The influence of the amount and the origin of calcium carbonates on the isotopically exchangeable phosphate in calcareous soils

A - Papers appearing in refereed journals

Talibudeen, O. and Arambarri, P. 1964. The influence of the amount and the origin of calcium carbonates on the isotopically exchangeable phosphate in calcareous soils. The Journal of Agricultural Science. 62 (1), pp. 93-97.

AuthorsTalibudeen, O. and Arambarri, P.
Abstract

The kinetics of the isotopic exchange of phosphate ions in soils with and without phosphate added in the laboratory were examined in relation to the amount and origin of the CaCO3 they contained. The isotopic exchange index, ‘Pr/Pe’, and the recovery of added phosphate were inversely proportional to carbonate content in soils containing carbonates of similar geological origin; soils from the Lower Lias showed the biggest change in Pr/Pe with carbonate content.In soils from the Cretaceous Chalk, the first-order rate of isotopic exchange of the ‘slow’ phosphate fraction was constant. It increased to a larger but constant value in the soils incubated for 6 months after adding phosphate in the laboratory. This rate constant is therefore specific to the calcium phosphates in a group of soils derived from the same calcareous parent material and with similar phosphate manuring.

Year of Publication1964
JournalThe Journal of Agricultural Science
Journal citation62 (1), pp. 93-97
Digital Object Identifier (DOI)doi:10.1017/S0021859600059839
Open accessPublished as green open access
Publisher's version
ISSN00218596
0021-8596
PublisherCambridge University Press
Cambridge University Press (CUP)

Permalink - https://repository.rothamsted.ac.uk/item/8w69w/the-influence-of-the-amount-and-the-origin-of-calcium-carbonates-on-the-isotopically-exchangeable-phosphate-in-calcareous-soils

7 total views
3 total downloads
0 views this month
0 downloads this month
Download files as zip