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Re-examination of the standard cultivation practices of rice in response to climate change in Korea

  • Woonho Yang
  • Hyeoun Suk Cho
  • Mihyang Kim
  • Ki Yeong Seong
  • Tae Seon Park
  • Myung Chul Seo
  • Hang Won Kang
Review Article

Abstract

The impact of climate change has been simulated or estimated to bring about yield decline and quality deterioration of rice in Korea, a temperate country. To cope with these negative impacts, here we propose likely changes in the standard cultivation practices of rice in consideration of the current information on the progress/prediction of climate change and related physiological aspects of rice. Shifting grain-filling period could be a promising choice to optimize temperature for rice grain-filling, a crucial growth stage to productivity, hence providing rice plants with sufficient duration and solar radiation for the period. This choice, however, shortens days to flowering by the additive combined effects of high temperature by delayed transplanting, temperature rise itself by climate change, and accelerated phase change of rice by high temperature and short day-length. These combined effects may delay the time of transplanting in a great extent, hence reducing biomass accumulation of rice before flowering.

In these conditions, recovering decreased biomass production is the key concern for rice productivity. This includes raising healthy seedlings by omitting the covering process, dense planting, and nutrient management to enhance plant’s uptake activity. Current standard water management, especially mid-term drainage and intermittent irrigation, would have more importance in the future since they mitigate methane emission from the paddy. Field monitoring for weeds and pests would be an important first step to identify newly developing or thriving species for establishing subsequent controlling strategies. Earlier weed control should be emphasized through adjusting time of herbicide application.

Key words

climate change rice standard cultivation practice 

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Copyright information

© Korean Society of Crop Science and Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Woonho Yang
    • 1
  • Hyeoun Suk Cho
    • 1
  • Mihyang Kim
    • 1
  • Ki Yeong Seong
    • 1
  • Tae Seon Park
    • 1
  • Myung Chul Seo
    • 1
  • Hang Won Kang
    • 1
  1. 1.Crop Environment Research DivisionNational Institute of Crop Science, Rural Development AdministrationSuwonRepublic of Korea

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