The Use of the WOFOST Model to Simulate Water-Limited Yield of Early Potato Cultivars

Bogdan Kulig , Barbara Skowera , Agnieszka Klimek-Kopyra , Stanisław Kołodziej , Wiesław Grygierzec

Abstract

In this work, an attempt was made to use the WOFOST (WOrld FOod Studies) model to simulate the potential and water-limited yield of early potato cultivars Lord and Denar. Data from cultivar experiments carried out at the Polish Research Centre for Cultivar Testing in 2004–2013 were used in the study. The Lord cultivar yielded 22.4–67.8 t fresh tuber weight per ha and 3.8–11.5 t ha−1 dry tuber weight during the study period. The highest tuber yields (over 10 t ha−1 dry weight) were obtained in 2009, 2011 and 2012, and the lowest in 2005 (3.8 t ha−1) and 2006 (2.65 t ha−1). The water-limited tuber yield simulated by WOFOST ranged from 3.6 to 10.9 t ha−1 dry weight and was about 0.45 t ha−1 higher on average than the actual yield. The planting period each year was between days 104 and 120 of the year, and harvesting took place between days 216 and 232. Water availability was a factor limiting the yield. The yield limited by water deficiency was 38.7% lower (irrespective of the cultivar) than the potential yield. The WOFOST model was sensitive to water deficiency, and the simulated (water-limited) yields were close to the actual yield or showed a clear downward trend indicating evident rainfall shortages in 2005 and 2006.
Author Bogdan Kulig (FoAE / IoPP)
Bogdan Kulig,,
- Institute of Plant Production
, Barbara Skowera (FoEEaLS / DoECaAP)
Barbara Skowera,,
- Department of Ecology, Climatology and Air Protection
, Agnieszka Klimek-Kopyra (FoAE / IoPP)
Agnieszka Klimek-Kopyra,,
- Institute of Plant Production
, Stanisław Kołodziej
Stanisław Kołodziej,,
-
, Wiesław Grygierzec (FoAE / RE-KSM)
Wiesław Grygierzec,,
-
Journal seriesAgronomy, [Agronomy], ISSN 2073-4395, e-ISSN 2073-4395, (N/A 100 pkt)
Issue year2020
Vol10
No1
Pages1-10
Publication size in sheets0.5
Article number81
Keywords in EnglishWOFOST; potato; stages of development; meteorological conditions
ASJC Classification1102 Agronomy and Crop Science
DOIDOI:10.3390/agronomy10010081
URL https://www.mdpi.com/2073-4395/10/1/81/pdf
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
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The Use of the WOFOST Model to Simulate Water-Limited Yield of Early Potato Cultivars 640,42 KB
Score (nominal)100
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.272; WoS Impact Factor: 2018 = 2.259 (2)
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FinansowanieThis work was supported by the Ministry of Science and Higher Education of the Republic of Poland.
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