Fungicide Efficacy in Prevention of Root Rot in Fraser Fir Seedlings Incited by Phytophthora cactorum and P. drechsleri [2010-2011]
During the summers or 2010 and 2011 I conducted outdoor experiments in raised planting boxes to assess the effectiveness of several fungicides to prevent Phytophthora root rot of Fraser fir (Abies fraseri) seedlings incited by Phytophthora cactorum and P. drechsleri. The fungicides tested were dimethomorph, fosetyl-Al, hydrogen dioxide, mefenoxam, and propamocarb hydrochloride.
I tested the sensitivity of the Phytophthora isolates used in the experiments to label recommended rates of fosetyl-Al, hydrogen dioxide, fosetyl-Al, mefenoxam, and propamocarb hydrochloride via lab plate testing.
This study was accepted for publication in HortTechnology and is currently in press.