Investigation of the soil properties that affect Olsen P critical values in different soil types and impact on P fertiliser recommendations

A - Papers appearing in refereed journals

Tandy, S., Hawkins, J. M. B., Dunham, S. J., Hernandez, J. M. B., Granger, S. J., Yuan, H., McGrath, S. P. and Blackwell, M. S. A. 2020. Investigation of the soil properties that affect Olsen P critical values in different soil types and impact on P fertiliser recommendations. European Journal of Soil Science. https://doi.org/10.1111/ejss.13082

AuthorsTandy, S., Hawkins, J. M. B., Dunham, S. J., Hernandez, J. M. B., Granger, S. J., Yuan, H., McGrath, S. P. and Blackwell, M. S. A.
Abstract

Optimization of phosphorus (P) fertiliser use is desired to ensure more sustainable use of fertiliser, economic food production and reduction of eutrophication of water bodies. Presently, the Olsen P values on which fertiliser recommendations are based to achieve optimum yield are frequently the same for all soils. The aim of this study was to identify the properties of different soils that affect their critical Olsen P values in order to develop better, soil specific P fertiliser recommendations. A pot experiment using 10 soils with low available P with different P additions was carried out to investigate the impact of wide-ranging soil properties on the relationship between P addition, resultant Olsen P values and yield response of ryegrass to Olsen P values. The relationship between added P and Olsen P varied greatly between the individual soils. These relationships were affected by pH, manganese oxide, crystalline aluminium oxide and amorphous iron oxide contents of the soil. Different soils had widely varying critical Olsen P values for ryegrass. However, these could not be related to the measured soil properties. Fertiliser recommendations and critical values for optimum yield of ryegrass based on the Olsen P test should be soil specific. The complexity and lack of clarity over which combination of soil properties governs critical Olsen P values calls for further investigation with more soil types and additional soil property measurements to elucidate the different factors controlling critical Olsen P values in different soils.

KeywordsAvailable P ; Critical P; Fertiliser; Olsen P; Phosphorus; Plant nutrients; Soil properties; Soils
Year of Publication2020
JournalEuropean Journal of Soil Science
Digital Object Identifier (DOI)https://doi.org/10.1111/ejss.13082
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
European Union
Funder project or codeOptimisation of nutrients in soil-plant systems: Determining how phosphorus availability is regulated in soils
S2N - Soil to Nutrition - Work package 1 (WP1) - Optimising nutrient flows and pools in the soil-plant-biota system
S2N - Soil to Nutrition - Work package 2 (WP2) - Adaptive management systems for improved efficiency and nutritional quality
S2N - Soil to Nutrition - Work package 3 (WP3) - Sustainable intensification - optimisation at multiple scales
Agri-tech Cornwall
Supplemental file
Output statusPublished
Publication dates
Online09 Jan 2021
Publication process dates
Accepted29 Dec 2020
PublisherWiley
ISSN1351-0754

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