The forestry sector is warning that tree-planting numbers for this year might be about half of what the government predicts in its emission reduction plans. The plan, announced by Minister of Climate Change Simon Watts, aims for a massive tree-planting push to soak up emissions. But the New Zealand Institute of Forestry says the government's numbers are wrong, and the projections are unrealistic. Its president James Treadwell spoke to Ingrid Hipkiss.