 hours leaf moisture

          Heavy infection in autumn to early summer


          Last updated by: Kim Rogers, 9 December, 1997