Cole Crops
Relative Toxicities of Insecticides and Miticides Used in Cole Crops to Natural Enemies and Honey Bees (7/03) ... [... more]
University of California IPM |
Imported Cabbageworm
Check for cabbageworms at the same time as you are monitoring for loopers; your sample should include 25 plants selected randomly throughout the field. Treatment levels combine the two species; however, cabbageworms ... [... more]
University of California IPM |
Herbicide Treatment Table
COMMENTS: Restricted to use before transplanting broccoli, cauliflower, and cabbage. Apply to preshaped beds. If weeds are present, add a surfactant to enhance weed kill. The high rate is especially useful for hard ... [... more]
University of California IPM |
Ringspot
In California, this disease occurs only on Brussels sprouts. Symptoms consist of circular leafspots (0.5 inch in diameter) that range in color from light brown to black. With time these spots develop concentric rings ... [... more]
University of California IPM |
Garden Symphylans
Symphylan damage is generally associated with soils that are high in organic matter content with good soil structure. Symphylans do not thrive in either compact soil or sandy soils because these soils do not provide ... [... more]
University of California IPM |
Darkling Beetles
Darkling beetles are dull bluish black or brown beetles that chew off seedlings or feed on foliage. They can be distinguished from the predaceous ground beetles by the enlargement of the segments at the tip of the ... [... more]
University of California IPM |
Sclerotinia Diseases
Two species of Sclerotinia cause disease on cole crops. Sclerotinia minor only infects stems or leaves in close contact with the soil. Once infection takes place, water-soaked, brown necrotic areas develop on these ... [... more]
University of California IPM |
Fusarium Yellows
Once present, this fungus survives indefinitely in the soil. The pathogen may be introduced to uninfested locations by the movement of infected plant residues and infested soil adhering to farm equipment. This ... [... more]
University of California IPM |
Cutworms
After the crop is up, check for a row of four or more wilted plants with completely or partially severed stems. If you find damaged plants, look for cutworms by digging around the base of plants and sifting the soil ... [... more]
University of California IPM |
Susceptibility Of Weeds To Herbicide Control
MET = metam sodium* (Vapam, Soil Prep) TRI = trifluralin (Treflan) ... [... more]
University of California IPM |
Aphids, Other
Several other aphids may occur on cole crops. The most common is the green peach aphid, which is a yellow-green aphid with prominent tubercles at the base of the antennae. None of the other aphids occurring in cole ... [... more]
University of California IPM |
Diamondback Moth
Diamondback larvae are small (about 0.33 inch when full grown) compared to other caterpillars in cole crops. The larval body is wider in the middle and tapering at both ends with two prolegs on the last segment ... [... more]
University of California IPM |
