PSB-IF Treatment
Boost your crop performance from the ground up with PSB-IF™ (Phosphorus Solubilizing Bacteria)—a high-efficiency biological soil amendment that unlocks unavailable phosphorus and enhances nutrient uptake in the root zone. Even in soils where phosphorus exists but is bound and unusable, PSB-IF™ works to convert it into a plant-accessible form through a natural soil acidifying process.
By improving phosphorus availability at planting, PSB-IF™ supports faster germination, better early growth, and stronger stand establishment—giving your crops a powerful head start.
Why Use PSB-IF™?
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Releases bound phosphorus to improve nutrient uptake and plant health
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Not crop specific – effective on row crops, turf, specialty crops, and more
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Promotes stronger stands and early vigor
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2-year shelf life for long-term storage and flexibility
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Biological, sustainable solution to reduce dependence on synthetic phosphorus fertilizers
Product Details:
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Application Rate: 16 oz. per acre
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Packaging: Convenient 2.5-gallon jugs
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Method: In-furrow application at planting for optimal root zone activity
Don’t let phosphorus lock-up hold your crops back. Choose PSB-IF™ for enhanced soil fertility, root development, and yield potential.
PSB yielded more than the untreated check in 9 of 12 corn comparisons from 2017 to 2025.
Yields are in bushels per acre (bu/acre). Green numbers show the difference compared with the untreated check.
Multi-year summary: PSB-IF vs. control
Nebraska corn, 2025
*Beaver Crossing, NE, had a significant wind event in 2025 that lowered overall yields.
Minnesota corn, 2025
*Kerkhoven, MN, and Glencoe, MN, had significant grass pressure in 2025.
Trial-by-trial results
PSB-IF vs. control, corn, 2017–2019
PSB-IF yielded more than the control in 3 of 4 site-years.
- Farmer City, Illinois, 2017: PSB-IF yielded 183.5 bu/acre vs. 185.2 bu/acre for the control, a difference of −1.7 bu/acre.
- Farmer City, Illinois, 2018: PSB-IF yielded 268.2 bu/acre vs. 256.4 bu/acre for the control, a difference of +11.8 bu/acre.
- Yuma, Colorado, 2018: PSB-IF yielded 238.1 bu/acre vs. 229.5 bu/acre for the control, a difference of +8.6 bu/acre.
- Yuma, Colorado, 2019: PSB-IF yielded 224.0 bu/acre vs. 212.3 bu/acre for the control, a difference of +11.7 bu/acre.
PSB-ST Liquid and PSB-IF Liquid, Nebraska corn, 2025
PSB-ST Liquid yielded more than the untreated check at both Nebraska sites. PSB-IF Liquid yielded more at Hastings and slightly less at Beaver Crossing.
- Hastings, Nebraska, 2025: PSB-ST Liquid yielded 272.6 bu/acre vs. 263.8 bu/acre for the untreated check (+8.8 bu/acre). PSB-IF Liquid yielded 265.2 bu/acre (+1.4 bu/acre).
- Beaver Crossing, Nebraska, 2025 (wind event): PSB-ST Liquid yielded 207.6 bu/acre vs. 206.7 bu/acre for the untreated check (+0.9 bu/acre). PSB-IF Liquid yielded 205.7 bu/acre (−1.0 bu/acre). A significant wind event lowered overall yields at this site.
PSB-ST Dry, Minnesota corn, 2025
PSB-ST Dry yielded more than the untreated check at 3 of 4 Minnesota sites.
- Clinton, Minnesota, 2025: PSB-ST Dry yielded 195.9 bu/acre vs. 185.6 bu/acre for the untreated check, a difference of +10.3 bu/acre.
- Glencoe, Minnesota, 2025 (grass pressure): PSB-ST Dry yielded 203.2 bu/acre vs. 201.9 bu/acre for the untreated check, a difference of +1.3 bu/acre. This site had significant grass pressure.
- Kerkhoven, Minnesota, 2025 (grass pressure): PSB-ST Dry yielded 156.0 bu/acre vs. 173.4 bu/acre for the untreated check, a difference of −17.4 bu/acre. This site had significant grass pressure.
- Starbuck, Minnesota, 2025: PSB-ST Dry yielded 201.7 bu/acre vs. 190.2 bu/acre for the untreated check, a difference of +11.5 bu/acre.
See how PSB fits your corn acres
Results last updated .
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