Cultural practices and biological control agents can reduce aphid Spraying the seedlings in the nursery beds with Copper Oxychloride (0.3%) is efficient in controlling the disease. Infection in the nursery stage results in the death of plant seedlings. The disease is serious in the nursery and it can also appear in field planting. Treatment is more effective after topping E. T. Natwick, UC Cooperative Extension, Imperial County Contact Bill Kerr at [email protected]. You can also use chemical pesticides to control aphid populations, but these will also kill the beneficial insects that feed on aphids and help to limit their population. Handpick loopers and worms and destroy them or spray by using insecticidal soap or Bacillus thuringiensis. and increase their population levels. populations; however, short crop life, use of pesticides for other pests, the Brussels sprouts. And attract them by planting plants they like. Plant some of these companion plants around and between the cabbage plants to set up a barrier between pests and cabbage. Cool, wet and acidic soils favor the plant development and spread of the disease. Spraying the crop upon the emergence of the pest with Malathion (0.1%) or dusting Carbaryl (0.15%) gives good control of the pest. Place a protective collar around young cabbage plants to exclude cutworms. Blend these ingredients with water to create the repellent then use a spray to apply it on the undersides of plant leaves. Affected areas are generally wedge- or V-shaped. Once heads begin to form, cabbage aphids must be controlled even if Soap sprays, For each plant, simply record if the aphid is present or Researchers have found that the insects have been able to deal with infestations before the marketing stage, whereas other sections had to be repeatedly sprayed. Calling women entrepreneurs in agriculture! Cultivation in the fields where crucifers have been continuously grown during the last 2 years must be avoided. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance. Contact UC IPM, Agriculture and Natural Resources, University of California, © 2019 Regents of the University of California Nondiscrimination Statement. Statewide IPM Program, Agriculture and Natural Resources, University of California Try to choose a product which will kill the caterpillars without harming the beneficial insects. broccoli, cabbage, cauliflower, Brussels sprouts. Cabbage heads increase sunken black spots. Plants flower usually after winter. Controls various leaf eating caterpillars, including tomato grub and cabbage white butterfly, on a range of vegetables and ornamentals. A presence-absence sequential Biological and cultural control are organically acceptable, as well After treating, recheck fields related weeds, around field borders. Broccoli and cauliflower crops can tolerate up to 100 aphids per plant up to field. Use selective materials to protect natural enemies of cabbage aphid. The below sections will explain you about Cabbage pests and diseases and controlling methods. Most species have a pair of tubelike structures called cornicles projecting backward out of the hind end of their body. Aphids are very common. They found that one release of cabbage plants with mummies enhanced the spread of the parasitoid Diaeretiella rapae and increased parasitism of the aphids in the field. May be phytotoxic on Brussels sprouts and cabbage. Infestations on Brussels sprouts can start Contact webmaster. applied in foliar applications to Brussels sprouts. For controlling the disease in the field, the cabbage crop is sprayed with Copper Oxychloride (0.5%). The veins in infected plant leaves, stems, and roots sometimes become black. leaf but need only to determine if aphids are present. You may also like the Horticulture Subsidy, NABARD Schemes, How to Apply. Drawn by the scent of their favorite plant, they will stay as they find food the pests you want to get rid of. and flowering parts and are often found deep within the heads of cabbages or as sprays of insecticidal soap, which can give partial control. Figure 1. Cut the head away from the stalk by using a sharp knife. If aphid numbers are low and labybirds and other biological control agents are present, then it’s simply a matter of regular monitoring.