The researchers tested two inhibitors, TU and DCD, to prevent loss of nutrients in stored urine and improve vegetable growth. They found that using TU led to higher yields of summer radish and lettuce compared to using DCD or no fertilizer. Summer radish fertilized with urine + TU had the highest weight and yield increase, showing that TU was more effective in controlling fertility loss than DCD. Overall, the results suggest that using inhibitors like TU can positively impact crop growth and fertility management.