The researchers studied how different amounts of nitrogen fertilizer affect the growth and yield of summer millet. They found that applying nitrogen improved the plant characteristics and grain yield. The best results were seen with 150 kg/ha of nitrogen for one type of millet and 225 kg/ha for another type. Applying nitrogen at the right times also made a difference in yield. Overall, using the right amount of nitrogen at the right times can help increase the productivity of summer millet crops.