The experiment compared growing maize alone versus growing maize with soybeans in a 4:2 ratio. They studied the plants' height, leaf area, root length, and yield over three years. The intercropped maize plants were taller with more leaves early on, but lower later. The roots of intercropped maize were longer, with more surface area and volume. The intercropped maize had longer ears and more grains per row. Overall, the intercropped maize had a higher yield per unit area compared to growing maize alone.