Historians don't know the date of start of fertilization in the history of mankind, but the fertility of the soil and its effective using has been interest by the ancient empires farmers. Over thousands of years had been proven that the soil has a renewable capacity that humans can turn their own benefit as well. This textbook provides help to study about the production of human foodstuff and the cultivation of forage plants. It reveals the relationship between soil and plant, which the farmers can use for management of farm. Agro-chemistry is a relatively new discipline, which involves laws of many different disciplines such as soil science, chemistry, physics, biology, botany and mathematics.