The experiment was carried out at the CIEFOR Puerto Almendra FCF - UNAP nursery, San Juan Bautista, Maynas, Loreto. Objective, to determine the increase in height and diameter; survival and quality of 200 seeds of Iryanthera tricornis Ducke in nursery with different substrates. The planting beds were prepared at ground level, with material from the area; The simple randomized experimental design with 2 factors was used, with 8 treatments and 25 repetitions. The greatest increase in height in the BII treatment (Black earth + chicken manure / Lighting at 60%) with 8.0 cm at the end of the experiment; while the greatest increase in the diameter of the seedlings was registered in the BII treatment (Black earth + chicken manure / Lighting at 60%) with 0.35 mm. The seedlings of Iryanthera tricornis Ducke "cumala colorada" registered results between 50% and 59% survival for treatments. The high...