Introduction
During the year 80's and 90's there were no scarcity of food and water. Now a day's scarcity of food and water increases as the population increases. To provide more crops fertilizers are being used. Fertilizers are mainly used to provide more crops and it must be used up to a certain limit. But now a day's there is no limit for the use of fertilizers which alters the fertility of soil. For an acre 50 kilograms of fertilizer are being used which is hazardous to human health. For efficient plant growth, nutrients [1], [3], [4] are more important. In soil the nutrients are classified into micro nutrients and macro nutrients. Micro nutrients consist of copper (Cu), manganese (Mn), zinc (Zn), chlorine (C1), boron (B) etc … Macro nutrients consist of potassium (K), phosphorus (P), nitrogen (N) which 1n short is identified as NPK nutrients. Macro nutrients are more essential for plant growth. Plants consume 20% of micro nutrients and 80% of macro nutrients [2]. Plants do not consume the essential nutrients due to alteration in level of fertilizers. Excess use of fertilizers affects the living organisms and leads to abnormal life of human beings. Use of excess amount of fertilizers is considered to be a slow poison for living organisms. To avoid this, pH level of nutrients must be known. By determining the pH level of nutrients in soil, amount of fertilizers to be used can be reduced. When the level of soil nutrient is 75%, then 25% of fertilizer can be used. Medium amount of fertilizer can be used if the soil nutrient level is of 50%. 75% of fertilizer can be used only if soil nutrient level is of 25%. Along with that temperature level of land, humidity and moisture of soil is determined. By determining the soil moisture, wastage of water can be reduced. Using these farmers can decide what type of crop to be planted. The values determined are updated in database for further improvement in agriculture.