Borkin lifted his quarterly forecast for GDP to the survey average 0.5 per cent from 0.3 per cent.
Christina Leung, economist at ASB, sees 0.6 per cent growth in the quarter.
"A large part of this reflects an increase in milk production and livestock slaughter, which we expect will have boosted agriculture and food manufacturing production over Q1," Leung says. Growth of 0.6 per cent was "modest" as it will remain over the coming months.
The Reserve Bank's revised forecasts are for a weaker track of GDP growth in the first half of 2012 from what it was picking in the March MPS. The cycle peaks a quarter late with March 2013 GDP forecast at 0.9 per cent versus the March estimate of growth peaking at of 1 per cent stating in December this year.
"The resulting moderation in export incomes, although partially offset by depreciation in the exchange rate, will weigh on economic activity in New Zealand," Bollard said last week.
The central bank expects housing market activity, spurred by lower interest rates, and rebuilding in Canterbury will lift construction activity in coming quarters.
In the first three months of the year, the value of residential building work put in place fell about 1.5 per cent to $1.35 billion, government figures show. Non-residential construction rose 1.8 per cent to $1.15 billion. That left the overall value of work put in place unchanged at $2.5 billion.
Traders have almost given up their bets that Bollard will cut the official cash rate any time soon. Some 12 basis points of cuts are priced into the Overnight Index Swap curve for the next 12 months. That's up from almost 50 basis points of cuts to the official cash rate seen in early June.