The Primary Production Select Committee sees its role as being the voice of rural New Zealand, says chair Mark Cameron.
Higher costs for petrol and new housing helped push up CPI.
At least 75,000 visa holders will benefit from the changes.
National Party MPs to attend the protests around the country.
The National Party describes the proposed funding as a "taxpayer bribe".
Lost value over three years has report author calling for a government investigation.
National accuses the government of implementing policies by stealth, yet many were in Labour's election manifesto.
Speed of change means there will be some very unjust outcomes, CPA says.
The new agency told it doesn't need to maximise profit.
Select committee announces inquiry with wide terms of reference.