Which pest transmits Stewart's wilt in corn?

Stewart's wilt in corn is specifically transmitted by the corn flea beetle. The corn flea beetle is a significant pest known for its ability to carry the bacterium that causes Stewart's wilt disease, which can lead to severe yield losses in corn plants. When the beetle feeds on the corn, it can introduce the pathogen into the plant, resulting in symptoms such as wilting, stunting, and in severe cases, plant death.

Understanding the role of the corn flea beetle in this disease cycle is crucial for effective pest management strategies. Control measures can include monitoring for beetle populations, implementing crop rotation, and using resistant corn varieties to mitigate the impact of Stewart's wilt.

The other pest options listed do not have a role in the transmission of Stewart's wilt, as they target corn in different ways or do not vector the bacterium responsible for this particular disease. Thus, it is essential to focus on the corn flea beetle when considering management practices for Stewart's wilt in corn.