• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1999.04a
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• pp.62-66
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• 1999

야생화를 도시환경 조성에 이용하고저 대량 육묘기술 중 알맞는 관수방법과 양액을 구명하기 위하여 꽃향유를 공시하여 시험한 결과 다음과 같았다. 1 2개월 육묘시 저면 양액 담배수 관수 방법이 지상 관수에 비해 10배나 높은 생장량을 보였다(지상관수 자료는 Data에는 보이지 않음). 2. 뿌리발달로 보아 저면 양액 관수방법은 2개월 육묘로도 가능하였지만 지상 관수는 3개월 육묘해야 화단에 정식 할수 있을 것으로 보였다. 3. 2개월 육묘 저면 양액 관수시 양액농도는 1/2S의 Sonneveld 기준액이 가장 좋았고 N, K 는 약간 늘려주는 것이 좋았다. 4. 식물체내 무기물 성분은 저면 양액 관수가 높았고 생장량이 많았던 구가 비교적 높았다. 5. 화단에 정식시켜 개화기의 관상가치는 지상관수나 저면 양액 관수가 별 차이를 보이지 않아 흡비력이 높은 이 야생화는 육묘시는 다소 생장이 떨어져도 화단에서는 대체로 같아졌다. 6. 개화기의 초장도 3/2S와 Hyponex구에서 가장 컸으나 초장은 너무 커서 재배적으로 좀 줄여줘야 더 좋을 것으로 보여 S나 1/2S도 좋을 것으로 생각되었다.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.225-225
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• 2017

농촌지역 관수공급의 대부분은 지하수, 하천, 저수지 등 주변의 다중수원을 활용하고 있지만, 지속적인 가뭄 발생시 농업용수의 부족현상을 일으키며, 농작물의 생산량과 품질에 많은 영향을 주는 원인이 된다. 밭작물의 경우, 재배작물별로 적절한 재배환경조성은 작물의 생산성에 매우 큰 영향을 주므로 생육에 필요한 알맞은 토양수분을 유지를 위해 적절한 관수공급이 중요하다. 이러한 농촌지역의 물부족 현상을 대비하여 효율적인 관수공급으로 인한 물관리와 대체 수자원의 확보 및 활용방안이 요구되며, 대체 수자원을 저류하여 관수공급을 효과적으로 사용하는 방법들이 다각적으로 검토되고 있다. 특히, 빗물을 집수하여 재사용 하여 작물을 재배하는 방법이 친환경적일 뿐만 아니라, 수자원을 재활용하기 때문에 비용적인 측면에서 가장 효율적이므로 이러한 빗물을 저류조에 집수하여 효과적으로 재사용 하여 관수공급하는 방법에 대한 필요성이 대두되고 있는 실정이다. 이에, 본 연구에서는 농촌지역에서 작물재배를 하기 위해 관수공급시 관정의 수량이 충분한 평상시는 관정펌프로부터 물을 길러 관수를 하도록 하였고, 관정의 수량이 부족한 비상시(가뭄)와 강우 예측시에는 저류조로부터 관수를 하도록 가뭄시나리오와 강우시나리오를 구축하였다. 효율적인 관수공급 운영을 위해 기상청의 7일 기상예보 자료를 획득하고 강우분석을 통해 저류량 예측을 하고 작물별 일관수공급량을 계산하여 물부족이 일어나지 않도록 최적의 운영방법론을 구축하였다. 이를 통해, 다중수원으로부터 확보된 수원을 저류조에 저장하여 가뭄과 같은 비상 상황에서 농업용수로 사용이 가능하도록 함으로써 비상 상황에서 농작물의 피해를 최소화할 수 있을 것으로 판단된다.

• Asian Journal of Turfgrass Science
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• v.26 no.2
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• pp.123-128
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• 2012

Kentucky bluegrass (Poa pratensis) is most widely used in golf courses and athletic fields. Weakness of Kentucky bluegrass is shallow root zone and has weak tolerance to shade. One of the biggest disadvantages is high demand of water. Water content is important factor to maintain excellent color and quality of turfgrass. There are two irrigation methods which are 'deep and infrequent (DI)' and 'Light and frequent (LI)'. The objective of the study is to investigate Kentucky bluegrass growth treated by different irrigation frequency. Three irrigation frequency were made; no irrigation, every other day, and weekly. The same amount of water was used between every other day and weekly irrigation except no irrigation. No irrigation mean no artificial water supply and precipitation only. No irrigation treatment produced turfgrass quality lower than acceptable rating of six in July and August. Under the weather condition of 2011, no irrigation could not maintained acceptable turfgrass quality. No significant differences were found for Kentucky bluegrass quality between DI and LI.

• Korean Journal of Plant Resources
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• v.19 no.2
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• pp.344-347
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• 2006

Watering methods for soybean sprouts could be mainly divided into two groups of overspraying and underwatering. The study was carried out to determine the effect of water supplying method on growth, morphological characteristics, colour and cutting resistance of soybean (cv. Junjery) sprouts and culture temperatures. The morphological characters, fresh and dry weights were measured on the 6th day after their culture, but daily mean temperatures inside the plastic culture boxes were measured by data-loggers. Lateral roots were more formed in the underwatering method (UM) than in the overspraying method (OM). Although their total lengths of both methods were nearly same, OM had longer hypocotyl but UM did longer root than the other. Middle and upper parts of hypocotyl were more thickened in UM than in OM. UM showed more hypocotyl fresh and dry weights than OM. There was, however, no significant difference between the two methods in cotyledon, root, total fresh and dry weights although the culture temperature was higher in OM than in UM.

• Journal of Bio-Environment Control
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• v.4 no.1
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• pp.74-79
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• 1995

This study was made to investigate the effects of soil moisture content according to irrigation methods on the storability and quality of cucumber. The fresh weight loss of cucumber fruit harvested in drip irrigation plot was more than that in conventional irrigation plot at both 13$^{\circ}C$ and 24$^{\circ}C$ storage temperature. Dry weight ratio decreased during storage, and was higher in conventional irrigation plot than drip irrigation plot both 13$^{\circ}C$ and 241 storage. The decrease of dry weight ratio was higher at 24$^{\circ}C$ than 13$^{\circ}C$. Vitamin C was not influenced by soil moisture content, but decreased during storage at 13$^{\circ}C$ and 24$^{\circ}C$ The decrease of vitamin C at 24$^{\circ}C$ in 8 days after storage was twice as much at 13$^{\circ}C$. Firmness was measured differently in two parts of cucumber ; fruit stalk and blossom part. The firmness of fruit stalk part was higher than that of blossom part. This phenomena was observed continuously at until final day at 13$^{\circ}C$ and 24$^{\circ}C$ storage. But the difference of firmness was not showed in soil moisture content. Vitamin C, firmness and other quality characteristics were not influenced by soil moisture content during cultivation. The different soil moisture content according to irrigation methods did not affect the storability and quality of cucumber.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.11a
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• pp.47-68
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• 2002

분화류 및 화상식물 생산에 있어서 관수방법에 관한 연구가 노동력 절감과 고품질 생산 그리고 최근에는 환경친화적인 측면에서 연구되어지고 있다. 과거 분화류 및 화상식물 생산을 위한 전면관수(Conventional overhead irrigation system)는 온실 바닥이나 벤치위에 식물을 위치시키고 분무 노즐이나 수 작업으로 상부에서 관수하는 방법으로 노동력의 소모가 매우 많았다. (중략)

• Journal of Bio-Environment Control
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• v.2 no.2
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• pp.110-118
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• 1993

This experiment was carried out to investigate the physical and chemical properties of growing media and to study the effects of growing media and irrigation methods on the growth of hot pepper(Capsicum annuum) transplants. The results were summarized as follows : 1. Growing media consisting of peatmoss and field soil at the volume ratio of 1 : 1, 1 : 2 showed suitable chemical properties for the growth of hot pepper transplant. 2. The germination rate of hot pepper in the sprinkler- irrigation was higher than that in the sub - irrigation. In the sprinkler irrigation, there was no difference of germination rate among the mixed growing media. 3. The growth of hot pepper transplant in the sub - irrigation was better than that in the sprinkler-irrigation. Peatmoss and field soil mixtures with the volume ratio of 1 : 1 and 1 : 2 showed the best growth condition.

• Journal of Bio-Environment Control
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• v.18 no.3
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• pp.225-231
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• 2009

'Nokkwang' green pepper plants were grown in soil system (silty loam with pH 6.5) under the greenhouse, to determine the effects of subsurface drip irrigation (SDI) and subsurface drip irrigation plus aeration (SDIA) into root zone comparing with conventional surface drip irrigation (DI) in terms of water use efficiency, soil properties, and growth and fruit yield. Two drip lines per crop row were layed on the soil surface in DI system, buried at a depth of 20cm below the soil surface in SDI system, and also buried at a depth of20cm below the soil surface and aerated for 3minutes a hour during the daytime ($08:00{\sim}19:00$) by a air compressor in SDIA system. A automatic irrigation with starting point of -20kPa and ending point of -10kPa based on soil moisture contents was applied by controllers and electronic vacum soil moisture sensors. Reduction in soil moisture contents was delayed in SDI and SDIA, compared to DI. Irrigation amount applied in pepper cultivation was around 30% less in SDI than in DI. Electric conductivity and nitrate nitrogen content in the surface soil grown green pepper were significantly lowered in SSDI and SDIA, compared to DI. Better development of root system was observed in SDIA and SDI than in DI. Results showed that pepper fruit yield increased by 30% in SDIA and 22% in SDI in comparision with DI.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.49 no.6
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• pp.487-490
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• 2004

Methods for culturing bean sprouts could be divided into two main groups of overspraying and underwatering according to water supplying. The study was done to measure the effect of water supplying method on growth of mungbean sprouts and temperatures inside their culture boxes. The morphological characters, fresh and dry weights were measured on the 6th day after culturing, but temperatures of the boxes were recorded daily by dataloggers. Lateral roots was not formed in the under-watering method (UM) while partially done in the over-spraying method (OM). OM had longer hypocotyl but UM had longer root compared to the other. Two water supplying methods, however, had nearly similar total length adding hypocotyl and root lengths, diameters of middle and upper parts of hypocotyl. OM showed more total fresh weight than UM mainly resulting from increment of hypocotyl fresh weight. The fresh weight increment in OM was caused by relatively higher temperature of culture box compared to UM.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• v.10 no.2
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• pp.227-232
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• 2005