G. I. McDonald

• Armillaria in the northern Rockies
• Computer simulation of white pine blister rust epidemics
• Differential defoliation of neighboring Douglas-fir trees by western spruce budworm
• Influence of temperature and spore stage on production of teliospores by single aeciospore lines of Cronartium ribicola
• Occurrence of armillaria spp. in forests of the northern Rocky Mountains
• Resistance of Douglas-fir to western spruce budworm
• Effect of rooting mediums and hormone application on rooting of western white pine needle fascicles
• Occurence of Armillaria spp. in forests of the northern Rocky Mountains
• Resistance of western white pine to blister rust
• Resistance to Cronartium ribicola in Pinus monticola
• Resistance to Cronartium Ribicola J.C. Fisch. ex Rabenh. in Pinus Monticola Dougl. seedlings