Download 17748 Temperature treatment protocol for deactivating oospores of Phytophthora agathidicida

Oospores of Phytophthora agathidicida are formed in the roots of New Zealand kauri. The infected roots are capable of initiating the progression of kauri dieback. Research has found that heating moist soil to 50C for 72 hours, across all soil types will effectively eliminate P. agathidicida oospore viability. Further research is required to test whether moderate temperatures can kill oospores in infected kauri seedlings while maintaining seedling viability.