 Although wine grapes now constitute the main crop of the valley, fruit orchards are still important, as well as wheat, and various row crops such as soy beans, sorghum, corn, and sunflowers.The growing of olives for olive oil has recently become important as well, and several vineyards grow both grapes and olives.The first commercial winery in the valley was started by the Schultz brothers, who after operating for twenty or so years sold their operation in 1889 to Suisun winemaker Louis Mangels, who at the time ran one of the largest wineries in the state.