ISSN: 2155-9600
+32 25889658
Pawendtaoré Christian Bougma
Laboratoire de Biologie et Ecologie Végétales, Université Joseph Ki-ZERBO, Burkina Faso
Scientific Tracks Abstracts: J Nutr Food Sci
The application of nitrogen (N) fertilizers to agricultural soils is a primary source of nitrous oxide (N2O) emissions to the atmosphere. Improving fertilizer management is identified as a potential mitigation option for N2O emissions. However, few studies are poorly investigated, limiting mitigation actions and climate-smart agriculture promotion. The objective of this study was to assess the effect of different fertilizers on soil N2O emissions and other parameters associated with N fertilizers; and develop N2O emission factor (EF) to improve the national greenhouse gas inventory. To achieve this, four (04) fertilization treatments: Mixture (manure + chemical fertilizer), local traditional fertilization, NPK, cattle manure, and control treatment were investigated under a randomized complete block design using static chamber and gas chromatography systems based in Burkina Faso. Results indicated that mixture fertilization including chemical fertilizer recorded the highest and most significant (P<0.01) cumulative N2O emissions (2.86 ± 00.7 Kg N2O-N ha-1 season-1) while the manure application recorded the lowest N2O emissions (2.38 ± 0.03 Kg N2O-N ha-1 season-1). N2O EF from cattle manure (1.67 ± 0.6%) was found to be lower than that from only chemical fertilizer (1.90 ± 0.4%). Results showed that N rate had a significant (P<0.001) effect on soil N2O emissions, with a linear positive response (R2 = 0.77) on cumulative N2O. However, when organic manure was applied, the impact of CH4 and N2O emissions on Global Warming Potential was significantly (P<0.01) enhanced (652.78 ± 15 kg CO2 eq. ha-1 Season-1) with the lowest value. Our results suggest that the application of cattle manure can be promoted because it slightly reduces N2O emissions. This study contributes to more robust estimates of greenhouse gas emissions from African farmland systems, which are fundamental to updating NDCs and developing targeted mitigation strategies..
Christian BOUGMA is PhD student in the Laboratory of Plant Biology and Ecology, University Joseph Ki-Zerbo, Ouagadougou, Burkina Faso (West Africa). He currently assesses Greenhouse Gas emissions under different crop systems to implement Climate Smart Agriculture in West Africa and propose mitigation actions to policymakers and farmers to reduce GHG emissions. He was a member of the drafting committee for Burkina Faso’s National Climate Change Adaptation Plan (2024-2028). Currently assessing the modeling and mitigation of GHG emissions from rice cultivation using agronomic strategies at University of Agriculture, Faisalabad / Pakistan, He focuses her research on Agricultural greenhouse gas mitigation and emissions due to land use change through a multidisciplinary research team composed by expert which Prof. Dr. Oumarou OUEDRAOGO is the lead.