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Communications in Soil Science and Plant Analysis Volume 40, 2009 - Issue 1-6: Special Issue on the 10th International Symposium on Soil and Plant Analysis
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Original Articles

Barley Root Growth and Phosphorus Bioavailability in Soil Treated with Phosphate Rocks

Krisztina R. Végh Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences, Budapest, HungaryCorrespondence[email protected]
,
Erzsébet Osztoics Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences, Budapest, Hungary
,
Péter Csathó Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences, Budapest, Hungary
,
Tünde Takács Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences, Budapest, Hungary
,
András Lukács Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences, Budapest, Hungary
&
Julianna Csillag Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences, Budapest, Hungary
Pages 844-853 | Published online: 16 Mar 2009
 
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Abstract

The effects of five phosphate rocks (originating from Algeria, northern Florida, North Carolina, Senegal, and Morocco) with various phosphorus (P) solubilities on P bioavailability, root growth, and P uptake of spring barley crops were studied on an acidic sandy soil in microlysimeters, in a pot experiment and by dynamic simulation. Root length and P influx varied significantly, influenced by the P and calcium carbonate (CaCO3) content and reactivity of the P sources. Phosphate rock (PR) treatments enhanced root growth. The simulation results demonstrated the contribution of root hair formation and P mobilization by rhizosphere acidification in the increased acquisition efficiency of barley in PR‐treated soil.

ACKNOWLEDGMENT

The study was supported by Hungarian National Scientific Research Fund (OTKA) T 038046.

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