Agriculture and livestock have been traditionally important for the state, and while it only provides about four percent of the state’s GDP, down from eighteen percent in 1970, it employs a far larger percentage of the population, with it being the basis of the economy in many rural areas. 28.24% of state land is used for agriculture, mostly raising corn, wheat, alfalfa, sorghum and squash. There is also intensive farming in areas of a number of important crops. Much of the large scale farming is irrigated and is supported in part by the state government, with loans and help with infrastructure such as water and roads. However, most farmland is seasonal, meaning it is worked only during the rainy season. Grains such as barley, wheat, oats and alfalfa are almost exclusively planted on irrigated land along with certain vegetables such as broccoli, garlic, carrots, lettuce, onions and cauliflower. Most nonirrigated land is planted with corn, followed by beans mostly for auto or local consumption. Leading cash crops are beans, cabbage, alfalfa, onions, lettuce and sorghum.