Thailand is a country with rich agriculture, which is heavily agricultural region, although it is not the primary sectors revenues into the country. The agricultural sector, it is important to feed the mouth, the stomach of the people in the country, including the income from the export of the country with which Thailand's agricultural products are important, but not the person who made the manual cultivation of Thailand still lacks knowledge in developing agriculture to grow หน้.Even more, but those who do most of the agricultural products will have a relatively poor position because in agriculture, most of the people in Thailand have high costs, but less profit is not enough to use everyday. It also has a lot of chemicals that affect health. The farmers also want to secure from the chemicals. No one wants to use dangerous chemicals because both ourselves and the consumer. But if not, then what is to be used as a substitute. A problem, because the farmers have planted two finds is dead or is not a matter of soil fertility of the soil, if not use chemical fertilizer, will use anything as a substitute, and the issue of preventing and eliminating pests. If you do not use the chemicals and what to use substitutes.