Improper irrigation scheduling can lead to a range of negative consequences, including water waste, reduced crop yields, and increased susceptibility to disease and pests. Overwatering can cause root rot, while underwatering can lead to drought stress, reducing plant growth and productivity. Additionally, improper irrigation scheduling can also contribute to environmental issues, such as groundwater contamination and surface water pollution. By implementing an effective irrigation schedule, farmers and gardeners can minimize these risks and optimize plant growth and water use.