Synergistic Xemium and F-500 Dual Active Chemistry
Priaxor unites two complementary modes of action: Fluxapyroxad is an advanced Succinate Dehydrogenase Inhibitor (SDHI - FRAC Group 7), which blocks Complex II respiration in fungal mitochondria. Its unique molecular structure allows it to move easily through both lipophilic cuticles and hydrophilic cell structures.
Pyraclostrobin belongs to the strobilurin class (QoI - FRAC Group 11), inhibiting mitochondrial Complex III respiration. Together, they prevent fungal spore germination, block mycelial growth, and inhibit sporulation.
- Xemium SDHI Mobility: Moves systemically through xylem vessels and redistributes across the leaf surface.
- F-500 Strobilurin Energy Block: Shuts down fungal ATP synthesis while enhancing plant nitrate assimilation.
- AgCelence Plant Health: Increases green leaf area, improves drought tolerance, and boosts photosynthetic yield.
Target Fungal Diseases and Labeled Crops
Priaxor is registered under CIBRC standards for controlling destructive fungal diseases across oilseeds, cereals, pulses, and cash crops. It is widely used in soybean farming for managing frogeye leaf spot (Cercospora sojina), anthracnose, and rust.
In maize, it controls southern corn leaf blight; in cotton, it manages Corynespora target leaf spot; and in groundnut, it prevents tikka leaf spot and collar rot, preserving photosynthetic canopy through harvest.
- Soybean Protection: Safeguards soybean foliage against frogeye leaf spot and rust during flowering and pod development.
- Maize Foliar Health: Prevents leaf blights from causing premature senescence before ear filling.
- Groundnut Tikka Defense: Protects green leaf area to maximize kernel weight and oil content.
Field Application Guidelines and Best Practices
Apply Priaxor preventively at the onset of disease conditions or at critical crop developmental stages (such as flowering or early pod setting). Ensure uniform spray coverage using calibrated hollow cone nozzles mounted on knapsack or power sprayers.
To delay resistance development against SDHI and strobilurin chemistries, avoid more than two sequential applications per season, and alternate with multisite protectants or triazole fungicides.
- Optimal Timing: Apply at vegetative-to-reproductive transition before fungal lesions become widespread.
- Water Volume: Maintain adequate spray volume to ensure thorough leaf canopy wetting.
- Pre-Harvest Interval (PHI): Adhere strictly to the pre-harvest interval indicated on the registered product packaging.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What active ingredients are in BASF Priaxor fungicide?
Priaxor contains Fluxapyroxad 16.7% + Pyraclostrobin 33.3% SC (Suspension Concentrate).
What is the advantage of Xemium technology in Priaxor?
Xemium (Fluxapyroxad) features high lipophilic-hydrophilic mobility, allowing rapid systemic absorption and prolonged redistributive protection across plant tissues.
Which major diseases does Priaxor manage in soybean?
It manages frogeye leaf spot, anthracnose, and soybean rust, while enhancing green leaf retention through AgCelence benefits.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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