Fusarium wilt is a fungal disease that affects various plants, including sweet potatoes. When it comes to sweet potatoes, Fusarium wilt is primarily caused by the pathogen Fusarium oxysporum. Here are some symptoms you should look out for in sweet potatoes affected by Fusarium wilt:
- Stunted growth: Infected sweet potato plants may exhibit slow or stunted growth compared to healthy plants. The affected plants may appear smaller and less vigorous overall.
- Wilting: One of the characteristic symptoms of Fusarium wilt is the wilting of leaves, particularly during the hottest parts of the day. The wilting may be temporary at first but can become more permanent as the disease progresses.
- Yellowing leaves: The leaves of infected sweet potato plants may exhibit yellowing or browning, starting from the tips and edges and gradually spreading towards the center. The yellowing may progress until the leaves turn brown and eventually die.
- Leaf drop: As the disease progresses, infected sweet potato plants may experience leaf drop, where the leaves wither, dry up, and fall off prematurely. This can contribute to the overall decline in plant health.
- Internal discoloration: When you cut open the sweet potato tubers, you may observe brown discoloration or streaks in the vascular tissues. This internal discoloration is a characteristic symptom of Fusarium wilt.
It’s important to note that the symptoms of Fusarium wilt can vary depending on the severity of the infection, the specific strain of the pathogen, and environmental conditions. If you suspect Fusarium wilt in your sweet potato plants, it is recommended to consult with a local agricultural extension service or a plant pathology expert for an accurate diagnosis and appropriate management strategies.
