Agriculture definition includes cultivation, integral incidental operations, and allied pursuits like aquaculture when tied to land production. Agriculture includes soil cultivation and allied operations necessary to produce and prepare crops and livestock; incidental operations contiguous to basic cultivation are agricultural when integral to raising produce. The term embraces all land products used for consumption or trade, including forest products and allied pursuits such as controlled fish rearing, but excludes activities that only have a remote connection with land and are not part of cultivation or the continuation of land-produced crops.