文章基本信息

标题：Phytoavailable phosphorus (P2O5) and potassium (K2O) in topsoil for apple orchards and vineyards, South Tyrol, Italy
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作者：Stefano Della Chiesa ; Giulio Genova ; Daniele la Cecilia 等
期刊名称：Journal of Maps
印刷版ISSN：1744-5647
出版年度：2019
卷号：15
期号：2
页码：555-562
DOI：10.1080/17445647.2019.1633962
出版社：Journal of Maps
摘要：Accurate fertilization management is a present-day challenge and can conciliate profitability and sustainability in agriculture production. This study presents topsoil concentrations of P 2 O 5 and K 2 O in apple orchards and vineyards in South Tyrol, Italy. Sixteen thousand georeferenced soil samples were collected and spatialized using ordinary local kriging. Measured average and maximum concentrations of P 2 O 5 were 260 and 1500 mg/kg, respectively, in apple orchards, and 280 and 880 mg/kg, respectively, in vineyards. Similarly, measured average and maximum concentrations of K 2 O were 210 and 1040 mg/kg, respectively, in apple orchards, and 250 and 820 mg/kg, respectively, in vineyards. Overall, K 2 O concentration was mostly within the recommended thresholds, while P 2 O 5 concentration was frequently higher than the target level for optimal production. The resulting maps (1:25,000 scale) of P 2 O 5 and K 2 O showed modest accuracy with RMSE of 115.7 and 78.3 mg/kg, respectively. These maps can support evidence-based decision making by multiple stakeholders.
关键词：Digital soil mapping ; sustainable agriculture ; permanent crops ; phosphorus ; potassium ; fertilization