Thailand's excellent climate, long growing season, large expanses of flat land and rice soils all play a part in the success of agriculture. This mix of factors is very important because agriculture determines both the lifestyle and income of the rural people. Agricultural products are important to Thailand's economy because crops production is a source of international trade. Thailand leads the world in production and in exports of canned pineapple, rice, rubber and black tiger prawns. Thailand is the most important producer of chicken and eggs for all Asian countries. It is estimated that the farmers of Thailand produce enough food to feed more than four times their own population.