Biochar from palm fruit bunch waste for enhanced legume crop production

Overview

This research initiative explores the use of biochar derived from empty palm fruit bunches (EFB) as a soil amendment to enhance soil health and increase yields of leguminous crops such as soybean and cowpea. Empty palm fruit bunches are an abundant agricultural waste product from oil palm processing in Ghana, often discarded and sometimes creating environmental challenges. By converting this waste into biochar, the project aims to improve soil moisture conservation, enhance carbon storage, and promote soil health. The addition of microbial inoculants (rhizobia) is expected to create synergistic effects on legume yields, supporting both crop diversification and improved food security for smallholder farmers.

Technical specifications

Key research components:

• Biochar production: Biochar will be produced at the University of Ghana from locally sourced empty palm fruit bunches, converting a waste product into a valuable soil amendment
• Soil health assessment: Evaluation of treatment effects on soil moisture, carbon content, and overall soil quality index as a measure of soil health
• Microbial inoculation: Rhizobia inoculants will be sourced and combined with biochar application to assess synergistic effects on legume performance
• Crop focus: Primary focus on soybean as the main legume crop, with potential extension to cowpea
• Field validation approach: Smallholder farm trials across approximately 10 farms using a researcher-farmer managed approach over three growing seasons
• Geographic context: Conducted in the Eastern region of Ghana where oil palm is a major crop but legume cultivation is limited, enabling assessment of diversification potential

Technology readiness level

This hypothesis has not yet been validated. The project is at the early conceptual stage with a clear plan for future validation through on-farm trials. The research will be conducted at the University of Ghana's Forest and Horticultural Crops Research Center, which is strategically located in Ghana's oil palm growing region. The planned three-season field trials on smallholder farms will provide initial evidence of biochar's effectiveness for legume production. The approach combines locally available waste materials with established soil science methodology, offering a practical pathway to validate the technology under real-world farming conditions.