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In situ measurement of soil chemical composition by near-infrared spectroscopy: a tool toward sustainable vineyard management
journal contribution
posted on 2023-05-17, 20:42 authored by Cozzolino, D, Cynkar, WU, Robert Dambergs, Shah, N, Smith, PThis study evaluated an in-field near-infrared (NIR) instrument to predict the contents of total nitrogen (TN), organic carbon (OC), potassium (K), sulfur (S), phosphorus (P), pH, and electric conductivity (EC) in soil vineyard samples (n = 70) sourced from three wine regions of Australia. Samples were analyzed using a portable NIR spectrophotometer (ASD FieldSpec III, 350-1800 nm). Partial least squares (PLS) regressions yield a coefficient of determination in calibration (R2) and a standard error in cross validation (SECV) of 0.74 (0.03) for TN, 0.92 (2.19) for S, 0.81 (0.42) for OC, 0.70 (109.2) for K, 0.84 (0.03) for EC, 0.83 (0.44) for pH, and 0.69 (24.6) for P, respectively. This study showed that it is possible to measure soil chemical properties in the vineyard, and the main advantages of this approach will be the speed, low cost, and ability to better manage and monitor soil fertility.
History
Publication title
Communications in Soil Science and Plant AnalysisVolume
44Issue
10Pagination
1610-1619ISSN
0010-3624Department/School
Tasmanian Institute of Agriculture (TIA)Publisher
Taylor & Francis IncPlace of publication
United StatesRights statement
Copyright 2013 Taylor & FrancisRepository Status
- Restricted