Projects 

• Demonstration of tree selection and silviculture to optimize restoration success with koa (Acacia koa)
• Can control of acacia psyllids reduce the formation of multiple stems on koa saplings?
• Acacia koa gene expression along elevation and precipitation gradients
• Effects of koa moth defoliation
• Developing wilt resistant Acacia koa for Hawaii
• Acacia koa pollination biology and genetic markers for koa wilt resistance
• Parent tree selection and wood quality of a 9-year-old Acacia koa stand
• Subirrigation as an innovative new technology to reduce water consumption for native plant nursery production
• A delay in leaf form transition as a shade avoidance response in two populations of Hawaiian Acacia koa from contrasting environments

Announcements

Koa seed orchards for Hawaii reforestation

Recent land use changes have led to opportunities to reforest large areas of degraded land with koa and there is now a large demand for improved koa seeds and seedlings. To meet this demand, HTIRC members have been awarded a competitive grant from the Forest Service State & Private Forestry and are working together to establish seed orchards to produce an abundant supply of seeds for reforestation across a range of environmental conditions from high to low elevations.