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 Heading to Harvest
- 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?
Monitor for pests and their damage:
- Aphids (cabbage aphid and other aphids)
- Beet armyworm
- Cabbage looper
- Imported cabbageworm (except in southern desert)
- Sweetpotato whitefly
Manage according to the Pest Management Guidelines.
Monitor for and identify crop quality issues and note these for next year's management.
- Bacterial head rot in broccoli
- Downy mildew in broccoli and cauliflower
- White stem in broccoli
- Abiotic disorders:
- Broccoli brown bead
- Calcium deficiency in cauliflower
- Cracked stem
- Hollow stem in broccoli
If necessary, make nitrogen, phosphorus and potassium fertilizer decisions on soil tests; however, these are generally not needed late in the crop cycle. Base nitrogen fertilizer applications on quantities of residual soil nitrate in the soil.
- CropManage can help guide nitrogen fertilizer decisions.
- See the following publications for more
- 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).
Clean harvest equipment and tractors before they enter the field to prevent the spread of soilborne pathogens, weed seeds, and perennial propagules. Screen surface water sources of irrigation to avoid spreading weed seeds.
Note the presence and abundance of disease from soilborne pathogens at harvest for planning next season's management.