The study looked at how using a mix of organic and chemical fertilizers in rice and mustard crops can improve soil health and crop yield. They found that adding organic manure like farmyard manure (FYM) along with NPK fertilizer increased soil fertility and organic carbon levels. This led to better soil quality, increased water retention, and reduced soil compaction, creating a good environment for plant growth. The use of only chemical fertilizers resulted in poorer soil health and lower crop yield. Overall, adding organic manure like FYM is crucial for sustainable crop production and maintaining soil quality in intensive cropping systems.