New Zealand commodity prices rose across the board last week, supported by a 4% gain in dairy prices.
Taking a close look, the dairy index was underpinned by a ''whopping'' 11.6% surge in butter prices, the largest weekly price increase since September 2016, ASB senior rural economist Nathan Penny said.
The other main components followed suit, all posting gains last week.
The sheep-beef index climbed 1.3% and the forestry index lifted a more modest 0.9% on the back of higher log prices.
Fonterra last week announced a bullish first cut at next season's milk price of $6.55kg/ms, he said.