A study looked at how different types of nutrients affect the growth of rice and wheat crops in soil. They found that using a mix of organic and chemical fertilizers led to higher rice yields compared to using only chemical fertilizers. Farmyard manure and green manuring of dhaincha were the best organic sources for increasing grain and straw yield. These organic methods also improved the soil's ability to hold water and nutrients. Overall, using a combination of organic and chemical fertilizers improved crop yields and soil health in the long term.