The objective of this study was to reduce the use of synthetic fertilizers on shallot production by application of vermicompost and mycorrhiza. The study was arranged by using a factorial Randomized Completely Block Design. The factors of vermicompost dose viz. 0, 20 and 40 t ha-1, the dose of mycorrhiza viz. 0, 10, and 20 g plant-1 and the dose of synthetic fertilizer based on recommendation dose viz. 100% (138 kg N ha-1, 72 kg P2O5 ha-1 180 kg K2O ha-1), 75% (103 kg N ha-1, 54 kg P2O5 ha-1, 135 kg K2O ha-1) and 50% (69 kg N ha-1, 36 kg P2O5 ha-1, 90 kg K2O ha-1) were tested. The variables observed included the number of bulbs, fresh weight of bulbs and bulbs diameter. All variables were observed at harvest time. The use of 50% synthetic fertilizer along with 40 t ha-1 of vermicompost and 20 g plant-1 of mycorrhiza gained equal number of bulbs, fresh weight of bulbs and diameter of shallot bulbs compared to application of 100% synthetic fertilizer only. Therefore, the reduction of 50% synthetic fertilizer with application of vermicompost and mycorrhiza could support sustainable of agriculture on the production of shallot.
mycorrhiza; shallot; synthetic fertilizer; vermicompost
Purnawanto, A.M., Ma’ruf, A., Ahadiyat, Y.R. (2025): Improving Shallot Yield Performace through Applications of Vermicompost and Mycorrhiza with Low Doses of Synthetic Fertilizer. Scientia Agriculturae Bohemica, 56, 1, 3, DOI: 10.7160/sab.2025.560103