The water is coming from three new bores sunk on the coastal strip, each about 50m deep. Between them they can dish out as much water at any time as the town of Whanganui is using.
The potential for the warm, free-draining, irrigated coastal soils is huge, Mr Dalrymple says.
The farm now grazes dairy cows, lambs and beef cattle as well as growing maize, oats, lucerne, barley and vegetables such as onions, peas and pumpkins.
But that's only the beginning, Mr Dalrymple says. The world will be needing bulk commodities for the next 50 years, and the Ohakea Air Force Base 7km could accommodate planes carrying high-value freight around the world.
"Probably your best area to be in is berries. They're a very good option for New Zealand, and certain fruits."
He can also see potential for growing more meats, with chicken and pork possible as well as red meat.
"China took its first plane-load of chilled meat on Saturday."