From: John Beckett 

"Gary Wiltshire"  wrote in message
news::
> You break up the ground and add organics to it.  And what's with wheat?
> What about rice?

Thanks for the insight, but the point is that vast areas of the US have
more than twenty feet of fertile top soil, while almost all of Australia
has less than a few inches.

Taking significant amounts of food from soil requires either:
- A lot of fertile soil (defer the problem). -or-
- A lot of input.

I'm happy with rice, but any crop requires nutrients.

John

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