A farmer, after harvesting rice in one season, planted groundnuts in the next season. What do you think is the reason? Explain.
Answers
by doing so farmer wants to maintain fertility of soil as ground nut is a legumes which posses root nodule with rhizobium bacteria which will does nitrogen fixation and maintain soil fertility.
Answer:
Rotational Crop: When a plant grows from seeds, it constantly consume nutrition and the amount is dependent on the type of plant. After harvesting that type of crop, those nutrients are no more available in that soil. To bring it back, crops are being rotated for a certain period of time. Like after harvesting rice in a season, groundnut is planted in next season.
Groundnut plantation regenerates nitrogen fertilizer in the soil to enable the farmer to harvest rice in next season. It is by rhizobia, a bacteria. Which first it infects groundnut root and help to convert atmospheric Nitrogen (N2) to Nitrogen.