Isimikalu TO, Olaniyan JO, Affinnih KO, et al. Rice husk biochar and inorganic fertilizer amendment combination improved the yield of upland rice in typical soils of Southern Guinea Savannah of Nigeria. Int. J. Recycl. Org. Waste Agric. 2023;12(3). doi:10.30486/ijrowa.2022.1951012.1409