Abstract
This lab focuses on estimating the cation exchange capacity (CEC) in soils, which is a proxy of its fertility and ability to hold nutrients. Cation exchange occurs when cations in solution replace adsorbed cations on clay and humus particles, which have negative charges on their surfaces and can attract and retain cations. The lab involves filtering soil samples with 0.2 N KCl and distilled water and testing the filtrates for calcium using saturated ammonium oxalate. Soils rich in clay, organic matter, and humus have high CEC, while sandy soils have low CEC and are prone to leaching losses. Adding organic matter to the soil is an effective way to increase CEC and nutrient retention.
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References
Brady NC, Weil RR (2016) The nature and properties of soils. 15th ed., Pearson
Cornell University Agronomy Fact Sheet #22: Cation Exchange Capacity (CEC). http://nmsp.cals.cornell.edu/publications/factsheets/factsheet22.pdf Accessed on May 14, 2023
Howard J (2017) Anthropogenic Soils, Progress in Soil Science, Springer International Publishing AG
Mengel DB. Agronomy Guide. Purdue University Cooperative Extension Service. Fundamentals of Soil Cation Exchange Capacity (CEC). https://www.extension.purdue.edu/extmedia/ay/ay-238.html Accessed on July 2, 2023
Sonon LS, Kissel DE, Saha U (2022) UGA Cooperative Extension Circular 1040. Cation Exchange Capacity and Base Saturation. https://secure.caes.uga.edu/extension/publications/files/pdf/C%201040_3.PDF Accessed on July 2, 2023
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Paltseva, A. (2024). How Do Cations Exchange in The Soil?. In: The Urban Soil Guide. Springer, Cham. https://doi.org/10.1007/978-3-031-50777-9_13
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DOI: https://doi.org/10.1007/978-3-031-50777-9_13
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