- tree nut production
- postharvest issues of tree nuts
- chemistry of tree nuts
- breeding systems of hardwood forestry species
- conservation of Fontainea rostrata
Dr David Walton has extensive experience in horticulture in both a practical and academic sense. Practical experience comes from a career in horticulture before enrolling at university. Subsequently he completed a PhD based on postharvest issues of macadamia nuts. David also has a keen interest in sustainable agriculture, environmental management and native vegetation.
Postdoctoral research has involved assessing the potential of Eucalyptus argophloia (Chinchilla White Gum) for hardwood forestry in low rainfall areas; adapting and refining techniques for postharvest processing of the tropical nut Canarium indicum to benefit farmers in the South Pacific (Papua New Guinea, Vanuatu and the Solomon Islands); and investigating the cause of brown centres in macadamia kernels. Present research involves the development of Canarium nut and tamarind industries in Melanesia and the use of biochar for improvement of soil fertility, microbial activity, productivity and long-term carbon sequestration.