Chemical fertilizers are important factors that help to increase productivity and can lead to increased revenue. However, farmers lack the knowledge of the chemical fertilizers is right and proper dosage. The uses of chemical fertilizers consecutive time of affect soil quality, such as soil tightly, clay, and acidic soil. Cause pollution of soil and water resources. Farmers invest increased use of chemical fertilizers to maintain productivity, affecting the production cost and prices of agricultural products due to the uncertain. They have a high risk investment.