1. UC IPM
Brown dead leaves on limbs of Raywood ash limb that were killed by drought stress in combination with a weak pathogen, <i>Botryosphaeria stevensii</i>. This disease complex is called Raywood ash canker and decline.
Brown dead leaves on limbs of Raywood ash limb that were killed by drought stress in combination with a weak pathogen, Botryosphaeria stevensii. This disease complex is called Raywood ash canker and decline.
Credit: Jack Kelly Clark