New Zealand wine producers are welcoming a smaller harvest than expected.Wineries throughout New Zealand are reporting lower yields than originally forecast, leaving some predicting a shift in the industry from oversupply to shortfall.In the country's biggest region, Marlborough, Jackson Estate says Sauvignon Blanc is down 15-20% in volume. Volume of its Pinot Noir has fallen 25% due to cold weather at flowering, and low bunch weights.