Impact of Biochar Application on Andosol Soil pH and Electrical Conductivity Under Avena sativa Cultivation

抄録

Biochar, a carbon-rich material derived from the pyrolysis of organic matter, has emerged as a promising soil amendment for enhancing soil properties. It has been shown to increase soil pH, boost microbial activity, improve nutrient retention, and enhance water-holding capacity. When applied to acidic soils, biochar neutralizes the pH and improves nutrient availability, creating a more favorable environment for crop growth. However, the effects of biochar vary significantly depending on the soil type, crop species, and biochar application rate. This study explored the impact of biochar application made from branches and twigs on soil pH and electrical conductivity (EC), under Avena sativa cultivation. Biochar was applied at rates of 0, 2, 4, and 8 tons per hectare, and soil pH and EC, and plant growth were monitored over two and a half months. The results demonstrated that biochar initially increased soil pH, with higher application rates of 4 and 8 t/ha, reaching mild alkaline levels favorable for leguminous crops. Biochar significantly increased pH and EC, particularly at higher rates, although the effects diminished over time. These findings highlight the potential of biochar as a short-term soil amendment for pH and nutrient enhancement in acidic soils. This study emphasizes the need for periodic applications or combined soil management strategies to sustain soil quality improvements. This study contributes to sustainable agriculture by offering insights into the role of biochar in enhancing soil health and productivity. Further research on the long-term effects of biochar and its interactions with other soil amendments could help optimize its use for sustainable crop production.