Pest problems of broccoli, cabbage and cauliflower
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Black rot and gray leaf spot
- Do not save seed from infected plants.
- Purchase high quality seed. Some companies certify seed to be disease free.
- Use drip irrigation. Space plants for good air movement and drying.
- Do not work in plants when wet.
- Control weeds in and around crop.
- Remove and destroy or bury infected plants after harvest.
- Do not plant Broccoli, Cabbage, Cauliflower, Kohl Rabi, Brussel's Sprouts, Turnip or Rutabaga in the same location for 3-4 years.
- Do not use animal or green manure in spring.
- Delay planting crucifers (until after June 1).
- Remove and destroy host plants in fall.
- Use row covers in spring
- When using row covers, do not plant crucifers in the same area two years in a row.
- Remove weeds and plant residue
- Till garden before planting
- Place cardboard collars or aluminum foil around plant stems when planting transplants.
- Plant as late as possible.
- Control weeds and remove old plants.
- Use a fine meshed fabric to cover plants
Caterpillars--cabbage loppers and cabbageworm
- Destroy old plants after harvest.
- Handpick caterpillars and place them in a container of soapy water.
- Cover plants with a row cover (light weight fabric) until harvest.
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