Green Pepper Pot Trial: 147% Higher Yield in Poor, Unfertilized Soil with OMRI Listed Multi-Tricho

This pot trial set out to measure whether Multi-Tricho, an OMRI Listed multi-strain Trichoderma inoculant containing Trichoderma harzianum, Trichoderma longibrachiatum, and Trichoderma asperellum, could improve green pepper growth and yield in poor soil without any added fertilizer. Green pepper seeds were sown on April 10, 2020, in matched pots of 0.13 square meters each, and the trial ran through July 24, 2020. Multi-Tricho was spread evenly on the soil surface of the treated pots, watered in with 200 ml, and reapplied every month, while the control pots received the same watering with no inoculant. No fertilizer was applied to either group at any point, so the only difference between them was Multi-Tricho. Growth, root development, and final pepper yield per plant group were recorded from seeding through harvest.

The untreated control produced 63 grams of pepper per plant group at harvest, on soil described as fairly poor with no fertilizer added during the trial. In pot and container production, and on weak soils generally, the yield a plant can reach without supplemental fertility is the real test of whether the root zone is working. A control that returns only 63 grams under these conditions shows how much a poor, unfertilized medium limits a pepper crop before any biology is added.