Ram and Krishna both decided to grow wheat in their farms and bought seeds of the same quality. Ram cultivated chickpeas before wheat, whereas Krishna planted wheat directly with the required phosphate fertilizers. Ram's yield of wheat was 100 kg and Krishna's was 25 kg. How did Ram get a better yield than Krishna?
Ram and Krishna both decided to grow wheat in their farms and bought seeds of the same quality. Ram cultivated chickpeas before wheat, whereas Krishna planted wheat directly with the required phosphate fertilizers. Ram's yield of wheat was 100 kg and Krishna's was 25 kg. How did Ram get a better yield than Krishna?
The correct option is A Growing chickpea increased yield in Ram's field.
Chickpea is a legume. Legumes have bacteria in root nodules which are on the roots of the plant. The bacterium (called rhizobium) on the root nodules takes nitrogen, an essential mineral nutrient for plant growth, from the air and fixes it into the soil. This provides other plants with the required nitrogen. Wheat crops cannot take their own nitrogen from the air. So, they take up nitrogen from the soil that the legumes have fixed in crop rotation or they need a chemical fertiliser containing nitrogen. Since Krishna's fertiliser had only phosphate but no nitrogen, his yield was lower than that of Ram's.
Growing chickpea increased yield in Ram's field.
Chickpea is a legume. Legumes have bacteria in root nodules which are on the roots of the plant. The bacterium (called rhizobium) on the root nodules takes nitrogen, an essential mineral nutrient for plant growth, from the air and fixes it into the soil. This provides other plants with the required nitrogen. Wheat crops cannot take their own nitrogen from the air. So, they take up nitrogen from the soil that the legumes have fixed in crop rotation or they need a chemical fertiliser containing nitrogen. Since Krishna's fertiliser had only phosphate but no nitrogen, his yield was lower than that of Ram's.
