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( Malinee Phonsuwan ),( Jin Seok Jo ),( Byeong Eun Moon ),( Naruemol Keawjumpa ),( Hyeon Tae Kim ) 한국농업기계학회 2016 한국농업기계학회 학술발표논문집 Vol.21 No.2
Too many fertilizer ions dissolve in water irrigation can be affected on the sensitive salt plants which is limited of several plant growths, While the M. crystallinum can enhance the growth under saline condition, It is recommended that is a to be a valuable commercial medicinal crop for the plant factory nowadays therefore it should be taken into account the appropriate nutrient demands to this plant. This work was done to determine the appropriate EC level with salt condition to increase a valuable yield. The Hoagland nutrient solution was applied modified as two electricity conductivity values at the EC 1.2 and EC 2.2 which were provided the added 2 mmolNaCl L-1 to compare with the normal EC conditions. As, at 50 days of planting was encouraged to the efficient growth at both saline conditions and were not different with the normal condition. At final harvesting, the total yield found that it had not statistically different at p>0.05, including the dry weights were increased more than 27% and 19% at low EC and high EC, but the total leaf area were showed the data as same as the normal condition. However, these plants could risk to uptake the number of Na+ ion toxic at using the Low EC level, but it could reduced absorption at using the high EC level.
Malinee Phonsuwan(마리네폰수완),Min Ho Lee(이민호),Byeong Eun Moon(문병은),Young Bok Kim(김영복),Naruemol Kaewjampa(나르몬 케우잠바),Yong Cheol Yoon(윤용철),Hyeon Tae Kim(김현태) (사)한국생물환경조절학회 2016 시설원예‧식물공장 Vol.25 No.4
본 연구는 퇴비에 함유된 영양소 및 중금속 함량을 파악하고 상추 재배시 퇴비의 적정 시용 비율을 알아보고자 수행되었다. 실험을 위해 두가지 퇴비를 이용하였다. 첫 번째 퇴비는 미완숙 퇴비(CA)이며 두 번째 퇴비는 시중에서 판매되고 있는 완숙 퇴비(CB)이다. 각각의 퇴비는 인공토양을 0%, 25%, 50%, 75%로 혼합하여 사용하였다. 50%와 75%의 비율로 혼합한 CA의 pH는 각각 5.39, 5.50으로 측정되었으며 약 산성으로 나타났다. CA 및 CB를 75% 비율로 혼합할 경우, 총 탄소 함량은 각각 14.5%와 6.5%로 다른 비율의 퇴비에 비해 높았고 대조구에 비해 총 질소와 인 농도가 유의하게 증가하였다. 총 탄소함량은 CA퇴비를 인공토양에 75% 혼합한 실험구에서 가장 높게 나타났다. CA는 CB와 비교하여 퇴비화율, 질소, 인의 농도가 크게 증가하였다. CB 75% 혼합한 실험구에서 구리(128 ㎎ ㎏<SUP>-1</SUP>), 아연(260 ㎎ ㎏-1), 납(0.32 ㎎ ㎏<SUP>-1</SUP>), 카드뮴(0.48 ㎎ ㎏<SUP>-1</SUP>)의 함량은 다른 혼합구에 비해 가장 많은 증가하였다. 특히 비소는 CA퇴비를 25% 혼합한 실험구와 CB퇴비를 75%, 50% 혼합한 실험구에서 가장 높았다(6.69 and 6.28 mg kg-1). CA실험구 중에서 상대적으로 낮은 염분 및 중금속 함량을 함유한 CA 25% 혼합한 실험구는 상추의 성장속도 및 엽면적 등이 CB에 비해 낮게 측정되어 최적의 성장조건은 아닌 것으로 사료된다. 따라서, CA를 사용하여 상추재배에 이용할 경우, 더 낮은 농도의 CA를 이용하는 것이 적당할 것으로 판단된다. The aim of this study was to evaluate effects of immature compost on the amount of nutrient content, heavy metal concentration, and application rate that were used for lettuce cultivation. The characteristics of the two composts (Compost A (CA) was immature compost and Compost B (CB) was mature compost) were evaluated upon mixing with commercial soil at 0%, 25%, 50%, and 75% (w/w). The poor chemical characteristics were appeared by use of immature compost as soil amendment; the 50% and 75% rates were weakly acidic at pH 5.39 and 5.50, respectively. The total carbon content at using of 75% of the immature compost and mature compost increased the most to 14.5 and 6.5% and it significantly increased concentrations of the total nitrogen and phosphorus compared to control. As for 75% mature compost rate increased significantly the concentrations of Cu (128 ㎎ ㎏<SUP>-1</SUP>), Zn (260 ㎎ ㎏<SUP>-1</SUP>), Pb (0.32 ㎎ ㎏<SUP>-1</SUP>) and, Cd (0.48 ㎎ ㎏<SUP>-1</SUP>) compared to control, and the highest As concentration increased significantly at 75% and 50% (6.69 and 6.28 ㎎ ㎏<SUP>-1</SUP>) including in 25% immature compost as 6.48 ㎎ ㎏<SUP>-1</SUP>. However, all of the high compost rates significantly decreased the shoot biomass of lettuce. The immature compost was potentially amended at an application rate of 25% due to a slight salinity and low risk to heavy metal uptake on lettuce growth. This use may be available if the rate is lower than that used in this trial.
Effects of Alum and Ferric chloride as a Blend on Poultry Litter Characteristics
( Waqas Qasim ),( Byeong Eun Moon ),( Malinee Phonsuwan ),( Jin Seok Jo ),( Min Ho Lee ),( Mohammad Nafees ),( Hyeon Tae Kim ) 한국농업기계학회 2016 한국농업기계학회 학술발표논문집 Vol.21 No.2
Aluminum sulfate, Ferric chloride, Ferrous sulfate and Sodium bisulfate used on poultry litter in the past individually at different concentration to reduce environmental pollution and increase chicken productivity. Poultry litter is also rich in nutrients which can be used as a fertilizer to crops. In this study we evaluate the effects of Alum and Ferric chloride as a blend on poultry litter characteristics. There were total five treatments Control, T1, T2, T3 and T4. Five Boxes (70 × 40 × 43 cm) were used for this experiment, in each box 1 kg fresh chicken manure and 4 kg sawdust were mixed thoroughly. NH3 and CO₂ emission, pH, EC, Moisture content, Total and Water Soluble nutrients of poultry litter were determined after applying blend of Alum and ferric chloride to T1, T2, T3 and T4 at concentration of (5%+5%), (2.5%+5%), (5%+2.5%), and (2.5%+2.5%) of litter respectively. All the parameters except from nutrients were checked on weekly basis up to six weeks. Nutrients were checked after 1 and 42 days of applying chemicals. NH3, CO₂ emission in control treatment were recorded high from other treatments throughout the experiment but reduced with time due to reduction in moisture content. In other treatments NH3 were 0 ppm at first 2 weeks then the emission starts slowly between 3rd and 6<sup>th</sup> weeks. At end of 6<sup>th</sup> week lowest NH3 and CO₂ emission was recorded at T1. pH and EC showed the inverse relationship, in control treatment high pH and low EC values were found, and in other treatments low pH and high EC values were found. After 42 days Nitrogen were reduces significantly from control treatment, the high N content were found in T1. Water Soluble Phosphorus were much lower in treated poultry litters than untreated both after 1 day and 42 days. These data give us an indication that use of Alum and Ferric chloride as a blend can be more useful amendments for reducing NH3, CO₂, pH and Moisture content which help in poultry productivity, controlling pollution and poultry litter as a fertilizer.
무창기공형 집열기 내 잉여 에너지 활용을 위한 축열 제어 시스템 개발 및 열성능 평가
문병은 ( Byeong Eun Moon ),이민호 ( Min Ho Lee ),김희태 ( Hee Tae Kim ),마리네폰수완 ( Malinee Phonsuwan ),최태현 ( Tae Hyun Choi ),유영선 ( Young Sun Ryou ),김현태 ( Hyeon Tae Kim ) 한국농업기계학회 2016 한국농업기계학회 학술발표논문집 Vol.21 No.2
본 연구에서는 실험돈사 내 무창기공형 집열기(Unglazed Transpired Collector; UTC) 제어 시스템 개발 및 잠열축열재 적용을 통해, (1) 시간에 따른 제어 출력 값과 온도 변화 분석, (2) 온도변화에 따른 잠열축열재 열성능 평가를 실시하였다. 실험은 경상대학교 내 자체 제작한 실험돈사에서 수행되었으며, UTC는 실험돈사 남쪽 벽면 내 10 m²(5 m Length × 2 m Height)의 크기로 설치하였다. 잠열축열재 저장을 위한 틀은 돈사 내, UTC가 설치된 남쪽 벽면에 4.08 m²(2.4 m Length × 1.7 m Height)의 크기로 설치하였으며, 실험에 사용된 잠열축열재는 Na₂SO₄·10H₂O로 총 140팩, 약 91.98 kg을 설치하였다. 실험돈사 내부 28.0℃를 기준으로 UTC 입기팬 및 축열재입·배기팬, 환기팬, 입기댐퍼, 보온등을 통해 실내온도를 조절하였으며, 실험은 10일 간 수행하였다. UTC 내부 온도는 일중 최고 58.7℃까지 상승하였으며, 실내 온도(T1)가 설정 온도 값인 28.0℃를 초과함에 따라 약 08:10부터 18:50까지 환기를 위한 입기댐퍼(O1)와 UTC 내 잉여 에너지를 축열하기 위한 축열재 배기팬(O4)이 가동되었다. 이는 일중 에너지를 축열할 수 있는 축열 가능시간을 의미한다. 18:50 이후 실내 온도(T1)가 28.0℃ 미만으로 낮아지면서 축열재 입기팬(O3)이 가동되었으며, 축열재 입기구 온도(T6)는 35.8℃로 같은 시각 실내 온도 27.9℃ 보다 약 7.9℃ 높은 온도로 공급되었다.