Working in coffee on acidic (pH 4.5-5.5) and weathered (CEC 2-7 cmolc kg-1) tropical soils in the Brazil, Zambia and Tanzania, we would like to convert dried post-harvest residues (pulp, husks) to biochar and then apply it back in the field. However, these are perennial systems with shallow rooting systems and tillage or ripping for getting biochar in the soil is not advised once the crop is planted. Is biochar still beneficial and if so, what would be the best mode and rate of application?
Maybe you could contribute to science with this experiment. Replacing fertilizer and/or limestone biochar works. The main issue to apply on the soil surface is the erosion (water and wind) and losing the biochar from the production site. The available literature about the application is abundant.
http://www.mdpi.com/2071-1050/7/12/15842/htm
yes, it does. as shown by: Dr Kawsar Ali (Effect of biochar, FYM and mineral nitrogen alone and in combination on yield and yield components of maize.... his profile: https://www.researchgate.net/profile/Kawsar_Ali2
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