Bostak 38% WG Preventive and Curative Fungicide for Powdery Mildew, Gray Mold and Early Blight 1 kg – Boscalid + Pyraclostrobin

• Bostak 38% WG is a systemic fungicide with preventive and curative action that combines two active ingredients, boscalid 25.2% and pyraclostrobin 12.8%, providing two different modes of action against the fungi that cause plant diseases. The formula disrupts energy production inside fungal cells, which limits fungal growth and the spread of infection. It controls a range of important diseases including powdery mildew, gray mold, early and late blight, white mold and apple scab, according to the crops and diseases on the label. It is suitable for tomatoes, peppers, eggplants, cucurbits, potatoes, apples, stone fruits and grapes, and comes as water-dispersible granules for easy preparation and distribution of the spray solution.

Key Features

• Two active ingredients: combines boscalid and pyraclostrobin with two different modes of action against target fungi.
• Preventive and curative action: helps protect plants from infection and limits the development of fungal diseases in their early stages.
• Powdery mildew control: used against powdery mildew in cucurbits and the fruit crops listed on the label.
• Reduces plant rots: targets gray mold, white mold and some stem rots that affect crop growth and quality.
• Protects many crops: suitable for fungal disease programs in vegetables, potatoes, fruit trees and grapes.
• Water-dispersible granules: the WG formulation makes the spray solution easy to prepare and helps distribute the product evenly when used correctly.

Specifications

• Trade name: Bostak 38% WG
• Product type: preventive and curative agricultural fungicide
• Active ingredient 1: boscalid
• Boscalid concentration: 25.2% w/w
• Active ingredient 2: pyraclostrobin
• Pyraclostrobin concentration: 12.8% w/w
• Total active ingredients: 38%
• Formulation: water-dispersible granules (WG)
• Fungicide group: FRAC 7 + 11
• Mode of action: inhibits respiration and energy production in fungal cells
• Action: preventive and curative, with systemic and translaminar activity in plant tissue
• Country of origin: China
• Agent in Saudi Arabia: Al Takamul for Agriculture (ALTAKAMUL)
• Pack weight: 1 kg

Directions for Use

• Apply Bostak at 50–80 g per 100 liters of water, equivalent to 0.5–0.8 g per liter of water, according to the crops and diseases registered on the pack.
• Tomatoes, peppers and eggplants: against gray mold, early blight, late blight and powdery mildew, 50–80 g per 100 liters of water, covering leaves, stems and susceptible parts well.
• Cucurbits: against gray mold, gummy stem blight, powdery mildew and downy mildew, 50–80 g per 100 liters of water, distributing the spray evenly over the foliage.
• Potatoes: against early blight and late blight, 50–80 g per 100 liters of water, timing applications to conditions favorable for disease.
• Apples, stone fruits and grapes: against apple scab, powdery mildew, downy mildew and gray mold, depending on the registered crop and disease, 50–80 g per 100 liters of water, covering leaves, flowers and fruits when needed.
• Preparing the spray solution: partly fill the spray tank with water, add the required amount of product while stirring continuously until the granules disperse well, then top up the tank to the required volume and keep agitating during spraying.

Pre-Harvest Interval (PHI)

• Tomatoes, peppers and eggplants: 2 days before harvest.
• Cucurbits: 2 days before harvest.
• Potatoes: 2 days before harvest.
• Apples, stone fruits and grapes: 7 days before harvest.

Precautions

• Follow the application rate and pre-harvest interval for each crop and do not exceed the recommended doses.
• Do not enter the treated area for 12 hours after spraying, except when necessary and with suitable personal protective equipment.
• Wear gloves, protective clothing and eye and respiratory protection during mixing and spraying.
• Avoid contact with skin and eyes and do not inhale spray mist; do not eat or drink during use.
• Do not spray in strong wind or conditions that may cause drift to neighboring crops.
• Keep the product and sprayer rinse water away from water sources, as it is hazardous to aquatic organisms.
• Do not use FRAC 7 and 11 fungicides repeatedly in succession without a proper resistance-management program.
• Store in the original tightly closed container in a dry, well-ventilated place, away from food, feed and children.

Orkida Tip

• To get the most from Bostak 38% WG, start treatment when conditions favor infection or at the first symptoms, especially in dense crops where humidity builds up between the leaves. Make sure the spray reaches the inner parts of the plant, and do not rely on Bostak alone in repeated applications; rotate with fungicides that have different modes of action to keep your program effective.