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http://dx.doi.org/10.5532/KJAFM.2018.20.2.166

Estimation and validation of the genetic coefficient of cv. Superior for the DSSAT-CSM  

Bak, Gyeryeong (Highland Agriculture Research Institute)
Lee, Gyejun (Highland Agriculture Research Institute)
Lee, Eunkyeong (Highland Agriculture Research Institute)
Publication Information
Korean Journal of Agricultural and Forest Meteorology / v.20, no.2, 2018 , pp. 166-174 More about this Journal
Abstract
Potato(Solanum tuberosum L.) is one of the major food crop in the world following rice, wheat, and maize. It is thus important to project yield predict of potato under climate change conditions for assessment of food security. A crop growth modelling is widely used to simulate crop growth condition and total yield of various crops under a given climate condition. The decision support system for agrotechnology transfer (DSSAT) cropping system model, which was developed by U.S. which package integrating several models of 27 different crops, have been used to project crop yield for the impact assessment of climate change on crop production. In this study, we simulated potato yield using RCP 8.5 climate change scenario data, as inputs to the DSSAT model in five regions of Korea. The genetic coefficients of potato cultivar for 'superior', which is one of the most widely cultivated potato variety in Korea were determined. The GenCalc program, which is a submodule of the DSSAT package, was used to determine the genetic coefficients for the superior cultivar. The values of genetic coefficients were validated using results of 39 experiments performed over seven years in five regions. As a case study, the potato yield was projected that total yields of potato across five regions would increase by 26% in 2050s but decrease by 17% in 2090s, compared with 2010s. These results suggested that the needs for cultivation and irrigation technologies would be considerably large for planning and implementation of climate change adaptation for potato production in Korea.
Keywords
DSSAT; Potato; RCP 8.5; Genetic coefficients;
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