Effect of organic residue and inorganic fertiliser phosphorus on phosphorus transformations and utilisation by upland rice Centuries Old Addressing Challenged in the BVI Beyond Books, Beyond Demonstrations: Using Real Experiments to Teach Elementary Science Decomposition and phosphorus release from organic residues as affected by residue quality and added inorganic phosphorus The use of Sesbania (Sesbania rostrata) and urea in lowland rice production in Sierra Leone Ameliorating acid infertile rice soil with organic residue from nitrogen fixing trees Electrical and optical response of a Mach-Zehnder electrooptical modulator to pulsed irradiation A simple active auxiliary commutation circuit for three-level inverters Utilisation by upland rice of plant residue- and fertiliser-phosphorus in two tropical acid soils Genotypic response to aluminum toxicity of some rice.