Question

Question 17
Beera, wants to practice crop rotation in his field. Suggest a Rabi crop and a Kharif crop which will replenish his field with nitrogen. Which crop replenishes nitrogen and why?

Answer 1

Beera could start by growing a Rabi crop like pea/gram first. Pea/gram is a leguminous plant, which means it has Rhizobium bacteria at its root nodules. These bacteria help in fixing atmospheric nitrogen. After harvesting the Rabi crop, Beera could follow up with a Kharif crop such as rice which requires good nitrogen content in the soil. This nitrogen is provided from the fixation by the Rabi crop.