Growth Response and Production of Sabrang Onion (Eleutherine Bulbosa (L) Merr.) on Weeding and Biochar Application

Abstract

This research was conducted at the Faculty of Agriculture's Screen House, University of Sumatera Utara with an altitude of + 25 meters above sea level, from March to May 2018. The research used randomized block design (RBD) with 2 factors. Factor I was weeding with 3 different times, namely: P0: control (without weeding), P1: once every 7 days, P2: once every 14 days. Factor II was the provision of biochar with 3 levels, namely B0: 0 (without biochar), B1: 20 tons / ha = 1 kg / plot, B2: 40 tons / ha = 2 kg / plot. The results of statistical analysis showed that Sabrang onion plant growth significantly affected by the weeding treatment and biochar Application, i.e. leaf sprouting age and interaction of both significantly affected the leaf area and tuber fresh weight / plot. Weeding once in 14 days was the best treatment, while the treatment of 10 tons of biochar / ha application was the best treatment.