Why are biofertilizers preferred over chemical fertilizers in sustainable farming?
(1) They kill pests directly
(2) They increase crop size instantly
(3) They fix atmospheric nitrogen and do not degrade soil
(4) They make crops mature faster
Answer (2)
Biofertilizers are favored in sustainable farming because they naturally fix atmospheric nitrogen and help maintain soil health, promoting sustainability without environmental harm. This makes them preferable to chemical fertilizers, which can degrade soil quality. Therefore, the correct answer is (3) They fix atmospheric nitrogen and do not degrade soil.
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Biofertilizers are preferred over chemical fertilizers in sustainable farming for several reasons:
Environmental Benefits : Biofertilizers, such as those containing nitrogen-fixing bacteria like Rhizobium, naturally fix atmospheric nitrogen into a form that plants can use, reducing the need for synthetic nitrogen fertilizers.
Soil Health : Overuse of chemical fertilizers can lead to soil degradation and decrease soil fertility over time. Biofertilizers enhance soil health by improving its organic content and microbiological activity without causing degradation.
Sustainable Agriculture : They are a component of sustainable agriculture because they are renewable, eco-friendly, and help maintain a balanced ecosystem. They reduce the dependency on chemical fertilizers and improve the sustainability of agricultural practices.
Non-polluting : Unlike chemical fertilizers, biofertilizers do not contribute to environmental pollution, such as water pollution, which is often caused by the runoff of excess chemicals into water bodies.
Based on the provided multiple-choice options, the correct answer is: (3) They fix atmospheric nitrogen and do not degrade soil .
Biofertilizers do not typically kill pests directly or make crops mature faster, which addresses why options (1) and (4) are not correct. While they can contribute to the health and vigor of crops, they do not generally increase crop size instantly, addressing why option (2) is incorrect.
