Nano Biochar Coating Methods of Urea Type to Increase the Growth and Yield of Shallot

Abstract

Abstract Shallots are an agricultural commodity with high economic value and demand in Indonesia. This study aims to determine the effectiveness of nano-biochar coating of several types of urea as nitrogen slow release to increase growth and yield of shallot in coastal sandy land. This research was conducted in the Agricultural Experiment Grenn House of the Muhammadiyah University of Yogyakarta from March to June 2022. This method was experimental research using a single-factor design arranged in a Completely Randomized Design (CRD); there were six treatments. Each treatment consisted of 6 plant samples with three replications, namely Urea Prill (A), Nano Biochar Coated Urea Prill (B), Urea Granules (C), Nano Biochar Coated Urea Granules (D), Urea Tablet (E), Nano Biochar Coated Urea Tablet (F). The results showed that the nano biochar coconut shell-coated urea prill effectively increases the growth and yield of shallots in coastal sandy land. In the future, nano biochar-coated urea prill can be applied to increase urea effectiveness and shallot yields.