ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary A highly calcareous clay soil was treated with six iron chelates, those formed by RA 155, RA 156, RA 157, RA 159, ATA or HEG, and then extracted with an aqueous solution after intervals of up to 30 days. About 80% of ‘total’ RA 155 was recovered at each sampling time, but after 15 days approximately one-third of the iron in it had been replaced by calcium. Some of the Fe-RA 156 and Fe-RA 159 was sorbed by the clay, but no calcium was found to have replaced iron chelated with RA 156, RA 157 or RA 159. The four chelates of the RA series were labelled with Fe59. The amount of isotopic exchange taking place between the Fe59 and soil iron was found to be negligible. A very low percentage of Fe-ATA and Fe-HEG was recovered from the soil. Approximately 50% of the Fe-ATA was sorbed by the clay, and in the remainder the chelated iron was replaced by calcium. The cause of the loss of Fe-HEG could not be determined.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01394265
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