• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1994.05a
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• pp.9-19
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• 1994

Hydroponics, Nutriculture, Soilless culture 라고 불리워지는 양액재배는 결코 새로운 기술은 아니지만 최근 집약적 생산을 위한 공장적 재배 등을 통해서 다시 주목을 받고 있다. 과거에는 재배관리의 어려움 때문에 전문가 이외에는 재배가 곤란했지만, 최근 재배관리의 자동화경향 때문에 비전문가에 의한 관리도 가능하게 되고 있다. 양액재배는 토양재배에 비하여 여러가지 장점을 가지고 있다. 양액관리를 위한 장치의 개선과 적용작물의 선택, 생력관리기술이 확정되었고, 연작장애 대책, 안정적 계획생산, 무공해식품의 평가가 높기 때문에 양액재배 면적은 서서히 증가하는 추세라 할 수 있겠다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1993.10a
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• pp.11-12
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• 1993

여름철 온실의 수경재배를 위해서는 양액의 냉각은 필수적이다. 이와 같은 양액냉각을 적절히 실행하기 위해서는 먼저 시설내의 환경예측에 의한 양액의 냉각부하 산정 및 냉각부하에 따른 설비용량 결정이 필요하다. 그동안 국내외적으로 온실의 환경예측을 위한 모델들은 많이 개발되어 있지만 대부분이 토경재배를 대상으로 온실의 변화나 난방효율의 예측을 목적으로 하고 있으며, 수경재배 온실 더우기 양액 냉각을 취급하는 경우는 찾아보기 힘들다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1994.11a
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• pp.88-91
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• 1994

실험목적 :제주지방에 화산락인 송이(Scoria)가 수억톤 매장된 것으로 추정된다. 이 제주송이를 배지로 이용한 양액 재배에서 품질과 수량이 perlite, rock wool 등 일반 고형 배지경과 떨어지지 않는 연구 결과는 있으나 작물의 생육 과정에서 제주 송이가 양액 성분변화에 어떤 영향을 미치는지는 아직 발표된 바가 없다. 양액재배용 고형배지로 제주 송이가 안전한 사용을 위한 기초자료를 얻고자 수행했다. (중략)

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1994.11a
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• pp.36-47
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• 1994

Ⅰ. 고추의 양액재배에서 양액조성 및 환경조건에 따른 양액중 질소원의 관리요령 최근 한국 농촌에 보급되기 시작한 온실양액재배가 아직 초보적인 단계로서 양액재배기 미흡으로 첨단농업 시설원예의 확대에 장해요인으로 남아있다. 또한 현재 증가하고 있는 재배 시설과 재배기술은 거의가 외국에서 그대로 도입되어 환경 및 기후조건이 다른 한국은 그대로 적응하기 곤란한 점이 많다. (중략)

• Journal of Bio-Environment Control
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• v.12 no.2
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• pp.77-82
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• 2003

The effect of the particle size of perlite and irrigation amount on the growth, root activity and mineral competition of tomato was investigated in a recycling system. The particle sizes used were small (SPP, øl∼2 mm), medium (MPP, ø2∼3 mm), (LPP. ø4∼5 mm). Plant height, fresh weight and dry weight of tomato at the earlier growth stage were good at 3.0 L/day in MPP and LPP, but these were not significantly affected by irrigation amount in MPP, Fruit number, weight and yield increased at 1.5 L/day in SPP and 3.0 L/day at MPP or LPP, Deformed fruits tended to increase at higher irrigation amounts regardless of particle size. Root activity increased with increasing particle size with higher irrigation amount during early stage after transplanting, but remarkably decreased at 3.0 L/day in SPP as compared with the others at 100 days. Mineral contents of plants after harvest were higher at MPP and LPP than SPP, but were highest at 3.0 L/day in LPP. In conclusion, it was regarded that tomato growth in a recycling system was optimal at MPP or LPP with irrigation amount of B.0 L/day.

• 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.

• Journal of Animal Environmental Science
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• v.15 no.2
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• pp.161-170
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• 2009

This experiment was conducted to investigate the effects of compost leachate and concentrated pig slurry on growth of pepper in substrate hyrdoponic culture. In process of composting, compost leachate was was through a saturated compost heap. Pig slurry was filtered by ultra filtration and concentrated by reverse osmosis process. The pig slurry was mixed with chemical nutrient solution and byproduct based on nitrogen content. Peppers were grown in the seven different hydroponic solutions; compost leachate (CL), concentrated pig slurry (CS), compost leachate + byproduct (CL+BP), concentrated pig slurry + byproduct (CS+BP), compost leachate 50% + nutrient solution 50% (CL+NS), concentrated pig slurry 50% + nutrient solution 50% (CS+NS) and chemical nutrient solution for pepper. The chemical nutrient solution was the standard solution of National Horticulture Research Station for the growth of pepper. The concentration of nutrient solution was adjusted $1.6{\sim}2.0mS/cm$ in EC. The compost leachate and concentrated pig slurry were low in phosphorus (P), calcium (Ca), magnesium (Mg), but rich in potassium (K). Growth characteristics as affected by the different nutrient solution were significantly different. Growth and fruit characteristics treated with CL 50+NS 50%CS and 50+NS 50% were similar with NS 100% control plot. The dry weight of stem and leaf were 107.4, 104.2g in plot of NS 100% and CS 50%+NS 50%, respectively. The fruit of pepper showed lowest in the plot treated with 100% concentrated pig slurry, and the growth of pepper severely decreased after application of 100% CS treatment. The yield of pepper was not significantly different between the plots treated with mixture of CS50 + NS50% and 100% nutrient solution treatment. Fruit yield of the compost leachate concentrated pig slurry plot were 59, 14% compared to control, repectively. In conclusion, the mixture solution of 50% of pig slurry and 50% of nutrient solution could be used as a nutrition solution of pepper in hydroponic culture.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1998.10a
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• pp.92-94
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• 1998

최근 도시근교 시설재배토양의 염류 과다집적과 연작장해 발생으로 생산성이 저하되고 있다. 그리고 고품질 연중생산이 가능한 양액 재배 면적이 '93년 23ha에서 '97년 414ha로 급속히 증가되고 있는데 이 중 약12%가 담액경이나 박막수경의 순수 수경재배 방식이 차지하고 있다. 순환식 담액수경 상추재배를 기준으로 할 때 농가 300평 재배시 약 100ton의 양액이 소요되며 이 양액은 1회 재배가 끝난 후 상당량이 폐기되고 있고 고형 배지경 양액 재배의 경우에도 대부분 비 순환식 재배로 1회 관수 후 나오는 배액이 그대로 버려지고 이어 토양 및 지하수 등 환경오염, 자원 낭비 등의 여러 가지 문제를 야기시키고 있다. (중략)

• Journal of Animal Environmental Science
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• v.15 no.1
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• pp.51-58
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• 2009

The compost leachate was dark-colored solution that leaches out of the bottom of the compost pile. The compost leachate was rich in nutrients and can potentially used in plant culture. In the organic production, commercial liquid fertilizer was used to insure the availability of nutrients during the formation of the yield. The cost of supplemental liquid fertilizer could be reduced by developing a fertilizer based on animal fertilizer. This experiment was conducted to investigate the effect of different combination of compost leachate and conventional inorganic solution in hydroponic culture for lettuce growth. Six different treatments were applied. The compost leachate(CL) and nutrient solution(NS) were mixed by six different mixing ratios of 0:100, 20:80, 40:60, 60:40%, 80:20 and 100%:0% based on nitrogen content. The chemical nutrient solution was the solution of National Horticulture Research Station for the growth of leaf lettuce. The concentration of nutrient solution was adjusted 1.5 mS/cm in EC. The compost leachate was low in phosphorus(P), calcium(Ca), magnesium(Mg), but rich in potassium(K). The plant height of lettuce treated with CL 20+NS 80% was similar with 100% NS of control plot. Plant height was highest in the plot of CL 20+NS 80%. The treatment of 100% compost leachate was lowest in the growth characteristics of leaf lettuce. Number of leaf was very low in 100% compost leachate compared with plot of chemical nutrient solution. In the beginning of growth stage, SPAD value was reduced in plot treated with CL100%, but CL20+NS80% plot was higher compared to 100% compost leachate. SPAD value of leaf lettuce leaves was decreased as the amount of CL was increased. The dry weight of lettuce were 107.4, 104.2g in plot of NS 100% and CL 20%+NS80%, respectively. The leaf number and plant weight were decreased at high application plots of compost leachate. The leaf lettuce showed lowest in the plot treated with 100% compost leachate, and the growth of lettuce severely decreased after application of 100% CL treatment. The results showed that compost leachate can be use as liquid fertilizer for the organic hydroponic production. The mixture solution of 20% of compost leachate and 80% of nutrient solution could be used as a nutrition solution in hydroponic culture of leaf lettuce. Our studies have shown that is possible to produce using compost leachate, although growth is slower than when using a conventional inorganic hydroponic solution.

• Korean Journal of Environmental Agriculture
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• v.14 no.2
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• pp.246-249
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• 1995

This study was conducted to establish the optimal ratio of $NO_3^-$ and $NH_4^+$ for the nutrient culture of Gerbera hybrida Hort. The results were summarized as follows; 1. The growth of 'Volga' was best in 8 : 2($NO_3^-$ : $NH_4^+$) solution, while that of 'Mirage' was in 9 : 1 ratio. 2. The maximum quantity of cut flowers could be harvested in the 8 : 2 solution in 'Volga', whereas in 9: 1 solution in 'Mirage', but the differences between 9 : 1 and 8 : 2 were not significantly great. 3. In 'Volga', the qualities of cut flowers were not different among 10 : 0, 9 : 1 and 8 : 2, while those in 'Mirage' were not different among all treatments. 4. It turned out that the optimum ratio of $NO_3^-$ and $NH_4^+$ for the nutrient culture of gerbera in the farm house was 8 : 2, irrespective of cultivas.