Spatial variability of soil phosphorus, potassium and pH: evaluation of the potential for improving vineyard fertilizer management

摘要

Conventionally, fertilizer management of vines has been based on composite soil samples and n< account has been taken of variability of soil fertility. With the current availability of rapid technique for soil monitoring, it is possible to measure andestimate within-field variability. In this study,; quantitative analysis of soil phosphorus and potassium content as well as pH was carried out ii 2011 and 2013 in order to identify spatial variability in a 80 ha vineyard field. The results showed ; lowpotential for implementing site-specific management of phosphorus fertilizer but potential fo implementing site-specific management of potassium fertilizer and pH correction.