Seed orchard and field trial design and establishment.
Data analyses and quantitative analyses.
In USA he was involved in a fledgling breeding program for Abies fraseri as a graduate student. This was proceed by 6 months in Chile providing advice to their E. globulus and P. radiata co-operative breeding programs. In New Zealand his focus was on tree improvement and propagation and whilst there he pioneered commercial P. radiata vegetative propagation programs and managed intensive breeding programs for both Pinus radiata and temperate eucalypts.