|
|
How to Manage Pests
UC Pest Management Guidelines
Cotton
Monitoring Spider Mites, Aphids, and
Thrips (Seedling Cotton)
(Reviewed 2/05,
updated 2/05)
In this Guideline:
|
|
|
Start sampling for aphids, spider mites,
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 four quadrants of the field
- Use a hand lens to examine the first true leaves or cotyledons of random plants looking for damage and 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 or more days.
Go to the specific pest sections for more information on when to treat and
treatment options.
![[UC Peer Reviewed]](/IMAGES/logo-ucpeerreviewed.jpg)
UC IPM Pest Management Guidelines: Cotton
UC ANR Publication 3444
General Information
L. D. Godfrey, Entomology, UC Davis
P. B. Goodell, UC IPM Program, Kearney Agricultural Center, Parlier
E. T. Natwick, UC Cooperative Extension, Imperial Co.
D. R. Haviland, UC IPM Program, Kern Co.
Acknowledgment for contributions to the insects and mites section:
E. E. Grafton-Cardwell, Kearney Agricultural Center, Parlier
N. C. Toscano, Entomology, UC Davis
Top of page
|
