In the tropics, warm temperatures and high rainfall contribute to acidic soil formation
because of the significant leaching of base cations (K+, Ca2+, Mg2+, and Na+), followed by …

Acidic cations such as Al, Fe, and Mn tend to fix P in soils, and this reaction make P
unavailable for plant uptake. Several conventional strategies for farmers had been proposed …

Understanding organic matter (OM) in cave mineral deposits (speleothems) is essential for
interpreting land use and climatic changes, and the incorporation of trace elements …

The waste of areca nuts skin and sago bark are alternatives of ameliorant material that can
be used to support soil quality improvement. This research aims to study the potential of …

Applying inorganic phosphorus fertilizer is less effective in increasing crop yields in tropical
soils due to precipitation and adsorption reactions. However, research suggests that partial …

Potassium (K) is a macronutrient required by plants for energy production, enzyme
activation, formation of cell wall, production of protein, and photosynthesis. However, its …

Black soldier fly larvae (BSFL) were used in this study as decomposer agents to ingest
decanter cake (DC) and palm kernel expeller (PKE) mixture into frass (larvae excretion). The …

In the tropics, warm temperatures and high rainfall contribute to acidic soil formation
because of the significant leaching of base cations (K+, Ca2+, Mg2+, and Na+), followed by …

Intensive agricultural land with a limiting factor of acidity often has a great degree of
phosphate elements but is not accessible to plants. The utilization of bio-phosphate fertilizer …