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2018 Vol.51, Issue 4 Preview Page

Original research article

Micro-sprinkler Irrigation Uniformity as Affected by Different Water Pressure and Outlet Intervals
Sangho Jeon1
,
Seonah Hwang1
,
Yeonkyu Sonn1
,
Byungkeun Hyun1
,
Woori Go1
,
Sungang Yun1
,
Kyunghwa Han1*
,
,
,
,
,
,
1Soil and Fertilizer Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju, Jeonbuk 55365, Korea
*Corresponding Author
30 November 2018. pp. 666-676
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Abstract

This study carried out to evaluate the water distribution uniformity of micro-sprinkler to improve water utilization efficiency. The water quantity and the water pressure were measured according to the spacing of micro-sprinkler and adjusting the applied water pressure. The results showed that the spacing of the micro-sprinklers a decisive influence on the distribution uniformity, but the change in hydraulic pressure did not have a significant effect. The water quantity was reduced by 22.7 ± 1.6 % when the water pressure dropped 100 kPa. Each micro-sprinkler has different spray pattern. The wetted radius was measured about 4 m. A peak was found within a meter radius from the center of the micro-sprinkler and gentle slope between 2 - 4 m. The appropriate spacing is 2 - 4 m depend on micro-sprinkler and purpose of the system. The results would be used in micro-sprinkler system guideline and design for best water distribution uniformity.

Spray distribution according to the hydraulic pressure of micro-sprinkler.

Keywords
Micro-sprinkler
Discharge uniformity
Hydraulic pressure loss
Irrigation uniformity

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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 : 51
  • No :4
  • Pages :666-676
  • Received Date : 2018-11-16
  • Revised Date : 2018-12-03
  • Accepted Date : 2018-12-05
  • DOI :https://doi.org/10.7745/KJSSF.2018.51.4.666
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