The study looked at how using poultry manure and different weed control methods affected the growth of three types of maize plants in Nigeria. They found that using poultry manure or NPK fertilizer, along with a specific weed control method, led to higher levels of chlorophyll, dry matter, and grain yield in two of the maize varieties tested. This suggests that planting these maize varieties with the right fertilizer and weed control can improve maize production in the area.