The researchers studied how different levels of water stress and combinations of nitrogen fertilizer and vermicompost affect the growth and protein content of sorghum plants. They found that sorghum plants grew best with 75% nitrogen and 25% vermicompost under mild water stress conditions. This combination resulted in the highest plant height, seed yield, and protein content. In contrast, plants grown with 100% vermicompost and high water stress conditions had lower growth and yield. Overall, using a mix of nitrogen fertilizer and vermicompost under mild water stress can help maximize the quantity and quality of sorghum crops.