Predicting sugar beet leaf area index: evaluating performance of double sigmoid functions under different irrigation and plant density scenarios

Abstract The leaf area index (LAI) dynamics in sugar beet follow a double sigmoidal curve, modeled as the subtraction of two sigmoid functions. In this study, we examined the accuracy of 15 different sigmoid functions in describing the sugar beet LAI variation based on growing degree days (GDD) and...

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Autori principali:	Saba Hashempour Motlagh Shirazi, Fatemeh Razzaghi, Ali Shabani, Ali Reza Sepaskhah, Maryam Khozaei
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	Nature Portfolio 2025-12-01
Serie:	Scientific Reports
Soggetti:	Logistic-Richards functions Hill-Hill function Gompertz-Gompertz functions Water stress Growing degree days Planting methods
Accesso online:	https://doi.org/10.1038/s41598-025-28713-z
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