Rakesh Naik A.C. and Narayana J.
Abstract
Areca nut cultivation in Tarikere taluk, Chikmagalur district, Karnataka, generates substantial agricultural waste, primarily areca nut husk and leaf sheath. This study quantifies the waste output and assesses the economic and environmental potential of its valorization through composting, biogas generation, and fiber extraction. Data from 50 surveyed farms indicate a monthly generation of 22,500 kg of areca nut husk and 15,000 kg of areca leaf sheath, totaling 37,500 kg. Seasonal analysis reveals highest waste production post monsoon. Economic feasibility analysis demonstrates that all recycling methods are profitable, with plate manufacturing yielding the highest net profit of Rs. 8,000 per tonne of waste, followed by vermicomposting (Rs. 6,000) and biogas generation (Rs. 3,500). The estimated annual recoverable value from all waste components exceeds Rs. 10 lakh. Furthermore, waste utilization fosters environmental benefits by reducing methane emissions and air pollution, promoting soil health, and supporting a circular economy. Farmer surveys show a high willingness (76%) to adopt recycling technologies. This research underscores the significant opportunity for sustainable waste management, rural income diversification, and employment generation in areca-growing regions.