Soil pollution

K.K.WAGH COLLEGE OF AGRICULTURE

DEPARTMENT OF SOIL SCIENCE

COURSE NO.AEL-SSAC.486

TITLE-SOIL AND WATER CLINIC

PRESENTATION ON-SOIL POLLUTION

PRESENTED BY-DUDHE GAURAV

CHANDRASHEKHAR

DATE OF PRESENTATION-

SOIL- Soil is dynamic natural body composed of

mineral matter and organic matter and living forms in which plant grows.

POLLUTION- An undesirable change in the physical

chemical or biological characteristics of air, water or soil.

SOIL POLLUTION- The undesirable change in physical,

chemical and biological characteristics of soil, which are harmful for all living beings.

1) Agricultural pesticides

2) Disposal of solid wastes on land

3) Mining activities

4) Biological agents

5) Radioactive pollutants

6) Heavy metal pollutants

The use of inorganic nutrients for a long time

gradually declines the soil fertility.

The intensive inappropriate tillage practices lowers

the capability of soil.

The solid wastes are mostly generated from industrial, domestic and urban and agricultural sources.

The solid wastes generated in indian cities mainly contains sludge, glass materials, metallic cans, fibres, waste paper, packing materials, leather.

The top layer of soil is generally damaged or destroyed during both shaft and strip mining practices.

The uncontrolled mine fires may also destroy the productivity of the areas near mines.

The major sources of biological agents causing soil pollution are human excreta, animal and bird excreta, muncipal wastes, faulty sanitation.

The industrial parasites are among the most threatening biological agents.

Huge amounts of radio-active substances result from nuclear device explosion, nuclear testing laborateries, nuclear power plants and weapons.

All these are responsible for enhancing soil pollution.

Heavy metals in soil are basically due to industrial discharges.

Certain heavy metals eg. Zn, Cu, Ni, Cd and Pb are also present in significant levels in sewage sludge and reach the soil where they become part of life cycle and affects adversly.

1. Soil fertility is adversely affected if pesticide remain in soil for longer period.

2. Excessive use of fertilizers and pesticide chemicals does not allow microbial flora and fauna in soil to flourish.

3. Excessive use of nitrogen and phosphatic fertilizer makes the soil deficient in other micronutrients like Zn, Co etc. and causes nutrition imbalance.

4. Pesticides like DDT, dieldrin etc.are known to seep graduallythrough soil into ground water and thus contaminate public drinking water supplies.

5. People in contact with pesticides are extremely prone to get poisoned.

6. Some of the industrial wastes are extremely toxic for organisms.

7. Solid urban wastes and industrial wastes produce foul and offensive odour.

8. Heavy metals and other toxic substances can destroy benefecial microorganisms of the soil.

9. Radioactive pollutants can cause a number of undesirable disease of digestive system if they enter our body through food chain.

1. Adoption of sustainable agriculture having organic farming and use of biofertilizers, biointegrated pest management and proper water management, composting etc.

2. Adoption of suitable and proper industrial and urban wastes management.

3. Adequate controlled use of heavy metal and toxic substances.

4. Non-biodegradable wastes can be recycled and used again

5. Biomedical wastes should be carefully disposed off so that it does not create any health hazard.

DON’T USE EXCESS CHEMICAL FERTILIZERS

DON’T USE EXCESS CHEMICAL PESTICIDE

THANK YOU….