WHEATPOT: A SIMPLE MODEL TO SIMULATE GRAIN YIELD POTENTIAL OF SPRING WHEAT I- MODEL DESCRIPTION AND EVALUATION

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ANDARZIAN B.; BAKHSHANDEH ABD ALMAHDI; BANAIN M.; EMAM Y.; FATHI GHODRAT ELAH; AALAMI SAEID KH.

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Journal: Iranian Journal of Crop Sciences Year:2007 | Volume:9 | Issue:2 (34) Page(s): 109-124

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Title

WHEATPOT: A SIMPLE MODEL TO SIMULATE GRAIN YIELD POTENTIAL OF SPRING WHEAT I- MODEL DESCRIPTION AND EVALUATION

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Keywords

MODELINGQ2

YIELD POTENTIALQ3

WHEATQ3

DRY MATTERQ3

GRAIN YIELDQ3

MATURITYQ2

Abstract

A simple mechanistic crop growth simulation model “WheaPot” was developed for simulating site-specific WHEAT YIELD POTENTIAL. The model simulates critical phonological stages and DRY MATTER production as a function of temperature and solar radiation. Crop aspects of the model including developmental stages, DRY MATTER production and GRAIN YIELD are modulated in sub-models. The model requires inputs of site mean monthly weather data (minimum and maximum temperatures inoC) and photosynthetically active radiation (PAR in MJ m-2), and plant characteristics such as sowing date, required growing degree days (GDD) for vegetative and reproductive phases, radiation use efficiency (RUE in g MJ-1), and harvest index (HI). The model was verified using different experiments, which were carried out in several locations in Khuzestan province in 2003-2004 and 2004-2005 growing seasons. Comparison of simulated and measured values under non-limiting conditions indicated satisfactory performance of the model in predicting anthesis and MATURITY dates, and a fair prediction of DRY MATTER production and GRAIN YIELD with root mean square error (RMSE), 3.5 d, 4 d, 0.65 t ha-1 and 1.69 t ha-1, respectively. The model proved as a useful tool for a rough estimation of WHEAT YIELD POTENTIAL at regional level where there is no access to daily weather data.

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APA: Copy

ANDARZIAN, B., BAKHSHANDEH, ABD ALMAHDI, BANAIN, M., EMAM, Y., FATHI, GHODRAT ELAH, & AALAMI SAEID, KH.. (2007). WHEATPOT: A SIMPLE MODEL TO SIMULATE GRAIN YIELD POTENTIAL OF SPRING WHEAT I- MODEL DESCRIPTION AND EVALUATION. IRANIAN JOURNAL OF CROP SCIENCES, 9(2 (34)), 109-124. SID. https://sid.ir/paper/389752/en

Vancouver: Copy

ANDARZIAN B., BAKHSHANDEH ABD ALMAHDI, BANAIN M., EMAM Y., FATHI GHODRAT ELAH, AALAMI SAEID KH.. WHEATPOT: A SIMPLE MODEL TO SIMULATE GRAIN YIELD POTENTIAL OF SPRING WHEAT I- MODEL DESCRIPTION AND EVALUATION. IRANIAN JOURNAL OF CROP SCIENCES[Internet]. 2007;9(2 (34)):109-124. Available from: https://sid.ir/paper/389752/en

IEEE: Copy

B. ANDARZIAN, ABD ALMAHDI BAKHSHANDEH, M. BANAIN, Y. EMAM, GHODRAT ELAH FATHI, and KH. AALAMI SAEID, “WHEATPOT: A SIMPLE MODEL TO SIMULATE GRAIN YIELD POTENTIAL OF SPRING WHEAT I- MODEL DESCRIPTION AND EVALUATION,” IRANIAN JOURNAL OF CROP SCIENCES, vol. 9, no. 2 (34), pp. 109–124, 2007, [Online]. Available: https://sid.ir/paper/389752/en

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