In India, there is a lot of writing against use of fertilizers in agriculture because if their harmful effects on human body. But the fact is that fertilizers usage in India is low at less than 200kg per hectare per year, while in countries like Vietnam, South Korea and China it is about 300kg or more/ha/year. In a few countries, the usage is as much as 500kg/ha/year. In Africa the usage is very low, but larger usage is being encouraged. While fertilizers are being used in Europe and USA for several years, in India, large scale usage of fertilizers is only of recent phenomenon. Because of low consumption of fertilizers in India,the yield of various crops is low compared to developed countries.While China produces more than 500 million MT of cereals on less than 100 million ha, India produces less than 300 million MT in more than 100 million ha.
In this context, it is relevant to note that the human body is made up of oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. potassium, sulfur, sodium, chlorine, and magnesium. All these are necessary to life.Inorganic fertilizers also contain usually more or less same chemicals like nitrogen, phosphorus and potassium (NKP) calcium, sulphur, magnesium etc.
So it is necessary to have more research on whetheruse of chemical fertilizers are really harmful to human body and if so how much or whether human body can get used to taking food grains etc. grown with the use of fertilizers. On the basis of the results of the research,
the use of fertilizers can be increased or decreased.