| How Do Soil Contamination Affect Plant Growth ?
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Different manmade changes are being made to the natural resources like water and soil. The products used by human being contain harmful chemicals, which affect microorganisms present in the soil. These chemicals are responsible for soil contamination, which in turn affects plant growth.Fertilizers containing high concentration of nitrogen and phosphorus kill useful bacteria and fungi. |
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So, instead of giving more advantage, these harmful chemicals have their drawbacks. Pesticides and insecticides are used to improve the growth of the plant and to kill the pests and insects. However, excess use of these chemicals causes infertility in soil.
Waste disposed by industries and factories also contains organic, inorganic, acidic and basic compounds which alters the nature and composition of the salt. The condition becomes worst with exposure of radioactive elements is done by nuclear chain reactions.
Soil erosion is also responsible for affecting the plant growth negatively. This causes the eradication of useful minerals from the upper layer of soil. Deforestation is one of the major causes of soil erosion.
Solid waste as well as liquid waste like oils and fuels generates a major problem. Water containing salt is also one of the major reasons.
For photosynthesis, plants require different minerals like nitrogen, calcium, potassium, phosphorus, magnesium and sulfur. These nutrients are provided to the plant by soil. Ammonium nitrate and phosphorus as P2O5 containing fertilizers are toxic in nature, and these ultimately harm the growth and quality of plants.
Therefore, it can be said that soil contamination through chemicals and toxins reduces the number of plant products. Also, the amount of protein and carbohydrate decreases in cereals like rice, wheat and pulses. The concentration of Vitamin C and carotene decreases in vegetables due to soil contamination.
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How Do Soil Contamination Affect Plant Growth
