Slingshot in Action
SLINGSHOT brings the power of our proven liquid biology to dry acres, delivering high-density, broad-spectrum biodiversity where liquids can’t go.
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Understanding Slingshot
Slingshot is a dry biological inoculant for acres where liquids aren’t an option, delivering the same broad-spectrum biodiversity as our leading liquid products. In dryland barley trials, 3 oz/acre with dry fertilizer boosted yields by 27%, with soil biodiversity driving better yield and quality through four key mechanisms.
- Improvement of nutrient availability
- Introduction of organisms acting as biocontrol agents
- Production of growth-stimulating metabolites
- Reduction of plant stress
Slingshot is a concentrated biological inoculum formulated with broad-spectrum, beneficial bacilli, Paecilomyces, and Trichoderma fungi species. Slingshot is a Plant Growth Promoting Rhizobacteria (PGPR). This inoculum provides more than traditional plant nutrient uptake by promoting healthy soil biofilm on strategic root and plant surfaces. These AGBIOFILM® layers become strategic exchanges for nutrient flow and relief of crop stress. Carbon flows efficiently back and forth through these layers, carrying nutrients to the plant and sugars back to the microbes. This exchange is the key to effective yield increase. Slingshot is a dry inoculum in spore form to be used in conjunction with dry fertilizer applications with the goal of establishing AGBIOFILM® ecosystems in the soil, on the leaf surface, and in the root rhizosphere. Slingshot may stimulate root development, increase plant vigor, yield, and produce quality.
RECOMMENDED Application
For use on all agricultural crops and applications. Apply 100–800 g per acre per year on field crops. For tailored rates and instructions, contact your local PHARMGRADE representative. This product mixes with many fertilizers and pesticides, but always perform a jar test first to ensure compatibility.
HANDLING AND STORAGE
Follow appropriate safety procedures. Skin contact may cause temporary staining. In case of accidental exposure, flush with plenty of water. The product is non-hazardous. Store in a cool, dry place out of direct sunlight. Caution: Keep out of reach of children. Contact poison control if ingested.
Why Choose Slingshot
Slingshot is the culmination of 20 years of nutrient acquisition research. It is an assembly of the most active species of bacteria and fungi critical for acquiring and solubilizing plant nutrients in the soil. SLINGSHOT is a critical tool to get the most out of your dry fertilizer applications. It supercharges the efficiency of your fertilizer in the following ways:
Protect:
Most fertilizer additives use different chemistry to “protect” the nutrient by blocking tie-up with other elements in the soil. Slingshot does this on multiple fronts: It is fortified with nutrient-complexing organic acids that protect fertilizer from tying up in the soil.
Activate:
Microbes are the most dynamic players in nutrient acquisition. They have co-evolved with plants to provide nutrient transformations necessary for plant availability in exchange for carbon from root exudates. Slingshot inoculates the fertilizer prill with exactly the right bacteria and fungi that secrete nutrient-solubilizing enzymes and other compounds to ensure they are in a plant-available form.
Utilize:
Slingshot offers the ability not only to maximize your investment in the fertilizer application it is added to, but will also populate the soil and begin to mine fertilizer that has already been tied up in the soil in years past. Specific selection criteria were applied in assembling the roster for Slingshot.

How To Use Slingshot
Slingshot was formulated to be blended in dry fertilizer applications. The species in Slingshot were chosen for their ability to solubilize nutrients, both from the fertilizer and from the nutrients already tied up in your soils. Adding Slingshot technology to your fertilizer blends ensures the nutrients make it to the plant as well as all the other soil nutrients, building the benefits of a well-rounded Biological.
Recommended Rate of 15 oz per ton of dry fertilizer. ($105 per ton vs $115 per ton with Avail)
Slingshot is a specialized fertilizer efficiency tool in the Pharmgrade lineup, built to maximize the performance of dry fertilizer applications. While Pharmgrade liquid products are best for directly influencing plants and soil biology, Slingshot focuses on improving nutrient availability and reclaiming value from past fertilizer investments. Simply coat your dry fertilizer and apply it as you normally would—no changes to equipment or process are needed. When used as directed, Slingshot can increase fertilizer availability and efficiency by 15–20%, giving you more return from every acre.
Once applied, Slingshot’s microbial species go to work on two fronts. They immediately enhance the effectiveness of the fertilizer they coat, making this year’s nutrients more accessible to your crops. At the same time, they mine nutrients banked in your soil from past unprotected fertilizer applications, recovering valuable inputs that would otherwise remain locked away.
Protected, high-efficiency fertilizers are not new, but Slingshot brings an added advantage. Alongside proven fertilizer protection mechanisms, it delivers nutrient-mining microbes that ensure you get the full value from this season’s fertilizer while unlocking nutrients that have been stored in your soil over time, helping you make the most of both past and present investments.

AWARDS & RECOGNITION

