A study looked at how using farm yard manure (FYM) and different levels of NPK fertilizers affected rice and wheat crops. They found that applying FYM with 120 kg N, 60 kg P, and 60 kg K per hectare gave the highest yields. The crops also absorbed more nutrients when FYM and NPK fertilizers were used together. The soil quality improved too, with better pH levels, more organic carbon, and increased availability of NPK nutrients.