Synergistic Effects of Biochar and Nitrogen Fertilizer on Soil Humification and Japonica Grain Yield in Black Soil Paddy Systems of Northeast China

Biochar and Humic Acid Effects on Soil Properties and Soybean Growth in Coastal Sandy Soil

Coastal sandy soil remains constrained by its low capacity to retain water and essential nutrients, particularly nitrogen, which is highly susceptible to leaching. This study aimed to evaluate the effects of rice husk biochar and humic acid application on soil chemical properties and their relationship with soybean gro...

Linking Soil Properties to Grain Quality: Individual and Combined Effects of Rice Husk Biochar and Potassium Humate in Paddy Rice Systems

The integrated effects of biochar and humate on soil nutrient status, shoot nutrient accumulation, and grain composition and quality remain underexplored. This field study evaluated four treatments—control, rice husk biochar (RHB; 15 t/ha), potassium humate (KH; 6.3 kg/ha), and RHB + KH—on soil properties, shoot nutrie...

Fertilizer reduction combined with humic acid and biochar improves physical properties of a sodic soil

Co-application of biochar and inorganic fertilizer improves soil chemical properties without increasing carbon dioxide efflux in Alfisols of Morogoro, Tanzania

Combining biochar with inorganic fertilizers has gained global significance as a strategy for improving soil fertility; however, the agronomic and biogeochemical responses of soil remain inconsistent across environments and are further underexplored in Sub-Saharan Africa. This study evaluated the interactive effects of...

Effects of integrated use of coffee husk and maize straw biochar‐based fertilizers on maize yields, nutrient uptake and soil properties in southern Ethiopia

In Ethiopia, the use of fertilizer is low due to high cost and limited availability, leading to low yields. Using organic amendment, such as biochar together with mineral fertilizers could be a more effective solution. A field experiment was conducted in clay‐textured soil with a slightly acidic pH of 5.82, located in...

Integrated Biochar and Humic Acid Application Enhances Soil Health and Oat Forage Productivity in the Agro-Pastoral Ecotone of North China

Soil degradation in the agro-pastoral ecotone of North China severely constrains the productivity of vital forage crops like oat (Avena sativa L.). While biochar and humic acid are known soil amendments, their combined synergistic effects and optimal application ratios remain poorly understood. This study aimed to inve...