Micro-sprinkler Irrigation Uniformity as Affected by Different Water Pressure and Outlet Intervals

Jeon, Sang-Ho; Hwang, Sun‐Goo; Sonn, Yeon-Kyu; Hyun, Byung-Keun; Go, Woo-Ri; Yun, Seok Kyu; Han, Kyung-Hwa

doi:10.7745/kjssf.2018.51.4.666

Cited by 3 publications

(4 citation statements)

References 6 publications

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“…예를 들면 ISO의 CV (Ryu et al, 1994;Park et al, 2012). 또한 같은 엽체류에 이용되는 스프 링클러와 비교하여도 (단동형하우스에 분수호스 2줄과 미니스프링클러를 2 m간격으로 1줄 설치를 가정함) 분수호 스가 미니스프링클러 보다 시간당 유량이 2 -8배 많게 나타났다 (Jeon et al, 2018). (Nam and Kim, 2007;Nam et al, 2012b;Jeon et al, 2018).…”

Section: Methodsunclassified

“…또한 어떤 관수방법을 사용함에 따라 균일도에 큰 차이가 있다. 우선 점적관수는 높은 관수 균일도를 나타내며, 집중적으로 많 은 연구가 이루어진 반면 (Wu and Gitlin, 1983;Nam and Kim, 2007;Hezarjaribi et al, 2008;Nam et al, 2012a), 분 수호스와 살수관수는 (미니스프링클러) 상대적으로 낮은 관수 균일도를 보이며 몇몇 연구만 이루어 졌다 (Topak et al, 2005;Nam and Kim, 2007;Jeon et al, 2018). (Nam and Kim, 2007;MAFRA, 2017).…”

Section: Introductionunclassified

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Evaluation of the Uniformity and Distribution of Water Spray Due to Type of Lay Flat Sprinkler Hose and Pumping Pressure

Jeon

Han

Hyun

et al. 2019

Korean J. Soil. Sci. Fert.

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Lay flat sprinkler hoses are widely use in S. Korea due to its reasonable price and flexibility. However, it applies a lot of water for a short time in a field that potentially causing unbalanced irrigation. In addition, there have been not many studies on characteristics such as irrigation uniformity. In this regards, the purpose of this study was to provide fundamental data for the design and operation of lay flat sprinkler by evaluating the irrigation uniformity and the watering pattern according to the change of water pressure. The most important characteristics for the uniformity were a pattern, number, and diameter of the holes on the lay flat sprinkler hoses. The amount of irrigation was different up to 2.3 times under the same (or about same) water pressure. Statistical uniformity (CV) of the sprinkler hose A, B, C showed good to fair, good, and fair respectively. Emission uniformity (EU) of the sprinkler hose A, B, and C classified good, excellent to good, and fair individually. The results of this study would be useful for proper water management by providing fundamental data such as water pressure level, spacing, and water management when installing lay flat sprinkler hoses in crop cultivating sites.

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Section: Methodsunclassified

Section: Introductionunclassified

Evaluation of the Uniformity and Distribution of Water Spray Due to Type of Lay Flat Sprinkler Hose and Pumping Pressure

Jeon

Han

Hyun

et al. 2019

Korean J. Soil. Sci. Fert.

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“…Additional key words: growing stage, irrigation amount, marketable yield, soil water tension, water use efficiency (Bum et al, 1999;Jeon et al, 2010;Rhee et al, 2013), 적절한 관수는 비료량을 50% 절감할 수 있다 (Locascio et al, 1977) (Lee et al, 2010). 시설원예 작물재배에서는 토양 수분장력을 달리 하여 오이 (Bum et al, 1999;Buttaro et al, 2015), 파프리카 (Rhee et al, 2013), 토마토 (Yu and Bae, 2004;Kang and Choi, 2009)…”

Section: Research Articleunclassified

Effect of Soil Irrigation Starting Point Using Tensiometer on Growth and Water Use of Cucumber in Greenhouse

An¹,

Jeon²,

Lee³

et al. 2021

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This experiment was conducted to investigate the effect of the soil irrigation starting point on the growth and water use efficiency of cucumber at each growth stage in a greenhouse. Cucumber (Cucumis sativus L.) 'Chungchun' grafting seedlings were transplanted on April 20, 2020 and cultivated until July 5, 2020 in a polyethylene greenhouse in Chuncheon-si, Gangwon-do. Soil irrigation starting point using a tensiometer were treated in 10-10-10 (T1), 10-10-20 (T2), 20-10-10 (T3), 20-10-20 (T4), and a control. The total amounts of irrigation, growth, yield and water use efficiency were measured. The average daily soil water tension (kPa) was 8.3 for T1, 9.2 for T2, 10.7 for T3, 10.2 for T4, and 5.9 for the control. The total amount of irrigation supplied was from 53,322 mL (T1) to 59,206 mL (T4), there was no difference between treatments. The average daily irrigation amount per plant was 773 mL (T1), 787 mL (T2), 780 mL (T3), and 858 mL (T4). The total number and intervals of the irrigations were not different from 86 times (T3) to 99 times (T1) and 0.7days. In the control, the daily average amount of irrigation was 1,525 mL, and the total number of irrigations was 50. In the control, the average amount of irrigation was twice that of the treatments (T1, T2, T3, and T4), and the number of irrigations was reduced by more than 40%. On the 43rd day of treatment, plant height, number of nodes, leaf width, and number of leaves were highest in the control, and the lowest plant height was in T3 and T4 treatments. There was no significant difference

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“…최근 기후 변화로 인한 가뭄의 발생 빈도와 강도가 증가하고 있기 때문에, 농업분야에서 물 부족에 대비하여 물이용효율을 높일 수 있는 다양한 물관리 방법들이 연구되고 있다. 가을배추, 봄배추, 노지고추의 물 절약형 관개기준설정 (Eom et al, 2010(Eom et al, , 2012Jung et al, 2011), 점적관 배치에 따른 콩의 관개용수 이용효율 (Lee et al, 2018), 절수관개방법이 벼 수 량 및 품질에 미치는 영향 (Choi et al, 2006), 시설재배 오이의 적정 관개시점 평가 (Jeon et al, 2010) (Jensen et al, 1990;Allen et al, 1998) 요량을 산정하였다. 적정 물 필요량 산정 공식은 Eq.…”

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Evaluation of Water Balance for Winter Crop (Forage Barley) Using Different Upland Soil Weighable Lysimeters

Kim,

Hur,

Hwang

et al. 2023

Korean J. Soil. Sci. Fert.

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Due to recent climate change, various studies are needed to respond to water shortage in the agricultural sector. One of the important factors for efficient water management is the quantification of evapotranspiration. In this study, water balances such as evapotranspiration and precipitation during growth of forage barley (Hordeum vulgare L.), a winter crop, were compared and analyzed using a weighable lysimeter, and crop coefficients and optimal water requirements for each growth stage were presented. Forage barley was cultivated repeatedly for three years in two soils with different soil textures. As a result of analyzing the water balance, there was no difference in the total inflow between two soil textures. The total outflow tended to be higher in the sandy loam soil, because the evapotranspiration was higher in the sandy loam soil which is better for crop growth. The crop coefficients by growth stage were 0.80, 1.00, 1.00, 1.30, and 1.17, respectively. As a result of estimating the optimal water requirement during the three-year cultivation period and comparing it with normal years, it was 15%, 7%, and 1% higher than normal years due to the low cumulative precipitation, and the water requirements were slightly higher than normal years. Accurate water balance evaluation and development of national factors in Korea using weighable lysimeter are expected to contribute to the estimation of the water management for upland crops in the future.

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Micro-sprinkler Irrigation Uniformity as Affected by Different Water Pressure and Outlet Intervals

Cited by 3 publications

References 6 publications

Evaluation of the Uniformity and Distribution of Water Spray Due to Type of Lay Flat Sprinkler Hose and Pumping Pressure

Evaluation of the Uniformity and Distribution of Water Spray Due to Type of Lay Flat Sprinkler Hose and Pumping Pressure

Effect of Soil Irrigation Starting Point Using Tensiometer on Growth and Water Use of Cucumber in Greenhouse

Evaluation of Water Balance for Winter Crop (Forage Barley) Using Different Upland Soil Weighable Lysimeters

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