INFLUENCE OF SOIL PHYSICAL PROPERTIES ON SOIL LOSS DUE TO YAM HARVESTED ON A SANDY LOAM SOIL IN IWO, OSUN STATE, NIGERIA
Abstract
Soil loss due to crop harvesting (SLCH) has been established as an important soil erosion process that has contributed to soil degradation in many countries of the world. However, the quantification of SLCH, particularly concerning yam tubers, remains unstudied globally, despite yam being a crucial staple food in Nigeria. This research examines how soil physical properties affect soil loss during yam harvesting on sandy loam soil in Iwo, Osun State, Nigeria. Manual harvesting of yam tubers was conducted, measuring both their weight and the soil attached to them. The study analyzed the impact of soil properties such as aggregate stability, available water content, bulk density, and texture on soil loss. Results indicated sand content (671.00 g/kg), a bulk density of 1.30 g/cm³, saturated hydraulic conductivity of 7.37 cm/hr, and a moisture content of 15.70%. The infiltration rate averaged 12.5 units in 11 minutes. Manual mound tillage produced the highest soil loss (160.00 kg/ha/harvest), while Zai pit tillage resulted in the least (75.60 kg/ha/harvest). The study highlights the importance of adopting effective soil conservation practices and suggests developing yam harvesters that replicate the hand rubbing technique to reduce soil loss.
References
Adekalu, K.O., Okunade, D.A., and Osunbitan, J.A. (2006). Compaction and mulching effects on soil loss and runoff from two southwestern Nigeria agricultural soils. Geoderma, 137(12), 226230. DOI: https://doi.org/10.1016/j.geoderma.2006.08.012
Baruah, T. C., and Barthakur, H. P. (1997). A text book of soil analysis. Vikas Publishing House. Pvt. Ltd. New Delhi, India. Pp 203.
Brady, N.C., and Weil, R.R. (2008). The Nature and Properties of Soils (14th ed.). Pearson Prentice Hall.
Brady, N.C., and Weil, R.R. (2016). The Nature and Properties of Soils (15th ed.). Pearson Education.
Bouyoucos, G.J. (1965). Hydrometer method improved for making particle size analysis of soils. Soil Science Society of America Proceeding 26: 917- 925.
Dada, P.O.O., Adeyanju, O.R., Adeosun, O.J., Adewumi, J.K., 2016. Effects of soil physical properties on soil loss due to manual yam harvesting under a sandy loam environment. Inter. Soil Water Conserv. Res. 4, 121125. DOI: https://doi.org/10.1016/j.iswcr.2016.02.007
Ezeaku, P.I., andIwuafor, E.N.O. (2020). Erosion and soil degradation management in Nigeria: Issues and perspectives. Agro-Science Journal of Tropical Agriculture, Food, Environment and Extension, 9(3), 161169.
Fenton, O.,Peyton, D. P., Healy, M. G., Fleming, G. T. A. Grant, J. Wall, D., Morrison, L. and Cormican, M. (2016). Nutrient, metal and microbial loss in surface runoff following treatedsludge and dairy cattle slurry application to an Irish grassland Food and Agriculture organization (FAO), International Soil Reference and Information DOI: https://doi.org/10.1016/j.scitotenv.2015.09.053
Jaiyeoba, I.A., and Olayemi, A. (2001). Soil conditions and crop yields under alley cropping with Gliricidiasepium in southwestern Nigeria. Agroforestry Systems, 51(2), 111118.
Kjeldahl, J., (1883). A new method for the estimation of nitrogen in organic compounds. Z.Analitical Chemistry 22 (1), 366.
Lal, R. (1998). Soil erosion impact on agronomic productivity and environment quality. Critical Reviews in Plant Sciences, 17(4), 319464. DOI: https://doi.org/10.1080/07352689891304249
Mehlich, A., (1984). Mehlich 3 soil test extractant: a modification of Mehlich 2 extractant.Commun. Soil Science Plant Analysis 15 (no. 12), 14091416. DOI: https://doi.org/10.1080/00103628409367568
Obalum, S.E., Chibuike, G.U., Peth, S., and Ouyang, Y. (2012). Soil organic matter as sole indicator for evaluating soil degradation in the humid tropics. Solid Earth, 3, 149159.
Obi, M.E. (2020). Soil Physics: A Compendium of Lectures. Atlanto Publishers.
Ojeniyi, S.O. (2022). Soil physical conditions and maize yield under different tillage methods in a tropical Alfisol. Soil and Tillage Research, 64(34), 121128.
Ola, A.M., Abagyeh, S.O., and Makinde, E.A. (2018). Varietal influence on soil physical properties in yam-based cropping systems. African Journal of Agricultural Research, 13(12), 616622.
Opara, L.U. (2000). Journal of Root Crops, 26(1), 3440.
Oshunsanya, S. O., (2016). Quantification of soil loss due to white cocoyam (Colocasia esculentus) and red cocoyam (Xanthosoma sagittifolium) harvesting in traditional farming system. Catena 134143 DOI: https://doi.org/10.1016/j.catena.2015.09.013
Six, J., Elliott, E.T., and Paustian, K. (2000). Soil macroaggregate turnover and microaggregate formation: A mechanism for C sequestration under no-tillage agriculture. Soil Biology and Biochemistry, 32(14), 20992103. DOI: https://doi.org/10.1016/S0038-0717(00)00179-6
Soil Science Society of America, 2002. Methods of soil analysis, physical methods. In:Warren, A.D. (Ed.), Part 4, Madison, Wisconsin, USA.
Udo, E. J., and Ogunwale, J. A., (1986). Laboratory manual for the analysis of soil, plant and water samples, Ibadan, Nigeria. Department of Agronomy, University of Ibadan, Nigeria.
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