DETRMINATION OF GREENHOUSE GAS EMISSIONS IN SELECTED LOCAL GOVERNMENT AREAS OF OYO STATE, NIGERIA

Abstract

Effects of Greenhouse gas emissions, particularly from agriculture practices like deforestation, livestock farming, use of nitrogen fertilizers, and human factors like burning of fossil fuels since industrial age, waste management and other factors, exacerbate climate change, impacting crops yields, livestock production, and the overall sustainability of agricultural systems and human existence. The aim of the study was to determine Greenhouse gas emissions in some selected Local Government Areas of Oyo state, South Western Nigeria. Multi stage sampling was used to select arable farmers in five Local Government Areas of Oyo State, Orire 36 respondents, Surulere 220 respondents, Irepo 32 respondents, Orelope 7 respondents and Olorunsogo 37 respondents, totaling 332 selected farmers, a structured questionnaire was administered to elicit information from the respondents. Soil samples were collected from the farm field of one farmer each of the local government areas for laboratory analysis, the data were subjected for SAS, 2005 package was employed used, ANOVA was used, means were separated with Duncan multiple range test on the soil samples data collected from the study areas. Carbon emissions in Irepo local government area, in the year 2023,wet season had the higher emissions of carbon,16.37ppm, nitrogen emissions was higher in wet season,0.737ppm, oxygen emissions was higher in wet season,0.023ppm, while methane emissions was higher in dry season, 0.067ppm.In the year 2024, emissions of carbon was higher in dry season,13 75ppm, nitrogen emissions was higher in wet season,0.559ppm, oxygen emissions was higher in wet season,0.033ppm and methane emissions was higher in wet season,0.163ppm.In Olorunsogo in the year 2023 wet season had the higher carbon emissions,14.47ppm, nitrogen had the higher emissions in the wet season,0 63ppm.dry season had the higher emissions of oxygen,0.04ppm,while methane emissions was higher in dry season,0.10ppm.In the year 2024, carbon emissions was higher in wet season,13.68ppm, nitrogen emissions was higher in wet season,0.47ppm, oxygen emissions was higher in dry season,0.06ppm,while methane emissions was higher in wet season,0.14ppm. In Orelope, in the year 2023, carbon emissions was higher in the wet season,17.36ppm, nitrogen emissions was higher in the wet season,0.630ppm, oxygen emissions was higher in the dry season,0.060ppm, while methane emissions was higher in dry season,0.137ppm.In the year 2024, carbon emissions was higher in dry season,13.667ppm, nitrogen emissions was higher in wet season,0.471ppm, oxygen emissions was higher in dry season,0.077ppm,while methane emissions was higher in dry season,0.170ppm.In Orire, in the year 2023, carbon emissions was higher in wet season,17.387ppm, nitrogen emissions was higher in the wet season,0.580ppm, oxygen emissions was higher in the dry season,0.033ppm, while methane emissions was higher in the dry season,0.143ppm.while in the year 2024, carbon emissions was higher in the wet season,14.587ppm, nitrogen emissions was higher in the wet season,0.583ppm, oxygen emissions was higher in the wet season,0.060ppm, while methane emissions was higher in the dry season,0.200ppm. In Surulere, in the year 2023, carbon emissions was higher in the wet season,16.273ppm, nitrogen emissions was higher in the wet season,0.611ppm, oxygen emissions was higher in the dry season,0.050ppm,while methane emissions was higher in the dry season,0.143ppm.In the year 2024, carbon emissions was higher in the wet season, 15.530ppm, nitrogen emissions was higher in the wet season, 0.628ppm, oxygen emissions was higher in the wet season, 0.030ppm, while methane emissions was higher in the dry season, 0.223ppm. Comparison of the Greenhouse gas emissions in the five Local Government Areas; In the year 2023, Orire had the higher emissions of carbon,16.368ppm, in the year 2024, Surulere had the higher carbon emissions, 14.485ppm, in the year 2023, Irepo had the higher nitrogen emissions, 0.528ppm, while in the year 2024, Surulere had the higher nitrogen emissions, 0.515ppm. In the year 2023, Orelope had the higher oxygen emissions, 0.052ppm while in the year 2024, Orelope had the higher oxygen emissions, 0.057ppm. In the year 2023, Surulere had the higher emissions of methane, 0.138ppm, in the year 2024, Surulere had the higher emissions of methane, 0.163ppm. Comparison by season of each Greenhouse gas emissions yearly; In the year 2023, carbon emissions was higher in the wet season, 16.6373ppm, in the year 2023, nitrogen emissions was higher in wet season,0.637ppm, in the year 2024, oxygen emissions was higher in dry season, 0.044ppm, while in the year 2024, methane emissions was higher in dry season, 0.161ppm. Each Greenhouse gas emissions yearly; Year 2023 had the higher emissions of carbon,15.186ppm,year 2023 had the higher emissions of nitrogen, 0.483ppm,year 2024,had the higher emissions of oxygen, 0.043ppm, while year 2024,had the higher emissions of methane, 0.147ppm.