The Effect of an Engineered Biostimulant Derived from Ascophyllum nodosum on Grass Yield under a Reduced Nitrogen Regime in an Agronomic Setting

Nitrogen (N) is the most important macronutrient used in modern agricultural systems to enhance crop yields; however, a significant amount of applied N not taken up by and lost environment. Improving nitrogen use efficiency (NUE) crops can curb these environmental losses while concurrently delivering economic gains. Plant biostimulants have potential improve NUE agronomic settings. In this research, granular N-containing fertilizer coated with biostimulant PSI-362, an extract from brown seaweed Ascophyllum nodosum, was grass managed under different production assess its impact on NUE. The role soil type, pH, phosphorus (P) potassium (K) efficacy improving assessed using lysimeters filled six soils. A increase yield (29%) found PSI-362 addition at 75% rate over control (8478 kg dry matter (DM) ha?1 vs. 6772 DM ha?1) two years trials simulated grazing platform rotations. increased 96.6% for PSI-362-treated compared 82.8% controls. Field-based evaluations demonstrated no decrease quality harvested grazed treated when reduced 20 25%. Based results, application allows reduction input 25% without or quality.