CDFA Pest Prevention Plant Regulation Practice Exam

When inspecting sweet potato slips, where would you look for larvae of the sweet potato weevil?

1. In soil about the roots

2. On leaves and stems of plants

3. On the stems

4. In the tubers

The correct answer is: On the stems

When inspecting sweet potato slips for larvae of the sweet potato weevil, the correct focus would be on the stems. The sweet potato weevil is known for its life cycle that significantly impacts the stems of sweet potato plants, where it lays its eggs. The larvae emerge and can create visible damage to the stems as they burrow and feed, which is crucial for the overall health of the plant. While it's important to examine the other areas listed, such as the soil, leaves, and tubers, the primary concern with sweet potato weevil larvae is their activity on and within the stems. This is where the signs of infestation, including entry holes and other damage, are most likely to be observed. By focusing on the stems, a more accurate assessment of potential threats to the sweet potato slips can be conducted.