Pigeon pea is a high-protein crop grown in India. It is often grown with other crops like legumes and cereals in a system called intercropping. Intercropping can increase yields and improve soil quality. For example, when maize is grown with cowpea in southern Africa, the soil gets more nutrients. Adding biofertilizers like Rhizobium and mycorrhizal fungi can further boost plant growth and nutrient uptake. Overall, intercropping pigeon pea with other crops can have a positive impact on plant health and soil fertility.