Given below are two statements: Assertion (A): Green manuring is the practice of enriching soil by growing crops and ploughing them into the soil to improve physical properties and fertility. Reason (R): Dhaincha ( Sesbania spp.) is the most popular crop for green manuring and soil fertility enhancement.

Correct option is A

Green manuring involves growing specific crops and incorporating them into the soil to improve soil fertility and structure. These crops add organic matter and nutrients, especially nitrogen, to the soil after decomposition. Dhaincha is widely used because of its fast growth and high biomass production, making it ideal for green manuring. Therefore, both the assertion and reason are true, and R correctly explains A.
Information booster: Green manuring improves soil physical, chemical, and biological properties simultaneously. Dhaincha is a leguminous crop capable of fixing atmospheric nitrogen through symbiosis. Incorporation of green manure enhances microbial activity and nutrient availability. Green manuring is an important practice in sustainable and organic farming systems.
Why other options are incorrect: (b) This option is incorrect because the reason clearly explains the assertion. (c) This option is incorrect as both statements are correct. (d) This option is incorrect because neither statement is false.