Saturday, 15 July 2006
148-15

Indicators of Soil Health: Rapid Assessment of Soil Quality Using Laboratory Procedures and VNIR Reflectance Spectroscopy.

Bianca N. Moebius1, Harold M. Van Es1, George Abawi1, David Wolfe1, Omololu J. Idowu2, Janice E. Thies3, Daniel J. Clune3, Robert R. Schindelbeck1, Ali Volkan Bilgili1, W. Dean Hively4, and Beth Gugino1. (1) Cornell Univ, Dept of Crop and Soil Sciences, 1015 Bradfield Hall, Ithaca, NY 14853, (2) Dept of Crop and Soil Sciences, Cornell Univ, 1015 Bradfield Hall, Ithaca, NY 14853, (3) Dept of Crop and Soil Sciences, Cornell Univ, Ithaca, NY 14853, (4) USDA-ARS Environmental Quality Laboratory, Building 007, Room 214, BARC-W, 10300 Baltimore Avenue, Beltsville, MD 20705

We are developing a soil health testing laboratory to offer rapid, inexpensive, scientifically meaningful, and agronomically useful tests performed as a public service. This study assessed physical, chemical, and biological soil properties for their usefulness as soil health indicators. Multiple controlled long-term experiments and on-farm soil management demonstration trials were used to establish a minimum data set of physical, chemical, and biological indicators of soil health for New York State, USA. These indicators were selected based on (i) their ability to detect changes resulting from soil management practices, (ii) cost of sampling and analysis, and (iii) functional relevance. These functions include processes such as root proliferation, aeration, water transmission and retention, chemical nutrition, microbial activity, long-term carbon storage, N-supplying capacity, and disease suppression. In addition, Visible/Near-InfraRed (VNIR) reflectance spectroscopy was evaluated as a method of rapid and very inexpensive assessment of integrated soil health. Calibrations between functional indicators and soil reflectance were developed by using cross-validation procedures under Partial Least Squares (PLS) regression and Multivariate Adaptive Regression Splines (MARS).

Back to 3.0W Sustainable Soils and Life on Land - Poster
Back to WCSS

Back to The 18th World Congress of Soil Science (July 9-15, 2006)