The use of ascorbic acid to eliminate interference from iron in the aluminon method for determining aluminium in plant and soil extracts

Jayman, T. C. Z.; Sivasubramaniam, S.

doi:10.1039/an9749900296

Cited by 41 publications

(12 citation statements)

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“…Exchangeable Al was extracted by shaking 5 g samples of soil with 50 ml of IM KC1 for one hour. Aluminium in the extract was determined by the aluminon method (15). Cation exchange capacities were determined using 0.25M BaCl 2 as the extractant (16).…”

Section: Methodsmentioning

confidence: 99%

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Factors explaining variable lime responses in pastures: Calcium X zinc X phosphorus interactions

Bailey¹,

Stevens²

1989

Journal of Plant Nutrition

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Perennial ryegrass was grown on a wide range of unlimed and limed soils in an attempt to identify plant-soil factors which could explain the variable nature of lime responses in pastures. On most soils, lime responses appeared to be due either to enhanced soil nitrogen mineralization or to the alleviation of aluminium toxicity. On a small number of soils, however, the responses were not explicable by any known mechanism. On the basis of certain plant mineral compositional features it was proposed that these responses may have been due to improvements in the supply of calcium to shoot tissue as a result of liming. It was suggested that relatively low phosphorus/zinc ratios in grass shoots had stimulated the production of higher than normal concentrations of auxin, which in turn had increased the calcium requirement of growing tissue. Using selected data it was possible to show that relationships existed between the critical 388 BAILEY AND STEVENS concentration of calcium in grass and the concentrations of phosphorus and zinc, and between the critical concentration of phosphorus in grass and the concentrations of calcium and zinc. The results suggested that the reputed phosphorus-sparing effect of lime on grassland, may be due in part to the lower internal phosphorus requirements of grass grown on limed soils. INTRODUCTIONA number of unexplained results in recent glasshouse and field liming experiments (1,2,3,4) suggest that lime responses in grass swards are governed partly by factors which have not yet been identified. At present the beneficial effects of liming on grass production are attributed to alleviation of Al toxicity (5), enhanced soil N mineralization (3,6,7) and improved availability of fertilizer P (8,9). The detrimental effects of overliming on grass production are attributed to lowered availabilities of P (4,9) and certain trace elements (10,11) and enhanced gaseous losses of N (12). The purpose of the present investigation was to identify other factors which could help explain more fully some responses of grass swards to liming. The data base for the investigation was provided by a glasshouse experiment, where perennial ryegrass (Loiiurn perenne) was grown on a wide range of unlimed and limed soils.

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Section: Methodsmentioning

confidence: 99%

“…Cation exchange capacities were determined using 0.25M BaCl 2 as the extractant (16). Grass samples were analysed for total N, nitrate-N, P, K, Ca, Mg, Mn, Fe, Zn, B and S by standard procedures (14) and for Al by the aluminon method (15).…”

Section: Methodsmentioning

confidence: 99%

Factors explaining variable lime responses in pastures: Calcium X zinc X phosphorus interactions

Bailey¹,

Stevens²

1989

Journal of Plant Nutrition

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“…Aluminum was measured by aluminon method as described by Jayman and Sivasubramaniam (1974). Manganese was determined by atomic absorption spectroscopy.…”

Section: System IImentioning

confidence: 99%

Evaluation of Soil Extractants in Terms of Growth

Rao

2005

Communications in Soil Science and Plant Analysis

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There is a strong criticism against usage of buffered ammonium acetate as an extractant for the determination of exchangeable elements in acid soils dominated by low-activity clays. There are several reports regarding the use and misuse of diethylene triamine penta acetic acid as a universal extractant for iron, manganese, copper, and zinc, etc., in acid soils. Similarly there were several attempts to develop extractants to suit different soils. Rubber growing soils are classified as Ultisols and are acidic in reaction dominated by low-active clays. In this study, two systems of extraction of soil nutrients in rubber growing soils were compared. Soil samples from 14 different soils were extracted with neutral normal ammonium acetate for bases viz. calcium, magnesium, potassium, and sodium; one molar potassium chloride for aluminum and diethylene triamine penta acetic acid for manganese (System I), and 0.1 molar barium chloride (System II) to extract all the above in a single step. It was seen that barium chloride extracted more of exchangeable elements when compared to ammonium acetate. Paired t-test indicated that the difference between System I and II was significant with regard to bases and manganese. Plant growth expressed as volume was regressed on the soil properties measured in both the systems. The regression equation indicated that organic carbon, phosphorus, bases, aluminum and manganese measured using barium chloride contributed significantly to the variability in growth with an R 2 of 0.979, and the regression analysis was significant. None of the soil properties measured in System II showed any significant effect on growth. Considering the facts it is suggested to adopt barium chloride extraction, which is a simple single-step procedure that extracts all elements that contribute to the cation exchange capacity at field pH unlike ammonium acetate that is buffered at pH 7.

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“…sand + silt +clay +OM = 100%. Exchangeable A1 (Ex Al) was extracted by shaking 5 g of air-dried soil with 50 ml of 1 M KCI for 1 h. Aluminium in the filtered extract was determined colorimetrically using aluminon (Jayman & Sivasubramaniam, 1974). Buffered cation exchange capacity (CEC) was determined using a modification of the procedure of Okazaki et al (1962).…”

Section: Soilsmentioning

confidence: 99%

A rapid method for predicting the lime requirement of acidic temperate soils with widely varying organic matter contents. I. Development of the lime requirement model

Bailey¹,

Stevens²,

Kilpatrick³

1989

Journal of Soil Science

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SUMMARY A model to describe the shapes of soil pH‐CaCO3 neutralization curves is presented. The model can be used to predict lime requirement in soils with widely varying organic matter contents. Parameters of the model are predicted from the easily measured soil properties of sample density and initial pH. The results suggest that soil titratable acidity is primarily related to soil organic matter content, and that soil organic matter content may be predicted from measurements of soil sample density. The proposed method for predicting lime requirement should be superior to other established quick‐test methods for routine soil testing both in terms of speed and versatility.

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The use of ascorbic acid to eliminate interference from iron in the aluminon method for determining aluminium in plant and soil extracts

Cited by 41 publications

References 0 publications

Factors explaining variable lime responses in pastures: Calcium X zinc X phosphorus interactions

Factors explaining variable lime responses in pastures: Calcium X zinc X phosphorus interactions

Evaluation of Soil Extractants in Terms of Growth

A rapid method for predicting the lime requirement of acidic temperate soils with widely varying organic matter contents. I. Development of the lime requirement model

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