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2023 Vol.56, Issue 4 Preview Page

Original research article

Life Cycle Assessment of Greenhouse Gas Emission of Rice Cultivation under Minimum Tillage in the Gimje, South Korea
Ju-Hyeon Jin1
,
Hyun-Cheol Jeong2
,
Sun-Il Lee3
,
Hyoung-Seok Lee3
,
Hye-Ran Park3
,
Ye-Seul Yu4
,
Jong-Mun Lee5
,
Yun-Ho Lee6
,
Hyo-Suk Gown3*
1Collaborative Research Course, Climate Change Assessment Division, National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea
2Agricultural Senior Researcher, Climate Change Assessment Division, National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea
3Agricultural Researcher, Climate Change Assessment Division, National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea
4Researcher, Climate Change Assessment Division, National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea
5Postdoctoral Researcher, Climate Change Assessment Division, National Institute of Agricultural Sciences, RDA, Wanju 55365, Korea
6Agricultural Researcher, Crop Production & Physiology Division, National Institute of Crop Science, Wanju 55365, Korea
*Corresponding Author
30 November 2023. pp. 300-312
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Abstract

The minimum tillage is a method of reducing energy consumption and greenhouse gas emissions by only tilling the part of areas where crops are planted. Until now, most studies have estimated greenhouse gas emissions only from the gases emitted during crop cultivation in rice paddy. However, greenhouse gases are also emitted from agricultural material (energy, fertilizers, pesticide, and other materials) inputs. Therefore, this study aims to comprehensively estimate greenhouse gas emissions from agricultural material inputs and minimum tillage conducted paddy during rice cultivation. The experiment was conducted in rice paddy from Gimje, South Korea, where conventional tillage and minimum tillage were implemented. Greenhouse gas emissions were obtained by direct measurement of methane (CH4) and nitrous oxide (N2O) emissions from rice paddy and calculation using life cycle assessment (LCA) for emissions from agricultural material input. The results showed that direct GWP during crop growth were 1.42 Mg CO2-eq. ha-1 in conventional tillage, and 1.02 Mg CO2-eq. ha-1 in minimum tillage. Greenhouse gas emissions from the input of agricultural materials were 0.84 Mg CO2-eq. ha-1 in conventional tillage and 0.63 Mg CO2-eq. ha-1 in minimum tillage. Minimum tillage (1.65 Mg CO2-eq. ha-1) was lower in the total greenhouse gas emissions (direct emissions + emissions from agricultural material inputs) than conventional tillage (2.26 Mg CO2-eq. ha-1). This is a result indicating that greenhouse gas emissions are greatly affected by direct emission in paddy and energy input, which could reduce greenhouse gas emissions when the minimum tillage was applied than the conventional tillage. It is expected that greenhouse gas emission reduction strategies in the agricultural sector could be reduced by applying minimum tillage to cropland and reducing the use of agricultural material.

Total greenhouse gas emission of conventional tillage and minimum tillage treatment during rice cultivation in paddy. The same letters indicate a not significant difference between treatment (p < 0.05, t-test). ns indicate a not significant.
Keywords
Agricultural materials
Methane
Nitrous oxide
Paddy
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Information
  • Publisher :Korean Society of Soil Science and Fertilizer
  • Publisher(Ko) :한국토양비료학회
  • Journal Title :Korean Journal of Soil Science and Fertilizer
  • Journal Title(Ko) :한국토양비료학회 학회지
  • Volume : 56
  • No :4
  • Pages :300-312
  • Received Date : 2023-07-20
  • Revised Date : 2023-11-20
  • Accepted Date : 2023-11-22
  • DOI :https://doi.org/10.7745/KJSSF.2023.56.4.300
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