Forms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia

Quantity-intensity (Q/I) characteristics are among conventional approaches for studying potassium dynamics and its availability. This was assessed to determine availability in four districts: namely, Sodo Zuria, Damot Gale, Damot Sore, and Boloso Sore, at three different land use systems (enset-coff...

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Main Authors:	Mesfin Kassa, Fassil Kebede, Wassie Haile
Format:	article
Language:	EN
Published:	Hindawi Limited 2021
Subjects:	Agriculture (General) S1-972 Environmental sciences GE1-350
Online Access:	https://doaj.org/article/4c58c01b9fd04347a5fcd0658ccbd75f
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spelling	oai:doaj.org-article:4c58c01b9fd04347a5fcd0658ccbd75f2021-11-08T02:37:17ZForms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia1687-767510.1155/2021/9917316https://doaj.org/article/4c58c01b9fd04347a5fcd0658ccbd75f2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/9917316https://doaj.org/toc/1687-7675Quantity-intensity (Q/I) characteristics are among conventional approaches for studying potassium dynamics and its availability. This was assessed to determine availability in four districts: namely, Sodo Zuria, Damot Gale, Damot Sore, and Boloso Sore, at three different land use systems (enset-coffee, crop land, and grazing land). Fractionation and dynamics of K sources were studied in soil samples, which were collected from 0–20 cm depth of each land system. The study revealed that water extractable K (H2O-K) concentrations ranged from 0.13 to 0.34 cmolc kg−1 soils at enset-coffee and grazing land use systems, respectively, and had a mean value of 0.28 cmolc kg−1 soils ammonium acetate extractable (NH4OAC-K) and nitric acid extract (HNO3-K) had a mean value of 0.25 cmolc kg−1 soils. In this study, the means of nonexchangeable- and exchangeable-K concentrations were of 0.11 and 0.14 cmolc kg−1 soils for land use types. Significant correlations were found between soil properties and Q/I parameters and among equilibrium solution parameters and Q/I parameters. There was no significant variation among the mean quantity values of the soils. The soils had higher change in exchangeable-K and potential buffering capacity than the enset-coffee land use soils, and the cop land had the highest values for these parameters. However, the enset-coffee land use soils had higher K-intensity. Therefore, application of site specific soil fertility management practices and research can improve soil K status and Q/I parameters to sustain productivity soils.Mesfin KassaFassil KebedeWassie HaileHindawi LimitedarticleAgriculture (General)S1-972Environmental sciencesGE1-350ENApplied and Environmental Soil Science, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Agriculture (General) S1-972 Environmental sciences GE1-350
spellingShingle	Agriculture (General) S1-972 Environmental sciences GE1-350 Mesfin Kassa Fassil Kebede Wassie Haile Forms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia
description	Quantity-intensity (Q/I) characteristics are among conventional approaches for studying potassium dynamics and its availability. This was assessed to determine availability in four districts: namely, Sodo Zuria, Damot Gale, Damot Sore, and Boloso Sore, at three different land use systems (enset-coffee, crop land, and grazing land). Fractionation and dynamics of K sources were studied in soil samples, which were collected from 0–20 cm depth of each land system. The study revealed that water extractable K (H2O-K) concentrations ranged from 0.13 to 0.34 cmolc kg−1 soils at enset-coffee and grazing land use systems, respectively, and had a mean value of 0.28 cmolc kg−1 soils ammonium acetate extractable (NH4OAC-K) and nitric acid extract (HNO3-K) had a mean value of 0.25 cmolc kg−1 soils. In this study, the means of nonexchangeable- and exchangeable-K concentrations were of 0.11 and 0.14 cmolc kg−1 soils for land use types. Significant correlations were found between soil properties and Q/I parameters and among equilibrium solution parameters and Q/I parameters. There was no significant variation among the mean quantity values of the soils. The soils had higher change in exchangeable-K and potential buffering capacity than the enset-coffee land use soils, and the cop land had the highest values for these parameters. However, the enset-coffee land use soils had higher K-intensity. Therefore, application of site specific soil fertility management practices and research can improve soil K status and Q/I parameters to sustain productivity soils.
format	article
author	Mesfin Kassa Fassil Kebede Wassie Haile
author_facet	Mesfin Kassa Fassil Kebede Wassie Haile
author_sort	Mesfin Kassa
title	Forms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia
title_short	Forms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia
title_full	Forms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia
title_fullStr	Forms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia
title_full_unstemmed	Forms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia
title_sort	forms and dynamics of soil potassium in acid soil in the wolaita zone of southern ethiopia
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/4c58c01b9fd04347a5fcd0658ccbd75f
work_keys_str_mv	AT mesfinkassa formsanddynamicsofsoilpotassiuminacidsoilinthewolaitazoneofsouthernethiopia AT fassilkebede formsanddynamicsofsoilpotassiuminacidsoilinthewolaitazoneofsouthernethiopia AT wassiehaile formsanddynamicsofsoilpotassiuminacidsoilinthewolaitazoneofsouthernethiopia
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Forms and Dynamics of Soil Potassium in Acid Soil in the Wolaita Zone of Southern Ethiopia

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