Question

Cow dung that is used as a fertilizer can be replaced by

• A. Insecticides.
• B. Pesticides.
• C. Biofertilizers.
• D. None of the above.

Answer 1

The correct option is C Biofertilizers.

Traditionally, cowdung is used as a fertilizer. It provides growing medium for plants. It is nutrient-rich fertilizer. It is either mixed into the soil or used as top dressing. However, methane (greenhouse gas) is emitted from cowdung when it is processed. Hence, it is replaced by biofertilizers. Biofertilizers are substances which contains live organisms and are used to increase fertilizer of the soil. Examples of biofertilizers include rhizobium, azotobacter, azospirillum and blue green algae(BGA).

Thus, the correct answer is option C.