An improved methodology to evaluate crop salt tolerance from field trials

G. van Straten, A.C. de Vos, J. Rozema, B. Bruning and P.M. van Bodegom

Agricultural Water Management, 2019, vol. 213, issue C, 375-387

Abstract: The salt tolerance of crops is commonly expressed in descriptive parameters such as threshold or 50%-yield soil salinity and shape parameters describing the yield curve. Estimation by visual or simplified ordinary least squares (OLS) regression methods has multiple issues: parameter bias due to uncertainty in soil salinity, lack of independent estimates of the reference yield, questionable robustness of the threshold parameter and missing information about uncertainty and correlation of the parameter estimates. Here, we present a comprehensive OLS method together with an analysis of its statistical properties to alleviate and overcome such issues, on the basis of a numerical experiment that mimics observed yield responses to saline groundwater across a range of salinities in the experimental test facility Salt Farm Texel.

Keywords: Crop salinity tolerance; Parameter estimation; Salinization (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:213:y:2019:i:c:p:375-387

DOI: 10.1016/j.agwat.2018.09.008

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