What is the primary food source for mole crickets?

The primary food source for mole crickets is plant roots. These pests are known to burrow into the soil, where they feed on the roots of various plants, particularly grasses and other turf species. Their feeding habit can cause significant damage to lawns and crops, as the roots are essential for the health and stability of plants, providing them the necessary nutrients and water.

In contrast, leaves of box elder trees, grain crops, and grass stems are not the main diet for mole crickets. While they may occasionally impact other parts of plants, their primary feeding preference is specifically focused on the roots, which is why the correct answer centers on this aspect of their behavior. Understanding their feeding habits is crucial for effective pest management in agricultural and turf settings.