Diverse functions of humans and natural processes by which soil contaminated soil of low quality soil not suitable for crop production does. The increase in human population and human progress in life is causing massive soil pollution. Excessive soil erosion, forest burning, to improve crop production using chemical fertilisers, pesticides (insecticides and Trinnashk medicines), to control the ceta Boyosaid (Malethiyon, Dikdikti, Dildrin, Andrin, Aldrin, Lingayen) Deforestation, Untreated industrial water irrigation, felling of water and contamination of soils is mainly due to excessive irrigation. The rural areas of the country, urban Awrh that grows rapidly day by day.

According to the statistics, it is worth noting that between 1999 and 2000 crop production increased by 18.07 million tonnes and 5.5 million tonnes in 1980 and 81 farmers' chemical fertilisers were consumed. Toxic chemicals that enter the human body through food and newborns in physical disorders, loss of neural tube damage.