Biostadt Duo Guard Fungicide is a combination fungicide containing Cymoxanil 8% + Mancozeb 64% WP. It combines locally systemic and translaminar activity from Cymoxanil with the multi-site contact protection of Mancozeb for management of important oomycete diseases.
Duo Guard is recommended for diseases such as downy mildew in grapes and cucumber, late blight in potato and tomato, and gummosis or foot rot in citrus. Its complementary active ingredients provide rapid penetration into treated plant tissue together with protective coverage on the crop surface.
| Product Name | Duo Guard |
| Brand | Biostadt |
| Company | Biostadt India Limited |
| Product Type | Fungicide |
| Technical Name | Cymoxanil 8% + Mancozeb 64% WP |
| Formulation | Wettable Powder (WP) |
| FRAC Groups | Group 27 + M03 |
| Action | Locally Systemic, Translaminar and Contact |
| Application Method | Foliar Spray; Citrus use according to label directions |
Cymoxanil 8% + Mancozeb 64% WP
| Crop | Target Disease | Recommended Formulation Dose | Water Volume | Waiting Period |
|---|---|---|---|---|
| Grapes | Downy Mildew | 1500–2000 g/ha | 500–1000 L/ha | 10 Days |
| Potato | Late Blight | 1500 g/ha | 500–750 L/ha | 10 Days |
| Tomato | Late Blight | 1500 g/ha | 500–750 L/ha | 10 Days |
| Cucumber | Downy Mildew | 1500 g/ha | 500–600 L/ha | 10 Days |
| Citrus | Gummosis / Foot Rot (Phytophthora palmivora) | 250 g per 100 L water, with linseed-oil treatment as specified on the current label | Use according to label directions | 82 Days |
| Grapes | Approximately 600–800 g per acre |
| Potato | Approximately 600 g per acre |
| Tomato | Approximately 600 g per acre |
| Cucumber | Approximately 600 g per acre |
The acre quantities above are approximate conversions from the registered hectare rates. Always follow the current Duo Guard product label as the final authority for crop-specific dosage, water volume and application method.
Cymoxanil – FRAC Group 27: Cymoxanil rapidly penetrates treated plant tissue and provides locally systemic and translaminar activity. It is particularly active against oomycete pathogens associated with diseases such as late blight and downy mildew.
Mancozeb – FRAC Group M03: Mancozeb is a multi-site contact fungicide. It acts at multiple biochemical sites in fungal cells and provides protective activity on treated plant surfaces.
The combination provides complementary internal and surface protection, helping manage susceptible diseases while reducing reliance on a single fungicidal mode of action.
Duo Guard is recommended for downy mildew in grapes and cucumber. Downy mildew can develop rapidly under humid and wet conditions, so timely application and thorough crop coverage are important.
Apply according to disease risk, crop stage and current label recommendations rather than waiting until disease becomes severe.
Potato and tomato late blight can spread rapidly under favourable cool and humid conditions. Duo Guard combines Cymoxanil's tissue penetration with Mancozeb's protective surface activity for management of registered late blight infections.
Regular field monitoring and timely application are important where late blight conditions are favourable.
Registered-use information for Cymoxanil 8% + Mancozeb 64% WP also includes citrus gummosis or foot rot caused by Phytophthora palmivora. This use has a different application method and dose from normal foliar crop sprays.
For citrus, follow the current Duo Guard label carefully, including the specified use of linseed oil and per-tree treatment instructions. Do not apply the normal field-crop foliar dose to citrus gummosis treatment.
Apply Duo Guard when conditions favour development of the registered disease or during the early stage of infection according to crop and label recommendations.
For downy mildew and late blight, preventive or early disease-management programmes are generally more effective than waiting for severe disease establishment.
Biostadt Duo Guard Fungicide combines Cymoxanil 8% + Mancozeb 64% WP to provide locally systemic, translaminar and contact disease-management activity. It is recommended for important oomycete diseases including downy mildew in grapes and cucumber, late blight in potato and tomato, and citrus gummosis when used according to the registered label directions.
Biostadt Duo Guard is a combination fungicide containing Cymoxanil 8% + Mancozeb 64% WP.
Duo Guard contains Cymoxanil 8% + Mancozeb 64% WP.
Biostadt lists grapes, potato, cucumber, tomato and citrus among the recommended crops and uses.
It is recommended for downy mildew in grapes and cucumber, late blight in potato and tomato, and gummosis or foot rot in citrus.
The registered dose is 1500 g per hectare, equivalent to approximately 600 g per acre. Follow the current product label for final application instructions.
The registered formulation rate is 1500–2000 g per hectare, approximately 600–800 g per acre, depending on disease pressure and label directions.
The registered rate is 1500 g per hectare with approximately 500–600 litres of water per hectare.
The registered waiting period is 10 days for grapes, potato, tomato and cucumber. Citrus gummosis use has a separate waiting period of 82 days.
It provides both types of activity. Cymoxanil has locally systemic and translaminar movement, while Mancozeb provides multi-site contact protection.
No. Use Duo Guard only on crops, diseases and application methods permitted on the current physical product label.
Biostadt Duo Guard Fungicide with Cymoxanil 8% + Mancozeb 64% WP provides complementary locally systemic, translaminar and contact activity for management of important oomycete diseases. It is suitable for registered disease-management programmes in grapes, potato, cucumber, tomato and citrus when applied according to the recommended dose and current label instructions.
Disclaimer: The details provided are for informational guidance only. Always adhere to the recommended application instructions as stated on the product label and in the accompanying leaflet.
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