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Cotton > Year-Round
IPM Program >
Crop Emergence—Seedling Growth > Monitor for Spider Mites, Aphids, Thrips on
Seedling Cotton
Cotton
Monitor for Spider Mites, Aphids, and Thrips on Seedling Cotton
Start sampling for spider mites, aphids, and thrips as soon as plants emerge. Walk the fields once or twice a week
looking for the pests and their damage.
When and how to sample:
- Sample once or twice a week.
- Walk down rows in all quadrants of the field.
- Use a hand lens to examine the first true leaves or cotyledons of random plants. Look for damage or insects and
mites.
Treatment thresholds
- Thrips. No treatment is generally required. Treat for thrips only if plants show poor growth, there is terminal
damage, and thrips are present in significant numbers.
- Mites. Treat for mites if defoliation is occurring and the mite populations are high.
- Aphids. Treat for aphids if high populations persist for 7 days or more.
See the UC pest management guidelines for more information on thresholds and treatment options.
Important links
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