Acidic Soil Remediation Applied with Coffea Lignum Carbo as Soil Amendment

The study was conducted at Cagayan State University, Sta. Maria, Lal-lo Cagayan, Philippines from March 28 to April 18, 2024. Generally, the study was conducted to determine the remediation mechanism of coffea lignum carbo (CLC) in acidic soils. Specifically, the study aimed to assess the effects of coffea lignum carbo (CLC) application on the physical (bulk density, color, and soil texture) and chemical (potential hydrogen, organic matter, phosphorus, potassium, zinc, copper, manganese, and iron) properties of acidic soil and to determine the chemical properties of the coffea lignum carbo. The Completely Randomized Design (CRD) was used in the study. Ninety-six (96) polyethylene bags weighing 1 kg of soil were used in the four (4) treatments with three (3) replications. Soil media packed in the polyethylene bags correspond to one (1) replicate. The treatments used in the study were as follows: Treatment 1 (Lime), Treatment 2 (30grams of CLC), Treatment 3 (50grams of CLC), and Treatment 4 (70grams of CLC). Result revealed that T4 (70 grams of CLC) is the most effective application rate of coffea lignum carbo, therefore, it is recommended as an effective soil amendment to improve physical and chemical properties of soil. Likewise, the result of the study will be useful to the following; a) to researchers, use as baseline data to the improvement of future studies related to coffea lignum carbo and create new technology to address soil acidity with the use of coffea lignum carbo; b) to students, use as their basis in conducting another set of research to study other parameters that are not included in the current study; c) to organic practitioners, the CLC will be used as additional/alternative substrate in making organic fertilizer; and d) to farmers, the use of coffea lignum carbo will address their problem on soil acidity to improve their crops’ agronomic characteristics.