Impact of Biochar and NPK Fertilization on Tomato (Solanum lycopersicum L.) Growth, Yield and Soil Properties in Degraded Tropical Soils
IBRAHIM GREMA Maman Hamissou, KONAN Affoué Tindo Sylvie, KOUADIO Yao Didier Marius, GARBA LABO Mahaman Nazirou, AMADOU KIARI Mahamane Nassirou, BROU Yao Casimir, YAO Kouassi Benjamin
Annual Research & Review in Biology · pp. 136–150 · Published 29 Oct 2025
10.9734/arrb/2025/v40i102328Abstract
This study investigates the effects of biochar applied at different concentrations on tomato growth, yield, and soil properties. In greenhouse experiments, the application of 2% biochar significantly enhanced plant growth parameters, including height, stem diameter, and number of leaves. It also improved soil physical and chemical properties, such as water retention, aggregate stability, and nutrient availability, ultimately leading to increased tomato yield. In contrast, higher biochar concentrations (5% and 10%) negatively affected plant growth, underscoring the importance of dosage optimization. In field trials, the application of NPK fertilizer (12-22-22) at 200 kg/ha resulted in the highest yield increase, while biochar applied at 1 t/ha improved productivity compared to the control. These findings demonstrate the potential of biochar and NPK as effective soil amendments to enhance crop yield and promote soil sustainability.
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