Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Acidification  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Effects of soil acidification and subsequent leaching on levels of extractable nutrients in a soil (1986)
    Springer
    Plant and soil 95 (1986), S. 327-336 
    Details
    ISSN: 1573-5036
    Keywords: Acidification ; Extractable micronutrients ; Fe ; Mn ; Zn ; Cu ; Extractable P ; Exchangeable cations ; Ca ; Mg ; K ; Na ; Mineral N
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effects of soil acidification (pH values from 6.5 to 3.8), and subsequent leaching, on levels of extractable nutrients in a soil were studied in a laboratory experiment. Below pH 5.5, acidification resulted in large increases in the amounts of exchangeable Al in the soil. Simultaneously, exchangeable cations were displayed from exchange sites and Ca, Mg, K and Na in soil solution increased markedly. With increasing soil acidification, increasing amounts of cations were leached; the magnitude of leaching loss was in the same order as the cations were present in the soil: Ca2+〉Mg2+〉K+〉Na+. Soil acidification appeared to inhibit nitrification since in the unleached soils, levels of NO 3 − clearly declined below pH 5.5 and at the same time levels of NH 4 + increased greatly. Significant amounts of NH 4 + and larger amounts of NO 3 − , were removed from the soil during leaching. Concentrations of NaHCO3-extractable phosphate remained unchanged between pH 4.3 and 6.0 but were raised at higher and lower pH values. No leaching losses of phosphate were detected. For the unleached soils, levels of EDTA-extractable Mn and Zn increased as the soil was acidified whilst levels of extractable Fe were first decreased and then increased greatly and those for Cu were decreased slightly between pH 6.5 and 6.0 and then unaffected by further acidification. Significant leaching losses of Mn and Zn were observed at pH values below 5.5 but losses of Fe were very small and those of Cu were not detectable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02374613
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Effects of soil acidification on the chemical extractability of Fe, Mn, Zn and Cu and the growth and micronutrient uptake of highbush blueberry plants (1985)
    Springer
    Plant and soil 84 (1985), S. 201-212 
    Details
    ISSN: 1573-5036
    Keywords: Acidification ; Blueberries ; Extractable micronutrients Fe Mn Zn Cu ; Extracting agents CaCl2 ; HCl DTPA EDTA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary The effects of soil acidification and micronutrient addition on levels of extractable Fe, Mn, Zn and Cu in a soil, and on the growth and micronutrient uptake of young highbush blueberry plants (Vaccinium corymbosum L. cv. Blueray) was investigated in a greenhouse study. Levels of 0.05M CaCl2-extractable Fe, Mn, Zn and Cu increased as the pH was lowered from 7.0 to 3.8. However, the solubility (CaCl2-extractability) of Fe and Cu was considerably less pH-dependent than that of Mn and Zn. With the exception of HCl-and DTPA-extractable Mn, micronutrients extractable with 0.1M HCl, 0.005M DTPA and 0.04M EDTA were unaffected or raised only slightly as the pH was lowered from 6.0 to 3.8. Quantities of Mn and Zn extractable with CaCl2 were similar in magnitude to those extractable with HCl, DTPA and EDTA whilst, in contrast, the latter reagents extracted considerably more Cu and Fe than did CaCl2. A fractionation of soil Zn and Cu revealed that soil acidification resulted in an increase in the CaCl2- and pyrophosphate-extractable fractions and a smaller decrease in the oxalate-extractable fraction. Plant dry matter production increased consistently when the soil pH was lowered from 7.0 to 4.6 but there was a slight decline in dry matter as the pH was lowered to 3.8. Micronutrient additions had no influence on plant biomass although plant uptake was increased. As the pH was lowered, concentrations of plant Fe first decreased and then increased whilst those of Mn, and to a lesser extent Zn and Cu, increased markedly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02143184
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...