Optimizing Soilless Media for Superior Microgreen Production and Sensory Acceptance

Abstract

Microgreens, the young and nutrient-dense shoots of vegetables and herbs, represent a remarkable innovation in both agriculture and culinary arts. This study investigates the optimal growing media for microgreens of Red Amaranthus, Fenugreek, and Spinach by comparing cocopeat and cocopeat + vermicompost mixtures. The growth performance, including plant height and yield, was assessed at intervals of 5, 10, and 15 days. Red Amaranthus microgreens showed significantly higher growth in cocopeat-vermicompost (6.66 cm on the 15th day) compared to cocopeat alone (5.03 cm). Similar trends were observed in Fenugreek and Spinach, with the cocopeat-vermicompost mix enhancing both fresh and dried weights. For instance, Fenugreek grown in the mix had a fresh weight of 203.66 g versus 141.33 g in cocopeat. Spinach microgreens followed the same pattern, showing improved growth metrics. The study highlights the superior growth and yield of microgreens in cocopeat-vermicompost due to enhanced nutrient availability. Sensory evaluation by a panel of 99 participants revealed diverse flavor profiles, with Red Amaranthus exhibiting balanced grassy notes and Fenugreek having a strong, intense flavor. Spinach microgreens were milder, making them more palatable to a wider audience. These findings suggest that incorporating vermicompost into the growing medium significantly improves microgreen production and consumer acceptability.