What Are Biological Fertilizers? A Farmer's Complete Guide
Learn how biological fertilizers differ from synthetic inputs, how enzyme products work in soil, and why leading operations are adding biologicals to their programs.

Free Resources for Working Farmers
Expert guides on biological farming, soil health, and AgConcepts products — written for working farmers, not marketing departments.
17 guides available
Learn how biological fertilizers differ from synthetic inputs, how enzyme products work in soil, and why leading operations are adding biologicals to their programs.
A deep dive into humic acid chemistry, its leonardite source, how it improves CEC and nutrient uptake, and practical application rates for row crops.
Understand the soil food web, why microorganisms are essential, how to identify degraded soil, and practical steps to rebuild biological activity.
An honest side-by-side comparison of biological and synthetic fertilizers — cost per acre, yield data, long-term effects, and how leading operations combine both.
Market trends, regulatory shifts, and the economic drivers behind the rapid adoption of biological inputs across American agriculture.
Everything you need to know about applying liquid biological fertilizers — ground rigs, aerial, irrigation injection, and in-furrow — with specific guidance for AgConcepts products.
Everything you need to know about IBC totes for farm liquid storage — size differences, pump systems, handling, and cost per gallon calculations.
Drum specs, pump selection, storage best practices, cost per gallon comparisons, and acreage coverage calculations for 55-gallon drum purchasing.
Quick-reference application rates for all AgConcepts products — ZyDrive, PervaideMax, Enhance, and ProMax — by crop and growth stage.
A practical guide for row crop farmers on interpreting soil test reports — pH, CEC, phosphorus, potassium, organic matter, and how biological inputs address the most common deficiencies.
Month-by-month application timing for AgConcepts biological products across major US crop regions — from pre-plant through harvest for corn, soybeans, wheat, and specialty crops.
A complete guide to diagnosing and addressing soil compaction — causes, penetrometer readings, tillage options, biological inputs like PervaideMax, and long-term prevention strategies for row crop farmers.
Federal and state programs that pay farmers to adopt biological soil health practices — EQIP, CSP, RCPP, and Section 179 deductions for biological inputs.
How biological inputs help conventional farms maintain yields during the 3-year USDA organic certification transition period. What's approved, what's not, and how to plan.
A farmer-focused summary of peer-reviewed research on biological fertilizer performance from Iowa State, University of Illinois, USDA-ARS, and other land-grant universities.
Everything you need to know about buying liquid humic acid in bulk — comparing concentration levels, drum vs. tote economics, freight costs, and what to look for in a quality product.
A compilation of independent university and third-party trial results for ZyDrive, Enhance, and other AgConcepts biological products — with methodology notes and farmer trial summaries.
Stay in the Loop
We publish new guides on biological farming, application timing, and product updates. Subscribe and we'll send them straight to you.
Unsubscribe anytime.
Shop AgConcepts products in drum and tote quantities — with fast shipping and expert support.