Marrone Bio Innovations Regalia – 1 Gallon

Marrone Bio Innovations Regalia is a 1-gallon biofungicide concentrate that works by activating the plant’s natural immune response — a mechanism called induced systemic resistance — to defend against fungal and bacterial diseases before they can establish. It is designed for preventative use and early disease control in specialty crops, helping growers protect yield quality and reduce crop losses without relying solely on conventional chemistry.

Regalia Biofungicide Specifications

Regalia is a liquid concentrate biofungicide derived from Reynoutria sachalinensis (giant knotweed) plant extract. The active ingredient triggers the plant’s own defense signaling pathways rather than directly attacking the pathogen, making it suited for integration into preventative spray programs. Below are the key product specifications based on manufacturer documentation and distributor catalog data.

Why Choose Regalia Biofungicide

Regalia occupies a distinct position in disease management programs because it does not target the pathogen directly. Instead, it primes the plant’s own defense mechanisms, which means resistance is not built up in the pathogen population over repeated applications the way it can be with conventional single-site fungicides.

• Activates plant-based defense before infection: Regalia stimulates induced systemic resistance, preparing the plant to respond faster and more effectively when disease pressure arrives. Applied preventatively, it builds a defense window during critical growth stages.
• Reduces yield loss from yield-robbing diseases: The canonical description notes that Regalia offers preventative activity and early control of yield-robbing diseases, translating to increased marketable yield at harvest.
• Suited for specialty crop programs: Regalia is specifically recommended for use in specialty crops — fruit, vegetable, and ornamental categories where harvest quality and market-grade yield matter most.
• Biological active ingredient: Derived from Reynoutria sachalinensis plant extract, Regalia fits into biological or reduced-chemistry programs, including those targeting certified organic production (verify current label for applicable registrations before use).
• 1-gallon size for commercial-scale use: The 128 fl oz format provides enough concentrate for coverage across larger operations compared to smaller retail pack sizes, reducing per-acre product cost relative to quart or pint sizes.

Best Uses for Regalia

Regalia is designed to be used preventatively as part of a broader integrated pest and disease management (IPDM) program. Because it works by priming plant defenses rather than eradicating active infections, timing in relation to expected disease pressure is key. The following uses are consistent with the product’s stated positioning as a biofungicide for specialty crops.

• Preventative foliar disease programs: Apply before disease onset — at transplant, canopy closure, or other high-risk windows — to establish a protective ISR state in plant tissue before pathogen pressure increases.
• Early-season disease suppression in vegetables: Regalia’s early curative activity makes it useful at the first signs of disease in crops like tomatoes, peppers, cucumbers, and leafy greens, where early intervention preserves marketable yield most effectively.
• Fruit crop protection: Fruit trees and berry crops with extended seasons benefit from repeated preventative applications through bloom, fruit set, and development — the periods when disease losses have the highest economic impact.
• Rotation partner with conventional fungicides: Because Regalia’s mode of action differs from conventional fungicides, it is commonly used in spray rotation programs to reduce selection pressure and resistance development in pathogen populations.
• Use alongside other biological additives: Growers building biological programs can combine Regalia with products like microbial inoculants or broad-spectrum biological sprays — always check label compatibility before tank-mixing.
• Indoor and greenhouse specialty crops: Controlled-environment growers running high-density canopies or recirculating systems, where fungal pressure from humidity accumulates, can use Regalia as a preventative layer in their disease management stack.

Sources & Further Reading