Compare the advantages and disadvantages of manure and chemical fertilizer.

Explanation

Advantages of manure over chemical fertilizer:
• Manure contains different nutrients along with organic matter which improves the texture and quality of the soil whereas chemical fertilizers can replenish only specific nutrients.
• Organic wastes can be recycled during the formation of manure.
• Manure helps reduce environmental pollution.
• Excessive usage of chemical fertilizer leads to air and water pollution
• The formation of organic manure does not involve any depletion of natural resources
• The manufacture of chemical fertilizer leads to the depletion of mineral resources. Hence, usage of manure is a sustainable agricultural process
Advantages of chemical fertilizer over manure:
• Chemical fertilizers can release the nutrients readily and hence, can fulfil the immediate requirements of the plants.
• Release of nutrients from manure takes at least 30 days.
• Chemical fertilizers have high nutrient content whereas manures have low nutrient content.
Thus, chemical fertilizers can increase the productivity