Exchange equilibria of potassium in soils, V. Effect of natural organic matter on K-Ca exchange

Poonia, S. R.; Niederbudde, E. A.

doi:10.1016/0016-7061(90)90031-4

Cited by 13 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The small Kv values are in accordance with the results reported for soils containing large amounts of organic matter and noncrystalline aluminum silicates (Goulding 1983). The relatively large Kv values at small EK values may also be attributed to the presence of organic matter and noncrystalline aluminum silicate because soil organic matter, in some soils, contributed positively to the K selectivity (Poonia et al 1986;Poonia and Niederbudde 1990) and because some noncrystalline aluminum silicates having high silica contents exhibited a high K-selectivity (Perrott 1981). Since In Kv decreased quite linearly as EK increased in the relatively small EK range of 0 to 0.1, we used the following equation:…”

Section: Resultssupporting

confidence: 90%

“…Recently, Levy et al (1988) have studied K-Ca exchange on kaolinite and kaolinitic soils. Poonia and Niederbudde (1990) and Dhillon and Dhillon (1991a, b) investigated the effect of natural soil organic matter and farmyard manure on the Kselectivity of soils. Datta and Sastry (1991) measured the critical K concentration for the release of non-labile K in soils dominated by micaceous clay minerals.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Wada

Odahara

1993

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

Section: Resultssupporting

confidence: 90%

mentioning

confidence: 99%

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Wada

Odahara

1993

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

“…Omalos samples exhibit the lowest K + availability and they are slightly different to La soil samples which are probably connected with increased K leaching due to higher precipitation in Omalos Plateau compared to Lasithi Plateau. In addition, potassium availability in our case is controlled by both illite content and organic matter, which is an unusual case and it is observed only when organic matter contribution in the total CEC is less than 15%, which has been shown by detailed study of Poonia and Niederbudde [52] on the K + absorption in soils. The aforementioned is verified by the weak interrelation of OM% and CEC as revealed in PCA (Figure 2(b)).…”

Section: +supporting

confidence: 67%

Chemical and Physical Characteristics in Uncultivated Soils with Different Lithology in Semiarid Mediterranean Clima

Moraetis

Lydakis-Simantiris

Pentari

et al. 2016

Applied and Environmental Soil Science

View full text Add to dashboard Cite

The aim of this study is to identify the chemical and physical characteristics in uncultivated soils derived from different parent materials under semiarid Mediterranean climatic conditions which favoured the formation of fragile soils. The current work is of great interest in the agriculture and environmental stakeholders for providing a "benchmark" of undisturbed soil quality regarding organic content and nutrients availability. Principal Component Analysis (PCA) was used as the primary tool to demonstrate the soil quality stage, regarding nutrient availability. The statistical analysis revealed that one of the major physicochemical characteristics such as cation exchange capacity (CEC) is controlled exclusively from mineralogy and not from organic matter. Mineralogy and bulk chemical analysis is directly related to soil parent material lithology. The availability of inorganic nutrients (macro-and micronutrients) is low and relatively identical to most of the soils. PCA shows the unusual correlation of K + with not only illite content but also the OM in soils. The development of soils which are already of low quality in respect of organic content and nutrients is evident in Crete in most of the 54 samples investigated.

show abstract

“…The qualitative nature of the soil substrate and their quantitative proportion of surface reactivity, referred as surface charge density (SCD), control the rate of SOC sequestration. Increase in organic C enhances SCD of the soil and the ratio of internal/external exchange sites (Poonia and Niederbudde, 1990). It may be mentioned that the dominant soils in SAT environments are black soils (Vertisols and their intergrades, with some inclusions of Entisols in the hills) and associated Alfisols.…”

Section: Distribution Of Soil Carbon In Different Soil Orders Of Tropmentioning

confidence: 99%

Processes Determining the Sequestration and Maintenance of Carbon in Soils: A Synthesis of Research from Tropical India

et al. 2014

View full text Add to dashboard Cite

Soil organic carbon (SOC) is the major determinant of soil quality, and it greatly influences global carbon cycling and climate change. This paper is a synthesis of the literature on soil carbon research in India, including soil organic and inorganic carbon stocks, in the form of thematic maps for national and regional level planning at bioclimatic systems and agroecological subregion levels in the country. The potential role of soils in mitigating the global warming effects of atmospheric CO2 is discussed using results from Indian tropical soils. The database on Indian soils collected through natural resource inventory and soil carbon and crop modeling approaches show that sequestration of atmospheric CO2 occurs as pedogenic carbonates and plays role as a soil modifier in enhancing soil organic carbon in the drier parts of the country through management interventions. Clearly, soils can act as a potential medium for sequestering atmospheric CO2 to mitigate the global warming effect.

show abstract

Exchange equilibria of potassium in soils, V. Effect of natural organic matter on K-Ca exchange

Cited by 13 publications

References 11 publications

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Chemical and Physical Characteristics in Uncultivated Soils with Different Lithology in Semiarid Mediterranean Clima

Processes Determining the Sequestration and Maintenance of Carbon in Soils: A Synthesis of Research from Tropical India

Contact Info

Product

Resources

About