SUCROSBEET: A SIMPLE MODEL FOR SIMULATING GROWTH AND DEVELOPMENT OF SUGAR BEET UNDER POTENTIAL AND NITROGEN-LIMITED CONDITIONS

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DEIHIMFARD REZA; NASSIRI MAHALLATI MEHDI; KOOCHEKI ALIREZA

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Journal: JOURNAL OF AGROECOLOGY (کشاورزی بوم شناختی) Year:2012 | Volume:2 | Issue:1 Page(s): 1-20

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Title

SUCROSBEET: A SIMPLE MODEL FOR SIMULATING GROWTH AND DEVELOPMENT OF SUGAR BEET UNDER POTENTIAL AND NITROGEN-LIMITED CONDITIONS

Author(s)

DEIHIMFARD REZA | NASSIRI MAHALLATI MEHDI | KOOCHEKI ALIREZA | Issue Writer Certificate

Keywords

SUGAR BEETQ3

MODELLINGQ3

SUCROSQ2

NITROGENQ4

Abstract

Crop simulation models have been widely used to simulate growth and development of crops under various production situations. SUGAR BEET is one of the most important field crops in Iran particularly in Khorasan province. This study aimed to modify SUCROS model (that only simulates potential and water-limited crop growth) for using under NITROGEN-limited conditions. Accordingly, a simple subroutine for NITROGEN balance was added to the previous version. So, the new model dubbed as SUCROSBEET, is an adapted version of the old one, including NITROGEN limitation. NITROGEN stress in the new model was defined through the NITROGEN nutrition index (NNI): the ratio of actual NITROGEN concentration and critical NITROGEN concentration in the plant. This paper describes the model and details of model calibration and testing using independent data sets of NITROGEN treatments (with fertilizer rates of 0-270 kgN ha-1) under varying environmental conditions. In general, the model responded well to NITROGEN stress in all the treatments. However, the model underestimated the growth at lower level of NITROGEN application and overestimated at higher levels. The simulated average yield was somehow similar to its observed value with root mean square error of 9 Mg ha-1. It is concluded that the modified model could be reasonably used to simulate SUGAR BEET yield under both potential and N-limited situations. Also, the enhancement of its capability is enabled the model to estimate yield gap and agro-zonning at a national scale.

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APA: Copy

DEIHIMFARD, REZA, NASSIRI MAHALLATI, MEHDI, & KOOCHEKI, ALIREZA. (2012). SUCROSBEET: A SIMPLE MODEL FOR SIMULATING GROWTH AND DEVELOPMENT OF SUGAR BEET UNDER POTENTIAL AND NITROGEN-LIMITED CONDITIONS. JOURNAL OF AGROECOLOGY (کشاورزی بوم شناختی), 2(1), 1-20. SID. https://sid.ir/paper/254711/en

Vancouver: Copy

DEIHIMFARD REZA, NASSIRI MAHALLATI MEHDI, KOOCHEKI ALIREZA. SUCROSBEET: A SIMPLE MODEL FOR SIMULATING GROWTH AND DEVELOPMENT OF SUGAR BEET UNDER POTENTIAL AND NITROGEN-LIMITED CONDITIONS. JOURNAL OF AGROECOLOGY (کشاورزی بوم شناختی)[Internet]. 2012;2(1):1-20. Available from: https://sid.ir/paper/254711/en

IEEE: Copy

REZA DEIHIMFARD, MEHDI NASSIRI MAHALLATI, and ALIREZA KOOCHEKI, “SUCROSBEET: A SIMPLE MODEL FOR SIMULATING GROWTH AND DEVELOPMENT OF SUGAR BEET UNDER POTENTIAL AND NITROGEN-LIMITED CONDITIONS,” JOURNAL OF AGROECOLOGY (کشاورزی بوم شناختی), vol. 2, no. 1, pp. 1–20, 2012, [Online]. Available: https://sid.ir/paper/254711/en

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