Distinguish between fertilizer and manure. Give suitable examples

Distinguish between fertilizer and manure. Give suitable examples. What are advantages and disadvantages of using fertilizer ?

Differences between manures and fertilizers:

Manure Fertilizer
* Natural substance obtained by the decomposition of plant and animal remains by bacteria * Inorganic substances or compounds
* Provides humus to the soil * Does not provide humus to the soil
* Less rich in plant nutrients * Rich in plant nutrients such as nitrogen, phosphorus and potassium
* Can be prepared in fields * Prepared in factories
* Inconvenient to store and transport * Easy to store and transport
* Absorbed slowly by plants * Absorbed readily by plants
* Example: Green manure * Example: Urea

Advantages of artificial fertilizers:

  • Nutrient-specific
  • Have plant nutrients in concentrated form
  • Provide quick replenishment of plant nutrients in soil
  • Highly soluble in water
  • Easily absorbed by plants
  • Easy to store, transport and handle

Disadvantages of excessive use artificial fertilizers:

  • Reduce the fertility of soil
  • Change the chemical nature of soil
  • May cause water pollution through runoff