Am 120 Standard Mycorrhizal Inoculant

Joe Fertan — Fri, 04 Jul 2025 16:17:39 +0000

AM 120 Standard is a premium arbuscular mycorrhizal (AM) inoculant containing 100% Rhizophagus intraradices(formerly Glomus intraradices), delivering 300 propagules per gram. It’s designed to form a symbiotic relationship with plant roots—extending hyphae networks throughout the soil to enhance water, phosphorus, and micronutrient uptake, improve drought tolerance, and boost germination and biomass production .

Common applications include:

Native plant and ecological restoration – excellent for reforestation, slope stabilization.
Nursery/greenhouse seedling production – pre-colonize seedlings in trays or pots (e.g., 5 lb per yd³ medium).
Agriculture & row crops – side-dress seed furrows or transplant holes at 5–8 lb/acre (or per 30–40″ row); broadcast for cereals, legumes, and vegetables .
Turf, lawns, and hydroseeding – spread 1–2 lb per 1,000 ft² or 60 lb/acre; effective with native meadow or turf seeding .

Best Paired With

To maximize the benefits of AM 120:

Direct root contact
Apply at planting, mixing with seed, or placing around root balls to ensure spores touch roots—dry broadcasting alone limits effectiveness .
Low-to-moderate phosphorus soils
High phosphorus levels hinder colonization—avoid over-fertilizing before or during application.
Healthy organic soil or growing media
Use with good-quality potting mixes or tilled topsoil to support fungal establishment; avoid overly sterilized environments .
Complementary sustainable practices
Pair with minimal tillage, crop rotation, cover crops, and organic amendments to strengthen native soil microbial communities .

How It Works

Forms an extensive network of hyphae expanding the root’s reach far beyond its physical extent.
Enhances uptake of immobile nutrients like phosphorus, zinc, and copper; improves water access and drought resistance .
Stimulates soil structure and carbon sequestration, producing glomalin “soil glue” that enhances water retention and carbon storage .
Promotes plant growth, survival, and yield, especially in seedlings and stressed soils; USGS trials confirmed improved germination or biomass in over 70% of tested species .

Guide to Using AM 120

Application Situation	Rate & Application Method
Broadcast / Lawn & Seed	Spread 1–2 lb per 1,000 ft² (≈60 lb/acre); lightly incorporate or cover with mulch, then water .
Row crops / transplants	Side‑dress 5–8 lb/acre in seed furrow or transplant hole; cover with soil at 2–6″ depth .
Nursery media	Mix evenly at 5 lb per cubic yard (≈300 k propagules/yd³) .
Hydroseeding / restoration	Blend inoculum with seed and organic fertilizer in first slurry pass; mulch afterwards .
Established plants	Use root drench or soil injection (e.g., turkey baster) around drip zone—ensure contact, don’t rely on foliar use .

Best Practices

Timing: Apply at planting or transplanting for optimal colonization; inoculating established plants requires soil injection near roots.
One-time application: Once colonized, additional inoculation isn’t necessary unless soil is disturbed or sterilized.
Minimize phosphorus fertilizer: High phosphorus can suppress fungal establishment.
Keep spores viable: Avoid sunlight and store in a cool, dry place; handle with a dust mask when dry .

Why Choose AM 120 Standard?

Proven single‑species effectiveness across climates from Canada to Costa Rica .
High propagule density ensures robust colonization and quicker root‑fungi networks .
Versatility for ecological restoration, agriculture, turf, and nursery use.
Supports sustainable soil health—enhanced nutrient efficiency, water retention, carbon storage, and soil structure.

2.570000 – Nature's Seed