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Proteas

Proteas are flowering plants known for their striking, colorful blooms and unique, spiky appearance, native to South Africa.

DISEASES
PESTS

Products for Proteas

The products for proteas were chosen to effectively manage common diseases like Anthracnose, Fusarium, and Phytophthora, and to control pests such as the African Bollworm, ensuring healthy and vibrant blooms.

Daconil Weatherstik

Fungicide

Revus

Fungicide

Score

Fungicide

Subdue Maxx

Fungicide

Agrimec Gold

Insecticide

Chess

Insecticide

Meridian

Insecticide

Proclaim

Insecticide

Rotations

Chemical rotations in agriculture refer to the practice of alternating between different chemicals (fungicides, insecticides, or herbicides) with different modes of action to manage pests, diseases, or weeds effectively. This strategy helps prevent the development of resistance in the target organisms and ensures better control of the pest or disease over time.

Colletotrichum Rotation

Use Daconil Weatherstik, Score, and Heritage in rotation to control Colletotrichum, preventing resistance buildup.

Drechslera Rotation

Use Daconil Weatherstik, Switch, Score, and Heritage in rotation for Drechslera control, minimizing resistance risk.

Rust Rotation

Alternate Score and Daconil Weatherstik to effectively control rust diseases, using different modes of action.

Botrytis Rotation

Rotate Daconil Weatherstik, Switch, Score, and Heritage for Botrytis management, using different modes of action.

Phytophthora Rotation

Alternate to Subdue Maxx, Clear Out, and Heritage for Phytophthora control, a water mold, using different modes of action.

Thrips Rotatio

Rotate Agrimec Gold, Meridian, and Thiovit Jet to manage thrips. Note: Thiovit Jet should not be sprayed during the flowering.

Aphids Rotation

Rotate Chess and Meridian to manage aphids, using different chemical groups to prevent resistance development.

Powdery Mildew Rotation

Rotate Score, Daconil Weatherstik, Heritage, and Thiovit Jet for powdery mildew. Note: Avoid Thiovit Jet in flowering.

Mites Rotation

Rotating Thiovit Jet, Meridian, and Agrimec Gold, prevents the mites from developing resistance to a single product.

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Colletotrichum

Pathogens such as Colletotrichum affect most ornamentals, including bedding plants, cut flowers, and cut foliage, tropical foliage plants and woody crops. Colletotrichum can result in massive losses. It is also possible to incur huge losses by planting plugs contaminated with foliar diseases. Unless environmental conditions are bad for the disease, it will continue while the product finishes. The chief symptom of a leaf spot disease is spots on foliage. Fungal leaf spots rarely kill a crop, but on rooted cuttings, such as pittosporum, Colletotrichum can result in massive losses.

Symptoms:

  • Leaf spots can vary in shape and size, but tend to be more rounded in appearance and typically have distinct margins with a coloured border
  • As the lesion expands, concentric rings may be visible within the lesion Integrated Management Tips:
  • Remove infected leaves and dead twigs. Raking up and disposing of infected leaves as they drop and pruning out dead twigs can help control the disease by removing spores that can reinfect the new leaves. This is not a cure but may help limit infection. Keep foliage dry. Avoid overhead watering. Use soaker hoses or water early in the day so the foliage can dry off before night. Watering can also spread the disease by splashing. Pruning plants to allow for good air circulation and reducing crowding will also help keep the foliage dry.
  • Keep plants healthy. Since most plants can tolerate some defoliation, keep them in good health so they can rebound quickly. Avoid over fertilizing by testing the soil first. Abundant, young, tender growth is very susceptible to attack by disease and insects. Overuse of nitrogen can cause an abundance of succulent growth.
  • Use fungicides if needed. In rare cases of severe infection and where the size and value of plants make it practicable, applications of fungicides may be helpful. Sprays will not cure infected leaves. Therefore, once the damage is noticed, spraying may have limited value. Spraying generally needs to be started as buds break in the spring and repeated at 10–14-day intervals. Recommendations will vary by disease and fungicide used. Have the disease identified before purchasing a control product

Drechslera

Drechslera is a fungal disease and is caused by fungi in the genus Colletotrichum, a common group of plant pathogens that are responsible for diseases on many plant species. Infected plants develop dark, water-soaked lesions on stems, leaves or fruit. Spots or blotches that are angular are generally referred to as Drechslera. Leaves may yellow and drop prematurely.

 Symptoms:

  • Infection often first becomes apparent at a portion of the leaf margin.
  • The affected plant tissue frequently progresses from chlorotic to necrotic.
  • Infected leaves develop tan to reddish brown lesions that are typically associated with leaf veins; leaves that have already expanded may become cupped and distorted with large areas of dead tissues.
  • In severe cases leaf drop occurs.

 • To manage the disease, rake and destroy fallen leaves, prune out dead or infected branches, mulch and water during dry periods. Better control is more likely when fungicides are applied on a 7-to-10-day interval compared to a 14-day interval. This is especially apparent during the rainy season when spores of the pathogen are actively splashing. For this pathogen, spraying weekly in a preventative manner may be necessary to obtain the optimal results