Regular field observation is the foundation of responsible pest management. Detecting unusual symptoms early gives farmers time to identify the cause and select an appropriate response.
What to look for
- Fresh holes, notches or scraped areas on young leaves
- Folded, webbed or rolled leaves
- Discolouration, wilting or uneven crop growth
- Eggs, larvae or insects on the underside of leaves
- Damage appearing in patches or along field borders
Scout the field systematically
Walk through the field in a zigzag pattern and inspect plants at several locations. Record what you find, including the crop stage, affected area and number of insects observed. Photographs can help an agriculture adviser identify the problem.
Avoid rushed treatment decisions
Leaf damage can have several causes, and beneficial insects are also present in crop fields. Confirm the pest and assess whether it has crossed the locally recommended economic threshold before using a crop-protection product.
Always follow the registered product label, dosage, safety precautions and waiting period. Consult a qualified agriculture expert for recommendations suited to your location.