The Increase of Organic Shallots (Allium cepa var ascalonicum L.) Production through the Application of Compost on Inceptisol Soils

Abstract

This study was conducted at the Experimental Garden of the Faculty of Agriculture, Islamic University of North Sumatra, Jalan Karya Wisata, Gedung Johor Village, Medan Johor Sub-district, Medan City, North Sumatra Province at an altitude of ± 25 meters above sea level, with Inceptisol soil type. This study was conducted from March 2021 to May 2021. This study aims to determine the compost type that could increase the production of shallots (Allium cepa var ascalonicum L.) in Inceptisol soil. The study used a non-factorial Randomized Block Design (RAK) with 5 treatments, namely compost type with five replications (25 experimental plots), including P1 = Liquid Organic Pineapple Fertilizer of 4.5 ml/liter of water/polybag, P2 = straw compost of 20 tons/ha (1 kg/polybag), P3 = rice husk charcoal compost of 10 tons/ha (1.5 kg/polybag), P4 = market waste compost of 10 tons/ha (2 kg/polybag), P5 = market waste compost enriched with trichoderma of 10 tons/ha (2 kg/polybag). Parameters observed were the number of tubers per plant, the number of tubers per plot, the weight of the tubers per plant, the weight of the tubers per plot, and the size of the tubers. The results show that the type of compost treatment had a significant effect on the production of shallots. Market waste compost enriched with trichoderma (P5) resulted in the highest production.