A study was conducted to find the best way to grow rice and other crops while maintaining soil fertility. By using a combination of ammonium sulphate, green manure, and farmyard manure, the researchers were able to achieve high rice yields and improve the soil's nutrient levels. The most successful method involved growing rice after cowpea and rice bean as fodder, along with a specific fertilizer regimen. This approach not only increased crop yields but also improved the soil's nutrient content, leading to better overall productivity and profitability.