5. Changes in bulk and surface properties of two biochar types during 12 months of field ageing in two West-African soils
Kofi Atiah, Edward Yeboah, Eric Nartey, D.Y.I. Lawson, Volker Häring, Andreas Buerkert, Bernd Marschner
West African Journal of Applied Ecology
Urban Farm DB summary
This study investigated the changes in properties of rice husk and corn cob biochars applied in urban agricultural field soils in Tamale, Ghana, and Ouagadougou, Burkina Faso, over 12 months. Biochars were buried at 20 cm depth, and evaluated based on soil management practices and time. No significant interaction effect was found between soil management practices and time, but time significantly affected most biochar ageing properties. In both biochars, ash content, fixed carbon, cDOC, hDOC, cSUVA, and hSUVA increased, while pH and volatile matter contents significantly decreased.