By Blake Jackson
For maximized yields and profits, soybean farmers implement Integrated Pest Management (IPM). This science-based approach combines methods to control insects before significant damage occurs. Regular scouting and targeted treatments based on economic thresholds (pest levels that threaten profits) are key aspects of IPM.
Scouting for Pests
Scouting involves regularly checking fields to assess insect populations. This helps farmers decide on pest management during the season and plan for the future. Techniques include visually counting insects, using tools like sweep nets, and checking for damaged plants.
General Scouting Tips:
- Scout weekly.
- Divide large fields into manageable sections (40-50 acres) considering factors like soil type and past pest issues.
- Walk a systematic pattern (U, X, or W) to cover the entire field, avoiding good or bad spots.
- Start at a different location each time you scout.
- Don't just check field edges, as insects may migrate from surrounding areas.
- If a problem is found, determine if it's isolated or widespread.
- When assessing defoliation (leaf loss), consider the entire soybean canopy.
Insect Identification Matters
Correctly identifying insects and the damage they cause is crucial for choosing the most effective pest management strategy.
Targeted Treatment with Thresholds
Insecticides are only recommended when the number of insects or the damage they cause surpasses established thresholds. These thresholds, based on growth stages and insect levels, help prevent unnecessary spraying. This approach delays the development of resistance to insecticides and allows natural predators to flourish.
By following these IPM principles, soybean farmers can effectively manage insect pests while optimizing yields and profitability.
Photo Credit: istock-sandramatic
Categories: Missouri, Crops, Soybeans