| Summary: | This study investigated the effects of vermicompost fertilization with complementary microbial nutrition on the plant growth, yield, and fruit quality of the organically grown strawberry “Monterey” cultivar. Along with vermicompost, five different microbial fertilizers containing plant-growth-promoting rhizobacteria (PGPR) and arbuscular mycorrhizal fungi (AMF) were used as complementary nutrition. Here, we examined plant growth parameters, strawberry yield, fruit weight, pH, total soluble solids, and acidity in fruit and leaf mineral nutrient concentrations. Vermicompost-based fertilization with PGPR and AMF improved plant growth, yield, and fruit quality. The highest total yield (216.75 g per plant<sup>−1</sup>) and heaviest fruits with an average of 18.11 g were obtained from the vermicompost-based fertilization with PGPR containing complementary fertilization. This included <i>Bacillus amyloliquefaciens</i>, <i>Bacillus pumilus</i>, <i>Bacillus subtilis</i>, <i>Bacillus licheniformis</i>, <i>Bacillus megaterium</i>, <i>Trichoderma harzianum</i>, and <i>Trichoderma konigii.</i> This treatment also resulted in the best ratio of total soluble solids to acidity (18.74), pH (3.95), and mineral nutrient concentrations in leaves. The novel approach with vermicompost-based fertilization and complementary microbial nutrition improves organic strawberries’ growth, yield, and fruit quality. These results are promising for enhancing organic strawberry production.
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