The economic sector of primary production is called agriculture. The aim of the primary production is the targeted production of plant or animal products on an area cultivated for this purpose. The term agricultural industry is also common in science and professional practice. Agriculture is one of the oldest economic sectors of humanity. Today, the utilized agricultural area amounts to approximately 48,827,330 km², which is 9.6 percent of the earth's surface. About one third of the land area of the earth is used for agriculture.