World dairy prices rose 1.8 per cent in the latest overnight auction, with whole milk powder prices soaring 9.2 per cent.

World dairy prices dipped in last nights online global dairy products auction.

NZ commodity prices rose for a second month in September, in the strongest monthly gain in a year and a half.

Fonterra said its net profit fell by 19 per cent to $624 million in the 2011-12 year to July 31.

What are the benefits, if any? And is it inevitable? Two views from opposite sides of the argument from Agram chief executive Graeme Peters and university researcher Professor Jack Heinemann.