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They are generally insoluble in water and non-biodegradable.Therefore, these chemicals will not gradually decompose and keep on accumulating in the soil.However, everyone gradually the adverse effects of this chemical which led to the ban of this chemical in many parts of the world including India.
Soil Pollution has gradually become a major challenge that we need to overcome for establishing a healthy environment.
Weathering of earth’s crusts by different processes leads to the formation of soil that accumulates over the centuries.
Before World War II, the chemical nicotine chemical present in the tobacco plants was used as the pest controlling substance in agricultural practices.
However, DDT was found to be extremely useful for malaria control and as pest control of many insects during World War II.
Soil pollution refers to anything that causes contamination of soil and degrades the soil quality.
It occurs when the pollutants causing the pollution reduce the quality of the soil and convert the soil inhabitable for microorganisms and macro organisms living in the soil.
The harmful effect of DDT and other chemicals led to the introduction of less persistent organic and more-biodegradable substance such as carbamates and organophosphates.
However, these chemicals act as harmful toxins for nerves, hence they are more dangerous to humans.
Soil contamination or soil pollution can occur either because of human activities or because of natural processes. The soil contamination can occur due to the presence of chemicals such as pesticides, herbicides, ammonia, petroleum hydrocarbons, lead, nitrate, mercury, naphthalene, etc in an excess amount.
The primary cause of soil pollution is a lack of awareness in general people.