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Rice Production in Farmer Fields in Soil Salinity Classified Areas in Khon Kaen, Northeast Thailand

Author

Listed:
  • Yi Yang

    (Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan)

  • Rongling Ye

    (Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan)

  • Mallika Srisutham

    (Faculty of Food and Agricultural, Khon Kaen University, Khon Kaen 40002, Thailand)

  • Thanyaluck Nontasri

    (Land Development Department Regional 5, Khon Kaen 40000, Thailand)

  • Supranee Sritumboon

    (Land Development Department Regional 5, Khon Kaen 40000, Thailand)

  • Masayasu Maki

    (Faculty of Food and Agricultural Sciences, Fukushima University, Fukushima 960-1296, Japan)

  • Koshi Yoshida

    (Graduate School of Frontier Sciences, The University of Tokyo, Tokyo 113-8654, Japan)

  • Kazuo Oki

    (Faculty of Engineering, Kyoto University of Advanced Science, Kyoto 621-8555, Japan
    Institute of Industrial Science, The University of Tokyo, Tokyo 113-8654, Japan)

  • Koki Homma

    (Graduate School of Agricultural Science, Tohoku University, Sendai 980-8572, Japan)

Abstract

Northeast Thailand is the largest rice cultivation region in Thailand, but the rice yield there is quite low. Soil salinity is one of the major yield restricted factors, is derived from underground rock salt, and is predicted to expand in the future. This study focused on evaluating rice productivity related to salinity conditions in Khon Kaen Province, Northeast Thailand. The field investigations were conducted from 2017 to 2019 in farmer fields in severe, moderate, and slight soil salinity classes determined by the Land Development Department of Thailand. The soil salinity on the basis of the electric conductivity of saturated soil extract (ECe) varied year to year, which seemed to be associated with precipitation. The difference in soil salinity between classes was obvious only in the drought year 2018, and reflected in the rice yield, although severe drought devastated rice yield in some fields. Plenty of rainfall may have alleviated soil salinity and rice yield reduction in other years, causing differences in rice yield that were not significant among soil salinity classes. However, salinity level evaluation by the USDA based on ECe showed that rice yield was damaged depending on the level. This study indicates that ECe-based evaluation is recommended for soil salinity in relation to rice productivity. The spatial and temporal evaluation for rice production may benefit farmers. The results in this study also showed rice production largely varied even in similar salinity levels, implying that salinity damage can be alleviated by farmer management.

Suggested Citation

  • Yi Yang & Rongling Ye & Mallika Srisutham & Thanyaluck Nontasri & Supranee Sritumboon & Masayasu Maki & Koshi Yoshida & Kazuo Oki & Koki Homma, 2022. "Rice Production in Farmer Fields in Soil Salinity Classified Areas in Khon Kaen, Northeast Thailand," Sustainability, MDPI, vol. 14(16), pages 1-10, August.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:16:p:9873-:d:884720
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    References listed on IDEAS

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    1. Nalun Panpluem & Adnan Mustafa & Xianlei Huang & Shu Wang & Changbin Yin, 2019. "Measuring the Technical Efficiency of Certified Organic Rice Producing Farms in Yasothon Province: Northeast Thailand," Sustainability, MDPI, vol. 11(24), pages 1-16, December.
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    Cited by:

    1. Suneerat Srisopa & Peerapong Luamka & Saowanee Rattanawan & Khanitta Somtrakoon & Piyapatr Busababodhin, 2023. "Analyzing Spatial Dependence of Rice Production in Northeast Thailand for Sustainable Agriculture: An Optimal Copula Function Approach," Sustainability, MDPI, vol. 15(20), pages 1-21, October.

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