What is one of the risks associated with over-irrigation?

One of the significant risks associated with over-irrigation is the potential for increased weed growth. When excess water is applied to an area, it can create a moist environment that is ideal for weeds to proliferate. Weeds typically thrive in wet conditions, which can lead to a rise in their populations and consequently compete with desirable plants for nutrients, water, and light. This not only impacts the health and yield of crops but can also elevate management costs, as further measures may be required to control these unwanted plants.

While higher mowing can sometimes lower irrigation needs, this option does not directly address the risks associated with over-irrigation itself. Options that involve lower soil fertility or increased pesticide application also do not capture the immediate and direct impact of excessive watering, which primarily fosters the ideal growth conditions for various weeds. Overall, it is vital for fertilizer applicators to manage irrigation practices carefully to mitigate these risks effectively.