On the effect of storage and temperature on the exchangeable manganese in soil samples

Boken, Else

doi:10.1007/bf01373644

Cited by 36 publications

(8 citation statements)

References 3 publications

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“…Extractable Mn in soils not receiving Mn application increased when incubation temperatures were raised (Fujimoto and Sherman, 1946;Boken, 1952;Shuman, 1980;Reid and Racz, 1985). In organic soils, DTPA-extractable Mn increased almost threefold, while exchangeable Mn (NH4OAc) doubled with an increase in incubation temperature from 10 to 25°C (Reid and Racz, 1985).…”

Section: Introductionmentioning

confidence: 96%

Effects of temperature on extractable manganese and distribution of manganese among soil fractions

Tong

Rengel

Graham

1995

Communications in Soil Science and Plant Analysis

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Fertiliser manganese (Mn) does not have good residual value in calcareous soils in southern Australia. The interaction of biotic and abiotic factors determining availability of fertiliser Mn is not well understood. Effects of autoclaving and temperature of moist incubation on DTPA (diethylenetriaminepentaacetic acid)-extractable Mn and the distribution of Mn among soil fractions was tested in a sandy, calcareous Wangary soil. In the topsoil receiving 10 or 40 mg Mn/kg, higher incubation temperature (26°C) accelerated a decrease in DTPA-Mn and weakly adsorbed Mn during 0-14 d incubation compared with the lower temperature (15/10°C, 12 h each) regardless of whether soil was autoclaved or not. In a Wangary soil mixed in 1:1 ratio of topsoil to subsoil and supplemented with Mn, higher temperature during soil incubation resulted in higher DTPA-Mn compared to the lower incubation temperature after 36 d. The decrease in weakly adsorbed Mn with incubation time was mainly due to: (i) Mn fixation by chemisorption on calcite, and (ii) Mn oxidation by soil microflora; the higher the incubation temperature, the quicker the fixation. Autoclaving of the soil fertilised with Mn caused the amounts of Mn in various soil fractions to remain almost constant throughout the 24-d incubation period regardless of the incubation 1. Present address:

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Section: Introductionmentioning

confidence: 96%

Effects of temperature on extractable manganese and distribution of manganese among soil fractions

Tong

Rengel

Graham

1995

Communications in Soil Science and Plant Analysis

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“…This can involve air drying, freezing, or refrigeration, while samples can also be effectively "stored" at ambient temperature for hours to days during transport from the field site to the laboratory (or to suitable refrigeration or drying facilities). This can influence subsequent concentrations of extractable inorganic nutrients, including NH 4 and NO3 (Birch, 1960;Mulvaney, 1996), P0 4 (Sparling et al, 1985;, K (Gupta and Rorison, 1974;Luo and Jackson, 1985), Mn (Boken, 1952;Nelson, 1977), and S0 4 (Comfort et al, 1991).…”

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confidence: 99%

Short‐Term Changes in Extractable Inorganic Nutrients during Storage of Tropical Rain Forest Soils

Turner

Romero

2009

Soil Science Soc of Amer J

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The nutrient status of tropical forests is commonly assessed by measuring inorganic nutrients extracted from soil, yet samples from remote research sites may be stored for prolonged periods of time before analysis. We assessed the influence of soil storage conditions on extractable nutrients in three lowland tropical forests soils from the Republic of Panama. The soils spanned a strong rainfall gradient and contained contrasting chemical and physical properties. Storage treatments were: (i) room temperature (22°C in the dark), (ii) refrigerated (4°C in the dark), (iii) air dried (10 d at 22°C and 55% humidity), and (iv) frozen (−35°C). Ammonium and NO3 were extremely unstable and concentrations changed considerably within hours of sampling. Phosphate extracted by anion‐exchange membranes also changed rapidly following sampling, although cations (Ca, K, and Mg) extracted in Mehlich‐3 solution were less influenced by storage. Soil pH declined slowly in all samples during field‐moist storage (4 and 22°C). Freezing and air drying generally caused significant changes in extractable nutrients, although the effects varied among soils and nutrients. We therefore conclude that inorganic nutrients should be extracted from tropical forest soils within 24 h of sampling, and preferably on the day of sampling for N fractions, to ensure that values represent field conditions. Where this is not possible, rapid air drying or storage of field‐moist samples may be acceptable for some measurements (e.g., PO4, cations, pH), but are unlikely to provide realistic measurements of inorganic N.

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“…Boken (1958) found much greater increases during this period, from 29 per cent to 76 per cent for different soils, the increase continuing, though at a decreasing rate, during the whole 24-hour period of investigation. A similar increase in extractable Mn occurs on storage of soil (Boken, 1952;Zende 1954) and soil A had already been in storage in the air dry condition for more than a year. Hamnes and Berger (1960) have shown that the Mn released on air d ing comes from organic soil Mn.…”

Section: E Q E R I M T a L Materials And Methodsmentioning

confidence: 55%

The Extractable Manganese of Soil

Page¹

1964

Journal of Soil Science

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Exchangeable manganese extracted from soil with calcium nitrate solutions shows some increase as the period of extraction is prolonged. For a given time of extraction the exchangeable manganese of soil behaves as a typical divalent cation obeying simple exchange theory, contrary to a previous report in the literature. Soil particles discriminate between calcium and manganese ions, calcium ions being held more firmly.

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On the effect of storage and temperature on the exchangeable manganese in soil samples

Cited by 36 publications

References 3 publications

Effects of temperature on extractable manganese and distribution of manganese among soil fractions

Effects of temperature on extractable manganese and distribution of manganese among soil fractions

Short‐Term Changes in Extractable Inorganic Nutrients during Storage of Tropical Rain Forest Soils

The Extractable Manganese of Soil

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