Preventive protection
Applied before infection, fungicides keep leaves and fruits healthy through risk periods.
Fungicides range
Fungicides: prevention is better than cure
Contact, systemic or combined fungicides: protect leaves, fruits and pods against diseases favoured by tropical humidity.
The basics
What is a fungicide?
A fungicide is a product that protects plants against the fungi and related organisms that cause diseases such as rots, downy mildews, rusts, leaf spots and powdery mildews. In hot, humid climates these diseases spread very quickly and can destroy a large part of the harvest.
Contact fungicides (copper, mancozeb, sulphur) form a protective barrier on the surface of treated plant parts: they are applied before infection and must be renewed after heavy rain or new growth. Systemic fungicides enter the plant and also protect growing tissues.
Benefits
Why choose our fungicides
Contact and systemic action
Complementary modes of action protect plant surfaces and growing tissues.
Multi-site partners
Copper, mancozeb and sulphur carry a low resistance risk and secure your programmes.
Catalogue
Our fungicides in Ghana
Filter by crop to show the products suited to your situation.
Fungicide
BON VICTORY 720 WP
Mancozeb 640 g/kg + Metalaxyl 80 g/kg · WP
Broad-spectrum systemic and contact fungicide combining mancozeb and metalaxyl against late blight, Phytophthora rots and early blight.
Technical sheet
BON VICTORY 720 WP combines 640 g/kg mancozeb, a multi-site contact fungicide that protects the leaf surface, with 80 g/kg metalaxyl, a systemic that moves through the plant and protects new growth. It is used preventively on tomato, pepper, onion and cabbage against late blight, downy mildew and Phytophthora diseases. Limit the number of sprays per season and alternate with fungicides that contain no metalaxyl.
- Active ingredients
- Mancozeb 640 g/kg
Metalaxyl 80 g/kg - Formulation
- WP — Wettable powder
- Mode of action
- Systemic and contact
- Mode-of-action group
- FRAC 4 + M03
- Rainfast period
- 2 h
- Pack sizes
- 1 kg
Key benefits
- Dual action: systemic and contact
- Also protects new growth
- Broad spectrum on vegetable crops
| Crop | Targets | Rate | Timing |
|---|---|---|---|
| Tomato | Late blight, Alternaria blights | 2 – 2.5 kg/ha | Preventive sprays as soon as the weather favours the disease, then every 7–10 days; respect the pre-harvest interval on the label.Max. applications: 4Spray volume: 400 L/ha |
| Pepper & chilli | Phytophthora rots (heart, collar, gummosis) | 2 – 2.5 kg/ha | Preventive sprays as soon as the weather favours the disease, then every 7–10 days; respect the pre-harvest interval on the label.Max. applications: 4Spray volume: 400 L/ha |
| Onion | Downy mildew | 2 – 2.5 kg/ha | Preventive sprays as soon as the weather favours the disease, then every 7–10 days; respect the pre-harvest interval on the label.Max. applications: 4Spray volume: 400 L/ha |
| Cabbage | Downy mildew | 2 – 2.5 kg/ha | Preventive sprays as soon as the weather favours the disease, then every 7–10 days; respect the pre-harvest interval on the label.Max. applications: 3Spray volume: 400 L/ha |
Always read the label before use.
Fungicide
BONZEB 800 WP
Mancozeb 800 g/kg · WP
Mancozeb contact fungicide protecting vegetables, yam and mango against leaf and fruit diseases.
Technical sheet
BONZEB 800 WP contains 800 g/kg mancozeb as a wettable powder. A multi-site contact fungicide, it forms a protective film on leaves and fruit and stops spores from germinating; its multi-site action limits the risk of resistance. Apply preventively and repeat after heavy rain, at the interval given on the label.
- Active ingredient
- Mancozeb 800 g/kg
- Formulation
- WP — Wettable powder
- Mode of action
- Contact, preventive, multi-site
- Mode-of-action group
- FRAC M03
- Rainfast period
- 2 h
- Pack sizes
- 1 kg
Key benefits
- Multi-site action: low risk of resistance
- Broad spectrum of leaf and fruit diseases
- An ideal partner for systemic fungicides
- 1 kg pack, measured by weight
| Crop | Targets | Rate | Timing |
|---|---|---|---|
| Tomato | Alternaria blights, Late blight | 2 – 2.5 kg/ha | Preventive sprays as soon as the weather favours the disease, then every 7–10 days; respect the pre-harvest interval on the label.Max. applications: 6Spray volume: 400 L/ha |
| Pepper & chilli | Anthracnose, Leaf spots (Cercospora) | 2 – 2.5 kg/ha | Preventive sprays as soon as the weather favours the disease, then every 7–10 days; respect the pre-harvest interval on the label.Max. applications: 6Spray volume: 400 L/ha |
| Onion | Downy mildew | 2 – 2.5 kg/ha | Preventive sprays as soon as the weather favours the disease, then every 7–10 days; respect the pre-harvest interval on the label.Max. applications: 6Spray volume: 400 L/ha |
| Cabbage | Leaf spots (Cercospora) | 2 – 2.5 kg/ha | Preventive sprays as soon as the weather favours the disease, then every 7–10 days; respect the pre-harvest interval on the label.Max. applications: 4Spray volume: 400 L/ha |
| Yam | Anthracnose, Leaf spots (Cercospora) | 2 – 2.5 kg/ha | During wet spells, every 10–14 days, covering the foliage well.Max. applications: 4Spray volume: 400 L/ha |
| Mango | Anthracnose | 1.5 – 2 kg/ha | From flowering to fruit set, every 10–14 days in wet weather.Max. applications: 4Spray volume: 1,000 L/ha |
Always read the label before use.
No product in this range is listed for this crop. Contact our advisers for an alternative.
Talk to an adviserAlways read the label before use. Product information is given for guidance only; the label of the product authorised in your country always prevails.
Selection guide
Which fungicide should I choose?
Find your field situation to identify the right BonAgro solution, then check the authorised uses on the label.
| Field situation | Timing | BonAgro solution |
|---|---|---|
| Late blight, downy mildew and Phytophthora diseases of vegetables | Preventively, then every 7–10 days in wet weather | BON VICTORY 720 WPMancozeb 640 g/kg + Metalaxyl 80 g/kg |
| Early blight, anthracnose and leaf spots: vegetables, yam, mango | Preventively; repeat after heavy rain | BONZEB 800 WPMancozeb 800 g/kg |
Good practice
Application tips
Spray preventively: a fungicide protects better than it cures.
Renew contact fungicides after heavy rain or a flush of growth, keeping to the interval on the label.
Combine sprays with sanitation: removing diseased parts, opening up plantations, crop rotation.
Wet all leaves and fruits thoroughly, adjusting the spray volume to the canopy.
Limit the number of systemic fungicide applications and alternate them with multi-site products.
Sustainability
Resistance management
Single-site fungicides (strobilurins, triazoles, phenylamides) carry a medium to high risk of resistance. Mixing or alternating them with multi-site fungicides (copper, mancozeb, sulphur) is the best way to keep them effective.
- Limit the number of single-site fungicide applications per season, as on the label.
- Rotate FRAC groups and favour mixtures with a multi-site fungicide.
- Spray preventively where possible: treating an established disease increases the risk of selecting resistant strains.
- Follow the recommended rate and spray interval.
Modes of action in the range
- FRAC M03 Dithiocarbamates (mancozeb), multi-site BON VICTORY 720 WP BONZEB 800 WP
- FRAC 4 Phenylamides (metalaxyl, metalaxyl-M) BON VICTORY 720 WP
The mode-of-action group is shown on each product's technical sheet.
FAQ
Frequently asked questions about fungicides
Our advisers will point you to the right solution for your crop.
Talk to an adviserShould I wait for the first symptoms before spraying?
No: most fungicides, especially contact products, work best preventively. Start protection when conditions favour the disease (rain, high humidity), as on the label.
What should I do after heavy rain?
Heavy rain can wash off a contact fungicide. Respect the product's rainfast period and renew protection if needed, within the maximum number of applications allowed.
What is the difference between a contact and a systemic fungicide?
A contact fungicide stays on the surface of the plant and stops spores from germinating. A systemic fungicide enters the plant and moves through its tissues: it also protects new growth, but carries a higher resistance risk.
Are copper fungicides suitable for cocoa?
Yes, copper fungicides are widely used to protect pods preventively against black pod. Follow the rate, spray interval and precautions on the label, and combine them with regular removal of diseased pods.
Is sulphur compatible with all products?
No: sulphur must not be applied in hot weather or used with certain oils, whether mixed or applied a few days apart. Always check the label and do a compatibility test before any tank mix.
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