Stellar 250SC Fungicide

Stellar Fungicide

A reliable broad-spectrum fungicide for nurseries and agriculture

Diseases such as powdery mildew, downy mildew, rusts, leaf spots and botrytis can spread quickly through nursery stock and field crops, reducing plant quality and marketable yield. Stellar Fungicide provides an effective preventative option for growers who need consistent, broad-spectrum protection across a wide range of crops.

Stellar contains 250 g/L azoxystrobin and is a Group 11 fungicide, giving strong activity against key foliar diseases in nursery plants, vegetables, fruit trees and broadacre horticulture. It is suited to both nursery production and agricultural systems where clean foliage and reliable protection are essential.

Key Features and Specifications

• Active ingredient: 250 g/L azoxystrobin

• Fungicide Group: 11

• Broad crop suitability, including nursery stock, ornamentals, fruit trees, brassicas, alliums, carrots, cucurbits, peas, potatoes and more

• Controls or suppresses major diseases such as:

  • Downy mildew

  • Powdery mildew

  • Rusts

  • Leaf spots (Alternaria and Colletotrichum)

  • Botrytis (grey mould)

  • Sclerotinia in several vegetable crops

• Suitable for dilute or concentrate spraying (up to 4X concentration) in field and nursery settings

• Compatible with selected insecticides and fungicides when used as directed

Application and Usage Instructions

General Use

Apply preventatively. Stellar is not designed for curative action, and delaying sprays until disease appears will reduce performance. Ensure thorough coverage of all plant surfaces.

Nursery Stock and Ornamentals

• Rate: 80 to 120 mL per 100 L water

• Diseases: Downy mildew, powdery mildew, rusts, leaf spots, botrytis

• Directions: Apply sufficient spray volume to wet all foliage.

• Maximum of 2 consecutive applications, with a minimum interval of 14 days.

• Test on a small group of plants before full-scale use to check for sensitivity.

Vegetable and Field Crops

Brassica Vegetables

• Alternaria leaf spot: 400 mL/ha

• White blister and Sclerotinia: 500 mL/ha

• Apply 7 to 14 days apart depending on pressure.

Cucurbits

• 80 to 120 mL per 100 L

• Controls powdery mildew, downy mildew and gummy stem blight

• Apply at 7 to 14 day intervals with higher rates under favourable disease conditions.

Alliums (garlic, shallots, spring onions, leeks)

• White rot suppression: 800 mL/ha

• Downy mildew (leeks): 300 mL/ha

• Apply 2 to 3 sprays at 7 to 14 day intervals.

Carrots

• Powdery mildew: 1 L/ha

• Sclerotinia: 400 mL/ha

• Apply 10 to 14 days apart, ensuring good foliage coverage.

Potatoes

• Early blight: 300 to 400 mL/ha

• Late blight: 500 to 600 mL/ha

• Apply every 7 to 14 days; suitable for ground or aerial application (aerial for early blight only).

Resistance Management

As a Group 11 fungicide, Stellar must be rotated with products from other chemical groups. Overuse of Group 11 fungicides increases the risk of resistance development.

General guidelines:

• Do not apply more than one-third of total fungicide sprays in a crop as Stellar.

• Do not apply more than 2 consecutive sprays before switching to fungicides from a different mode of action.

• Always follow a preventative spray schedule.

Why Choose Stellar Fungicide

Consistent protection for nurseries and broadacre horticulture

Stellar offers dependable preventative control across an extensive range of crops, making it a practical choice for growers who need one versatile fungicide to manage multiple diseases. With flexible application rates, broad compatibility and strong plant safety when used correctly, it supports high-quality production across nurseries and agricultural systems.