Conserving Agricultural Environment Grade 7 Agriculture Revision Notes

Description

Soil Pollution Control

Soil pollution – refers to anything that causes contamination of soil and reduces the soil quality.

• It occurs when the substances causing the pollution reduce the quality of the soil and convert the soil inhabitable for microorganisms and macro organisms living in the soil.
• Soil contamination or soil pollution can occur either because of human activities or because of natural processes.
• However, mostly it is due to human activities. 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.