Determination of the effect of changes in climatic factors on the variations in soil physicochemical properties of farm settlements located in Ogun State, Nigeria

Abstract

ABSTRACT:The study of the response of soil to climate change is of fundamental importance for sustainability of life through agriculture. This paper determines variations in physicochemical properties of farm settlements soils, assesses the effect of changes in climatic factors (temperature, relative humidity, and rain-fall) on these soil physicochemical properties and its implication on plant growth. Soil samples were collected from two farm settlements in the major geological zones in Ogun State Southwest, Nigeria. Physicochemical properties of the collected soil samples were determined using standard methods and metrological data were collected from metrological offices in the state. The result of the soil physicochemical properties ranges between; 5.84-6.39 (pH), 14.6-24.9 g/kg (organic carbon (O.C)), 15.9-19.9 mg/kg (phosphorus), 0.99-1.90 g/kg (nitrogen), 2.95-10.3 cmol/kg (cation exchange capacity (CEC)), 0.21-0.33 (exchangeable acidity), 78.1-89.2 (% sand), 5.70-10.2 (% clay) and 4.18-11.8 (% silt). Significant seasonal variations were found in the results obtained from the two farm settlements in properties like: pH, organic carbon and N at 0.05%. Higher C/N ratio recorded in some of the analysed soils may lead to the release of CO2 which is a greenhouse gas. Variations observed in all the climatic factors considered in this study with O.C, CEC, % clay and % silt at p<0.01 can be used to assess the effect of climate change on soil health and assist in devising climate adaptive strategies. In other to reduce the negative implication of these variations on plant growth, irrigation facilities must be provided in the studied farms.

Soil pH mapping as a function of land use, elevation, and rainfall in the lake tana basin, northwestern of ethiopia

“…Additionally, the CO 2 generated from soil water might result in the formation of an acidic compound, which lowers the pH of the soil (Dar et al., 2021; Weil, 2017). This result is consistent with the results of Giweta (2020), Osobamiro and Adewuyi (2018), and Dingaan et al. (2017).…”

“…Another method is the increased release of H + ions from carbonic acid (e.g., root respiration and soil organic carbon breakdown). Some scholars (Osobamiro & Adewuyi, 2018) claim that the generation and subsequent dissociation of H + ions from carbonic acid are the main contributors to soil acidity.…”

The impact of season on the dynamics of trace elements and heavy metals in shallot farming system and their human health Risk evaluation

“…Thus, the microbiological decomposition process of organic waste slows down and the organic C content in the soil increases [37]. Additionally, temperature was thought to have an effect on the organic C content of the soil, where a higher temperature in the dry season causes the decomposition of organic matter to take place more quickly, thereby reducing organic carbon in the soil [38], [39].…”