A study was done to find the best way to manage nutrients for growing maize and mustard crops together. They tested different combinations of farmyard manure and chemical fertilizers. The results showed that using 50% farmyard manure for maize and 100% chemical fertilizers for mustard gave the highest yields and profits. This method was better than using only chemical fertilizers or other combinations of farmyard manure and fertilizers. So, for growing maize and mustard together, using a mix of farmyard manure and chemical fertilizers can be the most effective way to get good results.