Final answer:
Yes, it is advisable to plant cabbage after groundnuts because groundnuts add nitrogen to the soil, which is beneficial for the growth of cabbage.
Therefore, option A is correct.
Step-by-step explanation:
It is advisable to plant cabbage on the same piece of land previously used for a groundnut farm. Groundnuts, like other legumes, have a symbiotic relationship with soil bacteria that fix nitrogen, enhancing the soil's fertility. This relationship means that legumes can take nitrogen from the atmosphere and convert it into a form that plants can use. When groundnuts, which are legumes, are ploughed back into the soil, they can contribute significant amounts of nitrogen, much like lucerne ploughed back can add up to 350 kilograms of nitrogen per hectare. Since cabbages are heavy feeders of nitrogen, following groundnuts with cabbage can be very beneficial due to the increased availability of this vital nutrient. Additionally, crop rotation, which involves planting different crops in succession, helps maintain soil health and nutrient balance, preventing the depletion of specific nutrients and reducing the build-up of pests and diseases associated with continuous cultivation of the same crop.