Soil Conditioners and Phosphorus Management in Agriculture

Phosphorus deficiency is a major constraint to crop production in highly weathered tropical acid soils, where fixation by aluminium and iron oxides limits phosphorus availability to plants. This book presents pioneering research from Universiti Putra Malaysia on transforming two agro-industrial by-products, charcoal and sago (Metroxylon sagu) bark ash, into effective soil amendments to enhance phosphorus availability and fertility. Through incubation, leaching, pot, buffering capacity, and sorption studies, the findings reveal the synergistic effects of these materials in improving nutrient dynamics, reducing phosphorus fixation, and promoting sustainable nutrient management in acid soils. Blending scientific rigor with environmental innovation, this study demonstrates how local waste can be converted into a valuable resource, offering a sustainable, science-based pathway to improve soil health, increase crop yields, and support circular economy practices in tropical agriculture.