Effects of lime on the residual effectiveness of phosphate in acid soils [white clover; Trifolium repens; yields; uptake]
1989
Holford, I.C. (New South Wales Agriculture and Fisheries, Tamworth (Australia). Agricultural Research Centre)
Effectiveness was measured in terms of the yield and P uptake of white clover herbage in a glasshouse experiment. Lime increased yields on the majority of soils, whether phosphate was applied or not. Lime increased the uptake of phosphate applied 9 months previously in all but 2 soils, and it had a more beneficial or less detrimental effect on the uptake of old phosphate than of fresh phosphate in 9 of the 14 soils tested. Because lime usually increases the uptake of soil phosphate but often depresses the uptake and effectiveness of fertilizer phosphate, the more beneficial effect of lime on phosphate residues is consistent with their partial transformation into compositions resembling native soil phosphates.
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