A practical guide to estimating the light extinction coefficient with nonlinear models-a case study on maize.

ABSTRACT:

Background

The fraction of intercepted photosynthetically active radiation (fPARi) is typically described with a non-linear function of leaf area index (LAI) and k, the light extinction coefficient. The parameter k is used to make statistical inference, as an input into crop models, and for phenotyping. It may be estimated using a variety of statistical techniques that differ in assumptions, which ultimately influences the numerical value k and associated uncertainty estimates. A systematic search of peer-reviewed publications for maize (Zea Mays L.) revealed: (i) incompleteness in reported estimation techniques; and (ii) that most studies relied on dated techniques with unrealistic assumptions, such as log-transformed linear models (LogTLM) or normally distributed data. These find

SUBMITTER: Lacasa J 

PROVIDER: S-EPMC8196512 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature