Agricultural Practices and Spatial Variability of Phosphorus in Soils
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Phosphorus (P) is an important nutrient for plant growth. However, excessive applications of P to agricultural soils increase the loss of this element through runoff, contributing to water eutrophication. It is therefore important to have a better understanding of the spatial variability (SV) of P available to crops, in order to improve the economic use of phosphate fertilizers and the sustainability of the farming enterprise, while reducing P losses. The general objective of this doctoral thesis was to evaluate the SV of available soil P under different agroecosystems [young grassland (JP) vs...
Phosphorus (P) is an important nutrient for plant growth. However, excessive applications of P to agricultural soils increase the loss of this element through runoff, contributing to water eutrophication. It is therefore important to have a better understanding of the spatial variability (SV) of P available to crops, in order to improve the economic use of phosphate fertilizers and the sustainability of the farming enterprise, while reducing P losses. The general objective of this doctoral thesis was to evaluate the SV of available soil P under different agroecosystems [young grassland (JP) vs old grassland (AP) and conventional tillage (CT) vs direct seeding (DS)] using statistical and geostatistical tools for agri-environmental recommendationsa in precision agriculture.
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