Saowanee Wijitkosum and colleagues, in their study recently published in Emerging Science Journal , explore how a single application of biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More and compost influences soil health and maize productivity over five consecutive crop cycles. The research provides valuable insights into sustainable soil management practices for long-term agricultural benefits.

The study compared the effects of biochar alone and in combination with compost on soil properties and maize yield over 2.8 years. Experimental plots received either compost alone, biochar at two different rates or a combination of biochar and compost. Results showed that biochar significantly improved soil pHpH is a measure of how acidic or alkaline a substance is. A pH of 7 is neutral, while lower pH values indicate acidity and higher values indicate alkalinity. Biochars are normally alkaline and can influence soil pH, often increasing it, which can be beneficial More, organic matter, and cation exchange capacity (CEC). These enhancements persisted throughout all five cultivation cycles, reducing nutrient loss and improving soil fertility.

Maize yield was highest in plots treated with more biochar combined with compost. Biochar alone also improved yield compared to compost-only treatments, demonstrating its ability to retain soil nutrients. However, benefits started to decline after the third cultivation cycle, suggesting that periodic reapplication may be necessary for sustained productivity.

This research highlights the potential of biochar to enhance soil health and crop yield with minimal inputs. By optimizing biochar and compost application rates, farmers can improve soil conditions while reducing reliance on chemical fertilizers. Future studies should explore the long-term microbial interactions and economic feasibility of biochar-based soil amendments.

SOURCE: Wijitkosum, S., Sriburi, T., & Toonsiri, P. (2025). Effect of one-time application of biochar and compost on soil and maize during five-time consecutive periods of crop cultivation. Emerging Science Journal, 9(1), 114–127. https://doi.org/10.28991/ESJ-2025-09-01-07