Agronomic Potential of Avocado-Seed Biochar in Comparison with Other Locally Available Biochar Types: A First-Hand Report from Ethiopia

Biochar is a promising option for improving soil fertility and agricultural productivity. The potential of biochar specific purposes depends on its physical chemical characteristics. avocado seed widely available as leftover after the fleshy part used food byproduct avocado-oil producing agro-industries in Ethiopia. Its an agronomic purpose has not been studied. objective this study was to compare avocado-seed (ASB) type comparison other types produced from locally feedstocks at two selected pyrolysis temperatures (450 550°C). It identified that mass-base, yields were range 29.68 47.45%, higher ASB pyrolyzed 450°C. scanned images showed remarkable surface morphology bamboo (BB) ASB. bulk density biochars 0.21 0.49 g/mL. highest volatile matter measured BB-450°C, fixed carbon BB-550°C, ash content BB-450°C. mean pH values 9.1 11.3. ASB-450 550°C exhibited nutrient content. cation exchange capacity (CEC) recorded ASB-450°C; organic (OC) corncob (CCB) followed by 550°C. calcium carbonate (CaCO3) ASB-550°C second-highest value next coffee husk (CHB). In study, BB found have important qualities degraded soils terms acidity, content, fertility. Therefore, ASB-450°C BB-450°C can be suggested candidates reclaiming acid-soils nutrient-depleted infertile into agriculturally productive soils.