Parthenium Biological Control Agents

Puccinia abrupta var.partheniicola (parthenium rust)

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	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