Phosphorus budget as a tool to monitor soil P changes under grassland production
Langue
en
Autre communication scientifique (congrès sans actes - poster - séminaire...)
Ce document a été publié dans
20th World Congress of Soil Science, 2014-06-08, Jeju. 2014
Résumé en anglais
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, ...Lire la suite >
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.< Réduire
Mots clés en anglais
P fertilization
soil and plant P tests
grassland
Origine
Importé de halUnités de recherche