
INSIGHTS
Proven to Increase Yield & Improve ROI
Since its inception, NewLeaf Symbiotics has partnered with a variety of contract research organizations, INTENT® FarmerTrials®, and worked directly with growers across the country to develop microbial inoculant ag biologicals that increase plant nutrient uptake, and improve abiotic stress tolerance for corn and soy. NewLeaf Symbiotics has also developed bioprotection pipeline products for corn rootworm.
Contact us to see how Terrasym can fit into your operation!


Comprehensive Performance Advantage - 3 Seasons of Trialing
Terrasym 401 Microbial Inoculant for Soybeans
+3.5 Bu/A advantage*
74 locations in 11 states, strip trials, large acreage split planter, large acreage side by sides, all application methods, aggregated by county
Terrasym 450 Microbial Inoculant for Corn
+6.6 Bu/A advantage*
124 locations in 9 states, strip trials, large acreage split planter, large acreage side by sides, aggregated by county
Beck's Hybrids Practical Farm Research Trial Results – 3 Seasons of Trialing
Terrasym 401 Microbial Inoculant for Soybeans under iron deficiency chlorosis (IDC)
+1.5 Bu/A advantage*
$12.71 net return per acre
1 location, strip trials
Terrasym 450 Microbial Inoculant for Corn
+3.8 Bu/A advantage*
$12.45 net return per acre
3, 4 and 5 locations (2020, 2021, 2022, respectively) in 6 states, strip trials
INTENT FarmerTrials® Results – 1 Season of Trialing
Terrasym 401 Microbial Inoculant for Soybeans
75% win-rate
+3.1 Bu/A advantage*
+9.6% Total root area
+5.7% Rooting depth
+19.4% Leaf tissue iron (Fe) concentrations (ppm)
+21.5% Leaf tissue iron (Mn) concentrations (ppm)
16 locations in 7 states, large acreage side by sides
Terrasym 450 Microbial Inoculant for Corn
80% win-rate
+7.1 Bu/A win advantage*
+6.2% Total root area
+9.0% Nodal root length
+17.5% Leaf tissue iron (Fe) concentrations (ppm)
+12.6% Leaf tissue manganese (Mn) concentrations (ppm)
20 locations in 7 states, large acreage side by sides
*advantage is average performance across all trials, win advantage is average performance when performance is positive
Click on the interactive map below to view yield results for our microbial inoculant.

Fill out and submit the form below to connect with one of our team members, or feel free to reach out to your regional representative directly.

NewLeaf Symbiotics Product Overview
SEED TREATMENT
IN-FURROW
PIPELINE TREATMENT
See how you can try Terrasym risk-free with our satisfaction promise.

Yield Success Stories
TERRASYM FOR SOYBEANS
Terrasym 401
“When I think of Terrasym, I think of all the science behind it. Everything at NewLeaf Symbiotics is PhD-driven. They’re actually creating a product – and constantly working to better it.”
—Matt S.;
Lake Mills., IA
TERRASYM FOR CORN
Terrasym 450
“My farm is poorly drained and has wet soil, so we chose to use Terrasym 450 to help improve our yields. We've collected the last five years worth of yield data. After using Terrasym, we beat it by 10 bushels. But we did make one mistake: We didn't do the whole thing. We should've used both sides of the planter.”
—Steve J.;
Ames, IA
TERRASYM FOR CORN
Terrasym 450
“Looking at the field, you didn't see it going across the field or anything. But once you were in the combine through it, it was night and day difference. You can see the striping in the satellite imagery of the treated versus non-treated.”
-John Y.;
Marshall, IL
* Source: 2020 IN10T FarmerTrials® data. Performance may vary from location to location and from year to year as local soil, climate, and/or other conditions change. Always read and follow label directions. Check state registration to make sure product is registered in your state. NewLeaf Symbiotics® and Terrasym® are both registered trademarks.