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Mycorrhizae is an endomycorrhizal inoculant, an arbuscular mycorrhizal fungi (AMF) biofertilizer built on two named species: Rhizophagus irregularis (formerly Glomus irregularis) and Funneliformis mosseae (formerly Glomus mosseae), at 6,000 live propagules per gram.
The fungi colonize the root from the inside and push hyphae out into soil the root will never reach. Phosphorus hardly moves in soil, so a root hair empties the ground around it and then sits in a depletion zone. Hyphae are much finer and extend centimeters past it, which is how a colonized crop collects phosphorus, zinc and water that an uncolonized one leaves in the ground.
Key points:
One honest caveat before you buy: soil phosphorus above about 100 ppm suppresses colonization, so check a soil test first. The full explanation is below.
Bio-Green Mycorrhizae is an arbuscular mycorrhizal (AMF) inoculant built on two species, Rhizophagus irregularis and Funneliformis mosseae, delivered at 6,000 live propagules per gram on a maltodextrin carrier. The fungi colonize crop roots and grow hyphae out into soil the roots will never reach, which is where the phosphorus, zinc and water the plant cannot get to on its own actually sit.
It is made in Wisconsin and sold in bulk, wholesale, OEM and private-label formats. This page covers what is in it, what it does, where it works, where it does not, and how to apply it.
Most inoculant labels say "multi-strain" and stop there. Here are the two species and both names each one goes by, because the older names are still what most soil labs and a lot of published research use.
Pairing them is deliberate. The two peak under different soil conditions, so a blend colonizes more reliably across a mixed operation than either alone. If a supplier will not name the species in the bag, you cannot compare their product to anything, and you cannot look up the research.
Endomycorrhizae, also called arbuscular mycorrhizae or AMF, grow inside root cells and build branching exchange structures called arbuscules. Ectomycorrhizae wrap the outside of the root instead and partner mainly with forest trees such as pine, oak, birch and beech.
About 80 percent of land plant species form mycorrhizal associations, and the arbuscular type is by far the most common. That includes almost everything grown as a crop. Mycorrhizae is an endomycorrhizal product. If you are inoculating conifer seedlings or a forestry nursery you want an ectomycorrhizal product instead, and this is not it.
Phosphorus barely moves in soil. A root hair strips the phosphorus out of the few millimeters around it within days and then sits in a depletion zone it cannot grow out of fast enough. Mycorrhizal hyphae are far finer than root hairs and extend centimeters past that zone, so they reach phosphorus the root has already given up on.
That is the argument on a fertilizer bill. You are not adding phosphorus, you are collecting more of what you already applied.
This is the single most common reason an inoculant does nothing, and most suppliers will not put it on the page. Soil phosphorus above about 100 ppm suppresses colonization. The relationship is plant behavior, not a product defect: when phosphorus is freely available the plant stops spending sugar on a fungal partner it does not need, and colonization drops off.
What that means in practice:
We would rather tell you the product will not help than sell you a pail that does nothing.
Colonization changes how the root system is built, not just what it absorbs. Arbuscules formed inside the cortex create the exchange surface, and fine-root branching and elongation both increase.
Hyphae enter soil pores that root hairs are too coarse to reach, so a colonized plant draws on water a non-colonized plant cannot get to. The effect is slower onset of stress, not immunity to it.
AMF release glomalin, a sticky glycoprotein that binds soil particles into stable aggregates. Hyphae themselves physically bind soil as they grow. Together that improves the physical soil, which is the part that takes years to build and minutes to destroy.
Colonized plants hold nutrient balance better under abiotic stress. The mechanism is mostly nutritional: a plant that is not short of phosphorus has the energy to manage salt and to keep growing through compaction and heat.
Being straight about this is more useful than a list of every crop on earth.
This is contact-driven. Propagules have to physically meet a developing root, so placement matters more than volume.
This product is not registered for pesticidal use with the U.S. Environmental Protection Agency. It is a soil amendment and microbial inoculant, and we make no disease or pest control claims for it.
Three different biologies that get confused with each other constantly.
They are compatible and are often used together. Mycorrhizae goes on or near the seed, the other two go broadcast or in the furrow.
Mycorrhizae is manufactured in the United States and supplied direct, without a distributor markup in between.
Send us your crop, acreage and a recent soil phosphorus number and we will tell you honestly whether inoculation is worth it on those fields.
Species (endomycorrhizal / AMF):
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It depends on one number. On soils with low or locked-up phosphorus, inoculation improves phosphorus and water uptake and usually pays. On soils already testing above about 100 ppm phosphorus, the plant will not maintain the partnership and you will see little. Pull a soil test before buying.
At planting, before or during root development. Propagules have to physically contact a developing root, so seed treatment, in-furrow placement or a transplant drench all work. Applying to an established root system late in the season achieves very little.
Brassicas (canola, broccoli, cabbage, kale, mustard) and chenopods (sugar beet, table beet, spinach, quinoa) form few or no arbuscular mycorrhizae. Lupins and most Proteaceae are also poor hosts. Inoculating those crops is not worth the money, and we would rather say so.
Three real ones. High soil phosphorus suppresses colonization. Some crop families barely respond. And fungicides reduce viability, so it cannot be tank-mixed with them. Outside those cases the risk is low, since it is a soil amendment and not a pesticide.
A soil inoculant that introduces arbuscular mycorrhizal fungi, which grow inside root cells and form exchange structures called arbuscules. Bio-Green Mycorrhizae supplies Rhizophagus irregularis and Funneliformis mosseae at 6,000 propagules per gram on a maltodextrin carrier.
Endomycorrhizae (arbuscular, AMF) grow inside root cells and partner with almost all crop plants. Ectomycorrhizae sheathe the outside of roots and partner mainly with forest trees such as pine and oak. Mycorrhizae is an endomycorrhizal product, so it is not the right choice for conifer nurseries.
The most widely studied arbuscular mycorrhizal species in agriculture, and the backbone of most commercial inoculants. It colonizes quickly and associates with a very broad range of host crops. It is one of the two species in Bio-Green Mycorrhizae.
Yes. Glomus irregularis is the older name for the same species; the genus was reclassified as Rhizophagus. Soil labs and older research papers often still use the Glomus name, so you will see both.
An arbuscular mycorrhizal species formerly called Glomus mosseae. It tolerates higher pH and calcareous soils and performs well in cooler soils where colonization is otherwise slow. It is paired with Rhizophagus irregularis in Bio-Green Mycorrhizae.
Phosphorus barely moves in soil, so roots quickly exhaust the few millimeters around them. Mycorrhizal hyphae are far finer than root hairs and reach centimeters beyond that depletion zone, accessing both inorganic and organic phosphorus and raising the efficiency of what you already applied.
The most common cause is soil phosphorus above about 100 ppm, which tells the plant it does not need a fungal partner. Other causes are dry soil in the first two weeks, a fungicide in the tank, a non-host crop, or product that never contacted a root.
Field and row crops use 150 g per acre (375 g per hectare) as a seed treatment or in-furrow. Root, legume and specialty crops use 400 g per acre (1 kg per hectare). Transplant dips and localized drenches run 5 to 10 g per liter of water.
Mix the powder with a small volume of water or a sticking agent such as molasses, humic acid or a compatible polymer binder, coat the seed evenly, and plant shortly after it dries. Rate is 150 g per acre. Apply immediately before planting to protect viability.
Colonization typically begins within 2 to 3 weeks under favorable soil temperature and moisture, and builds through the season. Keeping soil moist for the first 1 to 2 weeks matters, because spores germinating into dry soil die before they find a root.
Yes, with most fertilizers and biological inputs at moderate pH and salinity. The exception is high-analysis starter phosphorus during establishment, which suppresses colonization. Keep soil phosphorus below about 100 ppm in the first few weeks.
No. AMF are fungi, and systemic fungicides in particular reduce viability. Do not tank-mix. If a fungicide is part of the program, separate the applications and place the inoculant in direct contact with the seed or root.
Propagule count is the honest way to compare products, but only when the species are named too. Bio-Green Mycorrhizae is 6,000 propagules per gram, counting spores, hyphal fragments and colonized root pieces. Custom concentrations are available on request.
Cool, dry and out of direct sunlight, resealed after each use. Shelf life is 24 months at room temperature from the date of manufacture. Avoid prolonged heat and humidity, which reduce fungal viability.
Direct from Bio-Green Planet in the United States. It ships in 11 lb (5 kg) and 22 lb (10 kg) pails and 185 lb (85 kg) drums, domestically and internationally, and is not regulated for transport under DOT, IMDG or IATA. Use the form on this page for a quote or a sample.
Yes. Bio-Green Mycorrhizae is offered in wholesale, distributor, OEM and private-label formats for agricultural input companies and blenders, including custom propagule counts and pack sizes.
