ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary The chemical behaviour of the sodium form of ethylenediamine di(o-hydroxyphenylacetic acid), Na2EDDHA, in a calcareous soil column was studied. The results show loss about 2/3 of the synthetic chelate in the soil, possibly due to microbial decomposition and/or fixation of EDDHA. The application of Na2EDDHA caused an increase in the amount of water-soluble forms of certain elements in the following decreasing order: Fe, Cu, Mn, Ni, Zn and Ca. The increase in the water-soluble forms of such elements is due possibly to the chelation of their insoluble compounds in the soil. The solubilization effect of Na2EDDHA and the subsequent movement of the elements in the soil solution resulted in a significant decrease in their amounts in the exchangeable and acid-soluble forms in the soil. In conclusion, the synthetic chelate of EDDHA underwent chemical reactions in the soil and caused changes in the ratio of certain elements in the various chemical forms.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01372816
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