ISSN:
1573-5036
Keywords:
Acid soil
;
Complexed metals
;
Copper
;
Iron oxides
;
Lime
;
Manganese oxides
;
Organic matter
;
Redistribution
;
Trace metals
;
Waterlogging
;
Zinc
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary The redistribution of zinc and copper in a soil as a result of waterlogging has been studied using selective extractants to remove metals held by specific mechanisms. Waterlogging over a period of 16 weeks resulted in a lowering of soluble, exchangeable and organically bound zinc and copper. There is a concomitant increase in the levels of these metals held by specific adsorption (acetic acid extractable) and by poorly ordered oxides (oxalate extractable). It is suggested that the breakdown of these oxides of iron and manganese, which is brought about by waterlogging, provides surfaces with high adsorptive capacity for zinc and copper. Addition of 1% dried grass or 1% lime to the soil caused an acceleration in metal redistribution. Some of the copper released was retained in the standing water, presumably as a soluble chelate. This was not the case with zinc.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02184204
