Abstract

• some plant materials. Baw-za-gaing ((Lam.) De Wit), Kathit-su (Wall), Htiyo-wa ( (Kurz ex Munro) Gamble), Pan-mezali ( (DC.) Back. ex K.), and rice husk (L.) were collected for preparation of biochars. Different amounts of biochar were 18.75 % from Baw-za-gaing, 10.0% from Kathit-su, 19.04% from Htiyowa, 10.0 % from Pan-mezali and10.0 % from rice husk. In the biochar preparation process, the effectiveness of TLUD (Top-Lit UpDraft) furnace was studied by using various chimney height (1-3). The highest yield % of biochar from different plant materials was acquired with the chimney height in the range of 1 6 - 2 6. Among the five different samples, Htiyo-wa gave the highest yield % of biochar (19.04 %). Furthermore, ash content (1.2 % from baw-za-gaing, 0.13 % from htiyo-wa, 0.2 %,from kathit-su, 0.18 % from pan –mezali, and 0.62 % from rice husk), moisture content (2.65 % from baw-za-gaing, 1.75 % from htiyo-wa,2.32 % from kathit-su, 0.18 % from pan-mezali, and 3.251 % from rice husk), and bulk density (84.78 g/100 mL from baw-za-gaing, 79.12 g/100 mL from kathit-su, 82.21 g/100 mL from pan-mezali, 80.12 g/100 mL from rice husk, and 75.12 g/100 mL from htiyo-wa) were also determined in the laboratory.Similarily, the volatile matter contents of biochars were determined 2.12%, 2.00%, 2.10 %, 2.50%, and 2.15%, respectively, from Pan-mezali, Baw-za-gaing, Htiyo-wa, Kathit-su, and Rice- husk .The fixed carbon contents were 95.775 % from Baw-zagaing, 98.72 % from Htiyo-wa, 97.23 % from Kathit-su, 97.718 % from Pan-mezali, and 96.015 % from Rice Husk.Nitrogen content (3.1% from baw-za-gaing, 2.5 % from kathit-su, 3.0 % from pan-mezali, 2.1 % from rice husk, and 2.4 % from htiyo-wa), potassium content (0.1814 % from baw-za-gaing, 0.8459 % from kathit-su, 0.8457 % from pan-mezali, 0.8471 % from rice husk, and 1.802 % from htiyo-wa) and phosphorous contents (0.032% from baw-za-gaing, 0.023 % from kathit-su, 0.026 % from pan-mezali, 0.018 % from rice husk, and 0.027 % from htiyo-wa) were observed in biochar, which can be used as soil amendment for plant growth.