Commercial Solutions
PT81
PT81 is a unique, mineral-based foliar spray that controls and prevents fungal and bacterial plant diseases even at low application rates. This solution is designed for use in greenhouses, nurseries, and open fields. It offers broad versatility across many food and non-food crops, including annuals, perennials, tropical foliage, potted flowering plants, shrubs, vines, trees, and turfgrasses.
PT81 delivers targeted, efficient protection through species-specific application rates. This makes it an ideal choice for commercial growers and agricultural operations seeking reliable disease control.
Product Certifications
The Organic Materials Review Institute (OMRI) lists PT81 as compliant with certified organic farming standards, confirming it meets USDA organic guidelines. This listing gives growers and certifiers confidence in using PT81 for organic production.
PT81 complies with the USDA National Organic Program (NOP) as an OMRI-listed product, supporting organic farming practices while delivering effective disease control across a wide range of crops.
PT81 uses copper sulfate pentahydrate as its active ingredient, which the EPA (40 CFR § 180.1021(c)) and the Food and Agriculture Organization (FAO) exempt from tolerance requirements. Growers can safely apply it to crops before and after harvest without worrying about residues.
The Fungicide Resistance Action Committee (FRAC) classifies PT81 under Code M1 for its multi-site contact mode of action. Its low risk of resistance development makes it an ideal choice for rotation in spray programs, helping preserve the effectiveness of other fungicides.
How It Works
PT81 delivers bioactive mineral ions through a unique formulation that targets multiple sites within harmful microorganisms. Unlike single-site fungicides, this solution acts on multiple cellular targets. It affects the cell wall, membrane, DNA, RNA, and also triggers reactive oxygen species. These combined interactions result in irreversible damage and ultimately lead to the death of bacteria, fungi, and algae.
This broad-spectrum, multi-target approach is why PT81 is classified under FRAC Code M1, a group known for low resistance risk. PT81 is also effective against resistant bacterial strains. These include MRSA (Methicillin-resistant Staphylococcus aureus) and EMRSA (Epidemic MRSA).
Environmental Responsibility
Copper and other minerals are essential micronutrients for plant growth. However, traditional mineral-based fungicides often use excessive amounts, harming soil health and microbial life over time.
PT81 is different. It’s uniquely formulated with trace amounts of fully bioavailable copper ions. Only minute concentrations (in parts per million) are needed to control plant diseases effectively. This drastically reduces copper buildup in the environment while maintaining high efficacy.
As a result, PT81 offers a safer, more sustainable solution. It minimizes ecological impact while reliably protecting against bacteria, algae, and fungi. It’s an environmentally responsible, easy-to-use, and cost-effective choice for modern growers.
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