Mathematical Modeling of Crop Water Production Functions for Sugar Beet

IF 2 3区农林科学 Q2 AGRONOMY

Sugar Tech Pub Date : 2025-03-21 DOI:10.1007/s12355-025-01572-8

Serhat Ayas

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Abstract

Crop water production functions, which describe the relationship between yield and water use, are of great importance in determining the economic value of irrigation, identifying different irrigation strategies and determining optimum irrigation levels. The main objective of this study was to evaluate the performance of Stewart, Jensen, Minhas, Blank and Rao functions in predicting root yield in sugar beet. Field studies were carried out in 2019 and 2020 in Bursa Yenişehir Vocational School Production Area. Water stress sensitivity indices of crop water production functions were determined using ET and yield values in the first year. Root yield values simulated with crop water production functions were compared with root yield values measured in the field in 2020. Sensitivity indices of sugar beet to water at four different growth stages were determined using five different crop water production models. Considering the sensitivity indices of sugar beet to water in four different growth periods, it was determined that the yield formation period (Y) was the most sensitive to water. Yield formation (Y) period was followed by vegetative (V) and establishment (E) periods. The least water-sensitive period of sugar beet was the ripening (R) period. Jensen and Minhas models were recommended when the sensitivity indices to water stress calculated for four different growth stages of sugar beet were compared.

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甜菜作物水分生产函数的数学建模

作物水分生产函数描述了产量和水分利用之间的关系，对于确定灌溉的经济价值、确定不同的灌溉策略和确定最佳灌溉水平具有重要意义。本研究的主要目的是评价Stewart、Jensen、Minhas、Blank和Rao函数在甜菜根系产量预测中的表现。实地研究于2019年和2020年在布尔萨叶尼职业学校生产区进行。利用蒸散发和第一年的产量值确定了作物水分生产函数的水分胁迫敏感性指数。利用作物水分生产函数模拟的根系产量值与2020年田间实测的根系产量值进行了比较。采用5种不同的作物水分生产模型，测定了甜菜在4个不同生育期对水分的敏感性指数。综合4个不同生育期甜菜对水分的敏感性指标，确定产量形成期(Y)对水分最敏感。产量形成期(Y)之后是营养期(V)和成果期(E)。甜菜对水分最不敏感的时期是成熟期。在比较甜菜4个生育期水分胁迫敏感性指数时，推荐采用Jensen和Minhas模型。

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来源期刊

Sugar Tech AGRONOMY-

CiteScore

3.90

自引率

21.10%

发文量

145

期刊介绍： The journal Sugar Tech is planned with every aim and objectives to provide a high-profile and updated research publications, comments and reviews on the most innovative, original and rigorous development in agriculture technologies for better crop improvement and production of sugar crops (sugarcane, sugar beet, sweet sorghum, Stevia, palm sugar, etc), sugar processing, bioethanol production, bioenergy, value addition and by-products. Inter-disciplinary studies of fundamental problems on the subjects are also given high priority. Thus, in addition to its full length and short papers on original research, the journal also covers regular feature articles, reviews, comments, scientific correspondence, etc.