This means that the response of crop to P can be considerable in 86% of the arable area in Belgium. Therefore, the range of the crop response to P can be expanded to very low, low medium and high level of P, instead very low, low and medium reported by recent research (Bundy et al., 2005). This new finding is attributed to the large number of samples (about 2200 soil scan ha-1) used for adopting the fertilization. Furthermore, the VR strategy will be most profitable, where large differences in STP levels exist within a field, more specifically in fields having both low and high levels of soil