Rice-husk biochar effects on organic carbon, aggregate stability and nitrogen-fertility of coarse-textured Ultisols evaluated using Celosia argentea growth von Ebido, Nancy E., Edeh, Ifeoma G., Unagwu, Benedict O., Nnadi, Adaobi L., Ozongwu, Ogorchukwu V., Obalum, Sunday Ewele, Igwe, Charles A.

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