Dextrose Based PSB Powder Formulation (Water Soluble) 5x10^7 cells/gram

Phosphate-Solubilizing Bacteria (PSB) are beneficial soil microbes that convert insoluble phosphates into plant-available forms through organic acid production. Formulated at 5 × 10⁷ CFU/g, they enhance phosphorus uptake, reduce fertilizer dependency, and boost crop yields.

Product Specifications

• CFU: 5 × 10⁷ per gram (50 million viable cells/g)

• Active Content: Phosphate solubilizing bacteria

• Carrier: Dextrose powder (pH 6.0–7.5 for optimal activity)

Usage Instructions

1. Dosage: 1–2 kg/acre mixed with 200 L water or compost.

2. Timing: Apply at sowing/transplanting; reapply at flowering.

3. Primary Action: Solubilizes tricalcium phosphate, rock phosphate, and aluminum phosphates.

4. Method:

   • Soil: Mix with FYM/compost (1 kg/100 kg) and broadcast.

   • Seeds: Treat with 20 g/kg slurry (use 10% jaggery as adhesive).

5. Frequency: 2 applications per crop cycle (avoid alkaline soils > pH 8.0).

6. Compatibility: Synergistic with Azotobacter and Rhizobium; avoid chemical P-fertilizers for 15 days.

7. Activation: Requires soil organic matter; suppresses Fusarium via siderophores.

8. Safety: Non-toxic to plants, earthworms, or pollinators.

Suitable Crops

• Cereals: Wheat, rice, maize (P-hungry during tillering)

• Legumes: Soybean, chickpea (enhances nodulation)

• Vegetables: Potato, tomato, cabbage (improves fruit setting)

• Fruits: Banana, citrus (roots absorb soluble P efficiently)

• Others: Sugarcane, cotton, oilseeds

Storage Instructions

• Temperature: 10–25°C (avoid >30°C or freezing).

• Packaging: Airtight opaque bags with desiccant.

• Shelf Life: 24 months ( carrier extends viability).

• Precautions: Store away from moisture, pesticides, and direct sunlight.

Key Advantage

Dual Nutrient Mobilization:
Solubilizes 30–50 kg P₂O₅/ha/season while producing organic acids (citric/gluconic) that chelate zinc/iron, increasing P-use efficiency by 25–40% (IARI trials).