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An assessment of the agronomic efficiency of partially acidulated phosphate rock fertilisers

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Abstract

The literature comparing the efficiency of partially acidulated phosphate rock fertilisers with that of a single or triple superphosphate is briefly summarised and found to be conflicting. Various theories purported to explain why partially acidulated phosphate rock products are as efficient are examined. An alternative hypothesis, which appears to reconcile the conflicting evidence, is presented. This depends in part on the dissolution of the phosphate rock component of a partially acidulated product in the soil; the factors influencing the dissolution of phosphate rock in the soil are reviewed in relation to the conflicting statements about the efficiency of partially acidulated phosphate rock products.

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Authors and Affiliations

  1. New Zealand Fertiliser Manufacturers Research Association, Hunters Corner, PO Box 23637, Auckland, New Zealand

    RC Stephen & LM Condron

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  1. RC Stephen
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  2. LM Condron
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Stephen, R., Condron, L. An assessment of the agronomic efficiency of partially acidulated phosphate rock fertilisers. Fertilizer Research 10, 269–282 (1986). https://doi.org/10.1007/BF01049357

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  • DOI: https://doi.org/10.1007/BF01049357

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