Year-Round IPM Program Pages
This year-round IPM program covers the major pests of cole crops in the Central Valley, Central and Southern Coast, and southern desert of California.
About Rosette to Heading
- Special issues of concern related to environmental quality: pesticide and fertilizer runoff and leaching.
- Mitigate pesticide effects on air and water quality.
What should you be doing during this time?
Make nitrogen, phosphorus and potassium fertilizer decisions based on soil tests (however, these are generally applied preplant). Make nitrogen fertilizer applications based on quantities of residual soil nitrate.
- The online decision support tool CropManage can help guide nitrogen fertilizer decisions.
- See the following publications for more information:
- Using the Pre-Sidedressing Soil Nitrate ‘Quick Test’ to Guide N Fertilizer Requirements (PDF)
- Broccoli Production in California, UC ANR Publication 7211 (PDF).
- Cabbage Production in California, UC ANR Publication 7208 (PDF).
- Cauliflower Production in California, UC ANR Publication 7219 (PDF).
Decide if hand weeding is needed to remove weeds before the canopy closes.
Monitor for pests and their damage and manage as needed according to the Pest Management Guidelines:
- Aphids (cabbage aphid and other aphids)
- Bagrada bug
- Beet armyworm
- Cabbage looper
- Diamondback moth
- Garden symphylan
- Imported cabbageworm, except in southern desert where it is rarely a problem.
- Cabbage webworm (in the southern desert, where it is an occasional problem)