Apparent Salt Sorption Reactions in an Unfertilized Acid Subsoil

Pearce, Robert C.; Sumner, M. E.

doi:10.2136/sssaj1997.03615995006100030009x

Cited by 30 publications

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“…The augmentation of calcium sorption by soils caused by the presence of sulfate has been reported for soils by MarcanoMartinez and McBride (1989), Bolan et al (1993), Pearce and Sumner (1997), and Cichota et al (2007aCichota et al ( , 2007b. Among the possible mechanisms responsible for this phenomenon, which was so-called salt sorption or ion pair sorption, that proposed by Marcano-Martinez and McBride (1989) seems to be reasonable for partially explaining the results found in the present research.…”

Section: Cation Leaching and Batch Sorption Experimentssupporting

confidence: 86%

“…Reeve and Sumner (1972) initially reported the sulfateinduced increase in the cation sorption by South African Oxisols; such effect was also observed in gypsum-treated Brazilian Oxisols (Sousa and Ritchey, 1986), whereas the more recent research focused on the sulfate-induced increase in calcium sorption (Marcano-Martinez and McBride, 1989;Pearce and Sumner, 1997;Cichota et al, 2007aCichota et al, , 2007b. However, although the sulfate-induced increase in cation sorption is reported in several articles, little is known about the influence of the clay mineralogical composition of weathered soils on this process not only for Ca 2+ , but also for other plant nutrients such as K + and Mg 2+ .…”

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Anion and Mineralogical Effects on K+, Ca2+, and Mg2+ Leaching in Oxisols

Okuma¹,

Alves²

2011

Soil Science

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Gypsum (CaSO 4 .2H 2 O) application favors root growth in acidic subsoils. Although previous research has shown that both sorption and cation leaching can be increased after gypsum application, little is known on the mineralogical effects on those opposite phenomena. In this article, the simultaneous leaching of K + , Ca 2+ , and Mg 2+ in the presence of either nitrate or sulfate was compared in column experiments carried out with two Oxisols with identical contents of clay-size particles composed of different amounts of the same minerals. In addition, the possible use of remaining phosphorus as predictor of cation fate in gypsumtreated soils was evaluated. The results showed a weathering-progressive retarding effect of sulfate on K + , Ca 2+ , and Mg 2+ leaching. Competitive batch sorption experiments showed that for both soils, the presence of sulfate increased the cation sorption, which was more intense in the soil richer in gibbsite and goethite, where the total cation sorption in the presence of sulfate exceeded its measured cation exchange capacity. Noncompetitive batch sorption experiments carried out with single minerals (i.e., kaolinite, gibbsite, hematite, and goethite) suggested that the cosorption of sulfate and K + , Ca 2+ , and Mg 2+ seems to be the main cause of the sulfate retardant effect on exchangeable base leaching in Oxisols. The results also suggest that gypsum application on weathered soils rich in gibbsite and goethite can increase their capacity for retaining exchangeable bases in excess of their measured cation exchange capacity values. The sulfate retardant effect on cation leaching is greater in soils with low remaining phosphorus values.

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Section: Cation Leaching and Batch Sorption Experimentssupporting

confidence: 86%

mentioning

confidence: 99%

Anion and Mineralogical Effects on K+, Ca2+, and Mg2+ Leaching in Oxisols

Okuma¹,

Alves²

2011

Soil Science

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“…Dentre Pearce & Sumner (1997) atribuiram à "adsorção de sais" a razão pela menor mobilidade do sulfato no solo, em relação ao cloreto. Bellini et al (1996) (Hern et al, 1988), e, possívelmente, o ocorrido neste trabalho com o tratamento com carbonato de cálcio, resultando em liberação de substâncias orgânicas pelo aumento do pH.…”

Section: Resultsunclassified

Movimentação de cátions em amostras de um Latossolo Vermelho-Amarelo incubadas com duas fontes de cálcio

Wadt¹,

Wadt

1999

Sci. agric. (Piracicaba, Braz.)

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RESUMO: Estudou-se a movimentação de cátions alcalinos e alcalinos terrosos (CAAT) em colunas de solo arranjadas com amostras de Latossolo Vermelho-Amarelo, álico, coletadas a profundidade de 0 a 5cm sob dois tipos distintos de cobertura, floresta secundária e grama batatais (Paspalum notatum L.), as quais foram superpostas em potes plásticos à amostras do horizonte Bw, da mesma unidade de solo. Aplicaram-se carbonato de cálcio, sulfato de cálcio ou a mistura das duas fontes de cálcio às amostras superficiais, as quais foram colocadas a incubar e depois submetidas a sete aplicações de água destilada, na taxa de 1 volume-poro por semana, durante sete semanas consecutivas. O lixiviado foi recolhido semanalmente e analisado para cálcio, magnésio, potássio e sulfato solúveis. Nos solos, fizeram-se determinações dos teores de cálcio, magnésio e potássio trocáveis, e a determinação da acidez potencial a pH 7,0. A aplicação de sulfato de cálcio favoreceu o processo de lixiviação de potássio e magnésio, enquanto que a aplicação de carbonato de cálcio minimizou a lixiviação. Concluiu-se que a utilização de sulfato de cálcio para a correção da deficiência de cálcio em subsolos ácidos deve ser acompanhada necessariamente da aplicação de carbonato. Palavras-chave: carbonato de cálcio, sulfato de cálcio, lixiviação, gesso agrícola, calagem CATION MOVEMENT IN SAMPLES OF A RED-YELLOW LATOSOL INCUBATED WITH TWO CALCIUM SOURCESABSTRACT: The movement of cations in an Oxisol (alic, Red-Yellow Latosol) was studied. Samples were collected within the first 5 cm of the topsoil from two types of plant cover (grass and secundary forest), and placed in plastic pots over samples of an Oxic horizon from the same soil. To the superficial samples, Calcium Carbonate, Calcium Sulphate, or the mixture of both were applied, incubated, followed by seven applications of distilled water, at the rate of one pore-volume a week. The leachate was collected every week and was analysed for soluble calcium, magnesium, potassium and sulphate. Evaluations of exchangeable calcium, magnesium and potassium, and of the potential acidity in pH 7.0 were performed in the soil. It was observed that the sulphate promoted a loss of potassium and magnesium, while the calcium carbonate minimized the loss. It was concluded that the use of calcium sulphate to correct calcium deficiency in acid subsoils has to be followed by the application of carbonate.

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“…The farmland soils of Western Kenya are acidic with widespread Ca, Mg, N and P deficiencies. Most soils found in the highlands of East of Rift valley and Western Kenya regions with a pH of 4.5 to 5.0 and high exchangeable Aluminium (III) ions which limits the availability and uptake of Ca, Mg and P in the soils through formation of insoluble aluminium complexes [6]. Acidic soils develop as a result of excessive leaching of basic cations, mainly Ca, Mg and K characterized by excessive rainfall and continuous use of acidifying fertilizer [7].…”

Section: Introductionmentioning

confidence: 99%

Influence of NPK Blended Fertilizer Application on Chlorophyll Content and Tissue Mineral Contents of Two Finger Millet Varieties Grown in Acid Soils of Kakamega, Western Kenya

Wamalwa

Sikuku

Netondo

et al. 2019

IJPSS

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Acidic soils with high exchangeable aluminium ions occur in most parts of Kenya, western Kenya inclusive. Aluminium toxicity is a serious environmental problem that affects crop productivity in Western Kenya region. The county governments of Kakamega, Bungoma, Vihiga, Busia and Trans-Nzoia are promoting the application of NPK blended fertilizer to ameliorate the soil acidity to increase maize production. Finger millet (Eleusine coracana L) is one of the important cereal crops in Kenya and has the ability to grow under unfavorable environmental conditions much better than other cereal crops. It is for this reason that it is currently being popularized in efforts to address food security in the region, however, the effects of NPK blended fertilizer application on the selected physiological parameters of the crop is little known, hence prompting the study. The objective of this study was to investigate the effect of NPK blended fertilizer application on chlorophyll content index and plant tissue mineral analysis. Randomized Complete Block Design with 0,25,50,75,100 kg application rates per acre of NPK blended fertilizer as the treatments were applied in two equal split applications. The measured parameters were chlorophyll content index using CCM-200 spectrophotometer, (Opti- Sciences Inc., Hudson, USA) from the plant leaves at 50% plot maturity. Motsara and Roy Procedures were used to determine plant tissue analysis for nitrogen, phosphorus, potassium, calcium, and magnesium at physiological maturity from the leaves. Data were subjected to analysis of variance (ANOVA) using GenStat statistical package version 15.1. Means were separated by Least Significant Difference (LSD) test at 0.05 probability level. Regression analysis was used to estimate the relationship between variables. At the 75 kg/acre rate, the leaves showed the significant P<0.05 chlorophyll content, calcium, and potassium in both varieties for the two seasons, short rain, and long rain respectively. Control had the lowest physiological activities for both seasons regarding chlorophyll content, tissue calcium, magnesium, nitrogen, phosphorus, and potassium. Significant nitrogen content was observed on Gulu-E variety for both seasons on the highest rate whereas the same trend was observed on P-224 variety and during the short rainy season, a linear increase was observed with increasing NPK blended fertilizer rates. No conclusive pattern was observed during the short rainy season but with the control exhibiting the lowest phosphorus content for both varieties. A significant response to physiology (chlorophyll and plant leaf tissue mineral) might have been due to increased uptake of mineral nutrients present in the NPK blended fertilizer and increased soil pH caused by the liming action of the NPK blended fertilizer.

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Apparent Salt Sorption Reactions in an Unfertilized Acid Subsoil

Cited by 30 publications

References 0 publications

Anion and Mineralogical Effects on K+, Ca2+, and Mg2+ Leaching in Oxisols

Anion and Mineralogical Effects on K+, Ca2+, and Mg2+ Leaching in Oxisols

Movimentação de cátions em amostras de um Latossolo Vermelho-Amarelo incubadas com duas fontes de cálcio

Influence of NPK Blended Fertilizer Application on Chlorophyll Content and Tissue Mineral Contents of Two Finger Millet Varieties Grown in Acid Soils of Kakamega, Western Kenya

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