Biochar-based organic substrates enhance tomato growth by promoting specific microbial communities in rooftop farming
Miguel de Celis, Laura L. de Sosa, Giuseppe Picca, Noelia González‐Polo, Cristina Gómez Ruano, Luciano Beneduce, Claudio Zaccone, Marco Panettieri
Environmental Microbiome
Urban Farm DB summary
The influence of different organic substrates on tomato growth and its associated microbial community was studied in an open-air rooftop farming setup. Combinations of peat with compost derived from seaweed biomass or coffee byproducts (50% of volume), and how biochar-blending altered these compositions, were evaluated. Substrate properties were mainly defined by the compost feedstocks, and biochar blending had a minor influence on substrate composition, though it enhanced tomato yield. Compost feedstock had a greater impact on microbial communities, and the abundance of bacteria and fungi associated with composted seaweed biomass was positively associated with tomato yield.