Polluted water used for irrigation also pollutes the soil and the pollutants from sewage, fertilizers and chemicals deposit from factories directly deposits  on the soil. This polluted soil, affects plants and vegetations growth. The Nitrogenous substances produced by the organic matter from the sewage decomposition in the soil is very harmful for plants and trees.  Metal toxity symptoms may also occur in plants when various heavy toxic metals release by the decomposition of sewage water. Premature defoliation and yellowing in the plants is a major symptom of plants getting effected by soil contamination

Ash used for landfilling also makes the soil unfit for vegetation and plantations as it releases toxic substances. Many a times when the fertilizers and chemicals are use in excess, the unused fertilizers cause soil pollution and harms the crops as excess nitrogen causes deficiency of potassium and proteins and increased carbohydrate storage. This also upsets the amino acid balance in the vegetation. Ammonium fertilizers also injures the plants as it creates acids in the soil. Excessive potash decreases the carotene and ascorbic acid in the plantations.

Different soil characteristics are affected by organic and inorganic substances present in the industrial wastes which deposits in the soil and hampers the growth of plants. These substances make the soil acidic or alkaline which harms the growth of plants. Radioactive materials present in the industrial sewage also affects the metabolism of plants and changes their characteristics and the nutrients of the plants.

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