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2023 Vol.65, Issue 4
Reduction Efficiency Analysis of Furrow Vegetation and PAM (Polyacrylamide) Mulching for Non-Point Source Pollution Load from Sloped Upland During Farming Season

경사밭 고랑 식생 및 PAM (Polyacrylamide) 멀칭에 따른 영농기 비점오염 저감효과 분석

So-Jin Yeoba
,
Min-Kyeong Kimb
,
Nan-Hee Anc
,
Soon-Kun Choid†
엽 소진a
,
김 민경b
,
안 난희c
,
최 순군d†
aResearch Scientist, Climate Change Assessment Division, National Institute of Agricultural Sciences
bSenior Researcher, International Technology Cooperation Center (ITCC), Technical Cooperation Bureau
cSenior Researcher, Climate Change Assessment Division, National Institute of Agricultural Sciences
dResearch Scientist, Climate Change Assessment Division, National Institute of Agricultural Sciences
a국립 농업 과학원 기후 변화 평가과 연구 과학자
b기술협력국 국제기술협력센터(ITCC) 선임연구원
c국립농업과학원 기후변화평가과 선임 연구원
d국립 농업 과학원 기후 변화 평가과 연구 과학자
† Corresponding author Tel.: +82-63-238-2504, Fax: +82-63-238-3823 E-mail: soonkun@korea.kr
2023. pp. 1-10
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Abstract

As a result of climate change, non-point source pollution (NPS) from farmland with the steep slope during the rainy season is expected to have a significant impact on the water system. This study aimed to evaluate the effect of furrow mulching using alfalfa and PAM (Polyacrylamide) materials for each rainfall event, while considering the load characteristics of NPS. The study was conducted in Wanju-gun, Jeollabuk-do, in 2022, with a testbed that had a slope of 13%, sandy loam soil, and maize crops. The testbed was composed of four plots: bare soil (Bare), No mulching (Cont.), Vegetation mulching (VM), and PAM mulching (PM). Runoff was collected from each rainfall event using a 1/40 sampler and the NPS load was calculated by measuring the concentrations of SS, T-N, T-P, and TOC. During farming season, the reduction efficiency of NPS load was 37.1~59.5% for VM and 38.2~75.7% for PM. The analysis found that VM had a linear regression correlation (R2=0.28~0.86, P-value=0.01~0.1) with elapsed time of application, while PM had a quadratic regression correlation (R2=0.35~0.80, P-value=0.1). These results suggest that the selection of furrow mulch materials and the appropriate application method play a crucial role in reducing non-point pollution in farmland. Therefore, further studies on the time-series reduction effect based on the application method are recommended to develop more effective preemptive reduction technologies.

Keywords
Monitoring
sloped upland
NPS pollution
furrow mulching
farming season
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Information
  • Publisher :The Korean Society of Agricultural Engineers
  • Publisher(Ko) :한국농공학회
  • Journal Title :Journal of Korean Society of Agricultural Engineers
  • Journal Title(Ko) :한국농공학회논문집
  • Volume : 65
  • No :4
  • Pages :1-10
  • Received Date : 2023-02-24
  • Revised Date : 2023-04-21
  • Accepted Date : 2023-04-24
  • DOI :https://doi.org/10.5389/KSAE.2023.65.4.001
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