Life cycle All rusts are obligate or biotrophic parasites, meaning that they require a living host to complete their life cycle. They generally do not kill the host plant but can severely reduce growth and yield.Central Science Laboratory. (2006). Plant Healthcare: Rusts [Fact Sheet]. Retrieved from www.csldiagnostics.co.uk Cereal crops can be devastated in one season; oak trees infected in the main stem within their first five years by the rust Cronartium quercuum often die.
Life cycle All rusts are obligate or biotrophic parasites, meaning that they require a living host to complete their life cycle. They generally do not kill the host plant but can severely reduce growth and yield.Central Science Laboratory. (2006). Plant Healthcare: Rusts [Fact Sheet]. Retrieved from www.csldiagnostics.co.uk Cereal crops can be devastated in one season; oak trees infected in the main stem within their first five years by the rust Cronartium quercuum often die.