Spacing and nitrogen levels were studied to see how they affect the yield of maize. The researchers tested different spacings and nitrogen amounts on a specific maize variety. They found that using 150 kg of nitrogen per hectare and a spacing of 75 cm x 25 cm resulted in the highest grain yield. The closer spacing of 50 cm x 20 cm with lower nitrogen levels produced the lowest yield. This means that for better maize production, it is recommended to plant maize at a spacing of 75 cm x 25 cm and use 150 kg of nitrogen per hectare.