The presented study determined the effects of shallot cultivars and levels of horse manure vermicompost on its growth and production traits. The developed shallot cultivars came from true seeds. The research materialized from June to October 2022 at the Agricultural Technology Research and Development Institute (IP2TP) in Kelara District, Jeneponto Regency, South Sulawesi, Indonesia. This study employed a factorial design with two factors and three replications. The first factor included four doses of vermicompost: 0, 5, 10, and 15 t ha^-1. The second factor consisted of three shallot cultivars (Lokananta, Maserati, and Sanren-F1). The results revealed that the shallot cultivar Sanren-F1 recorded the highest average plant height, bulb weight, diameter, and yield. The horse manure vermicompost treatment with the 15 t ha^-1 dose also emerged with the maximum average plant height, number of leaves, bulb weight, and bulb diameter over other applications. However, the horse manure vermicompost (10 t ha^-1) gave the foremost bulb yield.

Keywords: Growth, horse manure vermicompost, shallot cultivars, seed, variety, yield

Key findings: Three shallot cultivars responded differently to the horse manure vermicompost applications. However, the genotype Sanren-F1 generally has the best growth and production. The single application of horse vermicompost (10 t ha^-1) increased the shallot production without using inorganic fertilizers.