ZIADI, Noura; MESSIGA, Aimé Jean; MOREL, Christian; JOUANY, Claire; VIRKAJARVI, Perttu; SINAJ, Sokrat; BELANGER, Gilles

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ZIADI, Noura
Soils and Crops Research and Development Centre

MESSIGA, Aimé Jean
Environmental and Resource Studies Program

MOREL, Christian
Interactions Sol Plante Atmosphère [UMR ISPA]

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Autre communication scientifique (congrès sans actes - poster - séminaire...)

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20th World Congress of Soil Science, 2014-06-08, Jeju. 2014

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Monitoring and managing soil P changes to improve P use efficiency and sustain agricultural production remains a major issue. Soil P budget has been used to characterize soil test P (STP) dynamics/changes in Asia, Europe, North America, and South America. However, few studies have been conducted on soil P budget vs. STP under grassland production. To analyze the stability of the relationship between STP and cumulative P budget over a large range of STP values as a result of long-term applications of varying P fertilizer rates in several grassland experiments in Europe and Canada. In five out of the six grassland production systems, a deflection point was observed in the relationship between STP and cumulative P budget. Above the deflection point, the relationship was linear, while below the deflection point, the relationship was not significant.< Leer menos

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P fertilization

soil and plant P tests

grassland

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Phosphorus budget as a tool to monitor soil P changes under grassland production

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