What is one negative consequence of improper irrigation management?

Improper irrigation management can lead to nutrient runoff, which is a significant environmental concern. When irrigation is not managed effectively, it can result in excess water being applied to fields. This excess water can wash away not only the soil but also the nutrients present in the soil, transporting them into nearby water bodies. This runoff can contribute to water pollution, harming aquatic ecosystems and potentially leading to issues like algal blooms, which can deplete oxygen levels in water and affect fish and other wildlife.

On the contrary, options like increased crop yield and enhanced soil fertility typically arise from good irrigation practices, as well as proper pest management. Decreased pest presence is often a result of integrated pest management strategies rather than irrigation practices alone. Thus, the negative consequence of nutrient runoff is a direct impact of improper irrigation management, highlighting the importance of applying the right amount of water at appropriate times to maintain both crop health and environmental integrity.