Abstract
The agro-environmental impact of supplemented biochar manure pellet fertilizer (SBMPF) application was evaluated by exploring changes of the chemical properties of paddy water and soil, carbon sequestration, and grain yield during rice cultivation. The treatments consisted of (1) the control (no biochar), (2) pig manure compost pellet (PMCP), (3) biochar manure pellets (BMP) with urea solution heated at 60 °C (BMP-U60), (4) BMP with N, P, and K solutions at room temperature (BMP-NPK), and (5) BMP with urea and K solutions at room temperature (BMP-UK). The NO3−–N and PO4−–P concentrations in the control and PMCP in the paddy water were relatively higher compared to SBMPF applied plots. For paddy soil, NH4+–N concentration in the control was lower compared to the other SBMPFs treatments 41 days after rice transplant. Additionally, it is possible that the SBMPFs could decrease the phosphorus levels in agricultural ecosystems. Also, the highest carbon sequestration was 2.67 tonnes C ha−1 in the BMP-UK treatment, while the lowest was 1.14 tonnes C ha−1 in the BMP-U60 treatment. The grain yields from the SBMPFs treatments except for the BMP-UK were significantly higher than the control. Overall, it appeared that the supplemented BMP-NPK application was one of the best SBMPFs considered with respect to agro-environmental impacts during rice cultivation.
Highlights
Developing methodologies to improve crop productivity and protect soil systems while mitigating environmental pollution is the current direction of research in sustainable agriculture [1,2,3]
It was observed that NH4 + –N concentrations in the treatments were higher on the first day of rice transplants, but similar to the rest of the days
Different supplemented biochar manure pellet fertilizers were tested to assess their agroenvironmental impacts on paddy water and soil systems during rice cultivation
Summary
Developing methodologies to improve crop productivity and protect soil systems while mitigating environmental pollution is the current direction of research in sustainable agriculture [1,2,3]. Biomass conversion from agricultural wastes to carbon-rich materials such as biochar has been recognized as a promising option to maintain or increase soil productivity [4], reduce nutrient losses [5], and mitigate greenhouse gas emissions [6] from the agroecosystem. It is estimated that 50 million tonnes of the 80 million tonnes of organic wastes produced in Korea originate from agriculture [7]. Carbon sequestration utilizing recycled organic wastes through biomass conservation technology can greatly mitigate greenhouse gas emissions and the environmental impact of organic waste in. Converted biochar from agricultural biomass becomes recalcitrant carbonaceous structures. The structures and components of biochars are strongly related to the source of feedstock and the operating
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
