2) using mechanical harvesting. Currently, the mechanization began to play a role in the harvest. Because labor is scarce and expensive. Especially in developing countries, many countries, most commonly used to produce a mechanical resistance to impact and simultaneously both the early harvest. And for harvesting produce to processing plants. For the most part remain fresh produce. Workers harvest with people Because the machine can not distinguish the light of the yield. And indelicate enough to harvest So by using mechanical harvesting only. Is used in the production of crops such as rice, sugarcane and horticultural produce at harvest to processing plants are mainly pineapple, tomatoes and so on.