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Influence of soil reaction on phosphorus content and dynamics in grapevine (Vitis vinifera c.) was investigated on the variety Sauvignon blanc in the Plešivica wine-growing region (North-western Croatia) in 2007. The trial was set up on three vitisol subtypes: dystric cambisol (pH _KCl 3.75), pseudogley (pH _KCl 4.68) and rendzina on marl (pH _KCl 7.25). Equal fertilization and vine protection were applied in all three vineyards. To determine the level and dynamics of phosphorus in plant material, leaf samples were taken three times in the course of the growing period: at the flowering and veraison stages and at the end of the growing period. Statistical methods used in the present study included correlation and regression/analysis of variance. Regression analysis revealed that vine leaf phosphorus content increases with increasing the soil reaction pH; it starts with 0.02% for each pH unit at the flowering stage and …