shannon shepp is the deputy commissioner of the florida department of agriculture. she says research is intensifying on trying to find a cure. but some growers are calling it quits, as the cost of keeping trees healthy is just too high. "there are two sides to that challenge. the first one is fruit loss is absolutely a killer on your economic side, for the growers. the second is that trying to prevent the disease, or caretaking in the groves, those costs are also an economic killer." "our production cost from before psyllids and greening went from about $600 an acre to about $2200 an acre." story estimates 10% of his crops will need to be replaced. but he's optimistic florida's sweet fruit will survive. "i would just like to say that we've seen a lot of challenges over the years, and we've met them, and we're still viable." reporting from central florida for first business, i'm jackie keenan. coca-cola is not going to let greening stand in the way of its oj business. it is spending $2 billion to plant 25,000 new acres of orange groves for its simply juice brands. g