If he could, Reno chef Greg Butler would like to use more locally grown products at his Buenos Grill.And if he could, Fallon farmer Rick Lattin would like to see more of his neighbors growing crops specifically for northern Nevada consumers such the diners at Buenos Grill.A nascent group of small farmers, restaurant owners and social activists is beginning to chip away at what they acknowledge to be big challenges in the way of increasing consumption of locally grown foods by the area's consumers.At the same time, they've set some big goals, kicking around the hope that 20 percent of …