Tag: for a pollution free nature

Soil erosion is controlled by: 
Using geotextiles is an effective method because it also stabilizes soil
The simplest and most natural way to prevent erosion is through planting vegetation.
Reducing deforestation and substituting chemical manures by animal wastes also helps arrest soil erosion in the long term.

The direct discharge of industrial waste into the soil causes the soil to erode and becomes useless for agriculture and any other purpose.

Waste water from industries should not be used for irrigation without eliminating toxic chemicals from the effluent.
It is a measure to control soil pollution.
This will also reduce the concentration of unwanted substances in the soil.

Industrial pollutants affect and alter the chemical and biological properties of soil.
With the advancing agro-technology, huge quantities of fertilizers, pesticides, herbicides and weedicides are added to increase the crop yield. 
Urban wastes comprise of both commercial and domestic wastes consisting of dried sludge and sewage.
all of them causes soil pollution.

Now-a-days, herbicides are frequently used in the place of pesticides. these are also chemical compounds such as $NaClO _3, Na _3AsO _3$ etc., has become more frequent but they are also toxic to mammals.

DDT is a pesticides which is used for pest control in agricultural production but not only pesticides decrease the fertility of the soil but also penetrate into crops and produce health hazards.

Pesticides are chemical compounds which are water insoluble and non-biodegradable.

Fertilizers are the chemical compound which is used in agricultural land to increase the fertility of soil. The use of fertilizers for long time makes the upper layer harder and renders the soil infertile.

A large number of heavy metal such as radium and thorium gets accumulated in the soil in the areas having metal smelting industries. These heavy metals decrease the fertility of soil.

Soil erosion is a phenomenon in which soil of an area eroded due to deforestation, over-grazing, unplanned irrigation, etc., decrease the fertility of soil.