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( Hyunhwan Kim ),( Jeongwook Heo ),( Gongin Lee ),( Jaesu Lee ),( Youngsin Hong ),( Sunghwa Choe ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
For years, efforts have been made to increase the added value of crops, to produce high-yield crops containing large amounts of functional materials, or to develop new products to secure the economical efficiency of artificial light plant factories. Arabidopsis is a crop that produces high-value recombinant proteins. It is known that various genetic manipulations of the crop are possible and medical proteins can be extracted from it. In this study, varieties, temperature, type of lamp, and photoperiodic response were investigated for the plant growth of the varieties Ariabiopsis as a precondition that the protein content of Arabidopsis was correlated with leaf weight. For the test, nine kinds of Arabidopsis seeds (JL00458.1, JL00510.1, JL00513.1, JL00528.1, JL00610.1, and COL) were sown in the smart greenhouse research center for the plant factory in Jeonju. Four weeks later, four chambers of 55% relative humidity and temperature (20, 24° C) were made. The cultivation method is nutrient flow technique (NFT). The light in the chamber consisted of fluorescent lamps and LEDs. The light intensity was 150 μmol m-2 · s-1, and it was divided into 12 hours and 16 hours. Growth survey was conducted once a week from December 2016 to February 2017. In fluorescent lamp, the plant length was increased. After 3 weeks had elapsed under the conditions of irradiation at 20℃ and 12 hours, the average length was more than 6 cm. At 5 weeks, some varieties (JL00458.1, JL00528.1, and JL00610.1) exceeded 9 cm and were excellent. Comparing at 12 and 16 hours at 24℃, it was confirmed that the growth rate was fastest in 2nd ~ 4th weeks in some varieties. In LED lamp, the plant length was also increased. After 4 weeks had elapsed under conditions of irradiation at 20℃ and both 12 and 16 hours, the average length 6 cm mostly. At 7 weeks, COL did not exceed 9 cm under the conditions of irradiation at 20℃ and 12 hours, and three varieties did not exceed 9 cm under the conditions of irradiation at 20℃ and 16 hours. Therefore, it was found that 12 hours was better at 20℃. As a result, fluorescent lamp, 20 ° C, and 12 hours condition and varieties (JL00458.1 and JL00510.1) are considered to be suitable.
( Hyunhwan Kim ),( Jeongwook Heo ),( Gongin Lee ),( Jaesu Lee ),( Youngsin Hong ),( Chungyoul Jung ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
Plant factories need to develop preventive and control technology of pest infestation as the rapid damage of crops and the occurrence of secondary diseases are major concerns when insect pests are infested with temperature and humidity suitable for growing pests, while creating and maintaining the optimum environment for crop growth. Although a self-contained insect repellent has been developed for the physical control of insect pests, it has not been put into practical use due to the high installation cost compared to the control effect. Therefore, it is necessary to insect pest infestation and physical control technology suitable for the natural light plant and greenhouse environment. In this study, a pest fluorescent response test was carried out for pest catching and development. For the pest color test, a test apparatus was construct on the test of the agricultural engineering department in Jeonju and tested at intervals of 1 m. The test equipment was 50 x 50 x 50 cm and made of plywood. The inside of the box and the grid pattern were painted with the same color fluorescent material. Fluorescent colors were green, yellow, blue, orange, and red. The test was conducted twice a day at 8:00 am and 5:00 pm. Sugar, rice wine, apple peel and grapes were put into each test device for pest induction. The insect trapping system (SKY-M LED, IRREGREEN Co., Ltd.) was used, and 20W of black light fluorescent lamp was used. Ultrasonic pest control (Ultrasound Ultrasonic Pest Control, Tae Yang Ind. Co.) was used for the pest cotrol. The test period was 35 days from October 19th to November 22, 2017. The pests collected as a result of the test are moth moth, tobacco moth, room moth, thistle moth, other moths, bumblebees, cymbals, pteridophyte, mycetophyll, housefly, etc. 51.53% of mycetophylls, 22.86% of houseflies and 8.92% of caldrus. The moths were 2.03% of the room moths, 1.34% of the moth moths and 0.43% of the tobacco moths. Pests appeared more often in the morning than in the afternoon. In other words, there were many catches at night, and there were various kinds. Blue and red fluorescence showed the highest insect pests, and orange was the lowst insect pests. It was not known whether the insect infusion would be reduced when running the insect repellent only on a test device with UV, etc. However, overall insect repellent activities reduced insect infestation. It was necessary to determine the color of the insect screen along with the physical insect screening at the natural light plant through the insect infestation and eradication system. It has to confirm the necessity of continuously research on the insect pest control at the plant factory.
( Jeongwook Heo ),( Kyounghoon Park ),( Chanheum Park ),( Jaesu Lee ),( Jeonghyun Baek ),( Seouggil Hong ),( Gongin Lee ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
In hydroponic culture, several nutrient solutions were used for plant growth and development under smart greenhouse (Plant factory system) conditions with artificial lights instead of sun light. The conventional solutions are automatically irrigated for leafy plants production under controlled EC and pH conditions. Researches on the nutrient solution control were focused on the cool-season leafy plants such as lettuce spp. growing for 4~5 weeks after seedling transplantation on hydroponic culture bed. However, investigations on the effects of nutrient solutions for long term culture crops compared to the leafy plants have not been conducted. It was conducted to investigate the effect of conventional culture mediums on long-term growth of Ledebouriella seseloides seedlings under smart greenhouse conditions. Conventional Japan Wonsi standard (JW), Yamazaki Leaf lettuce (YL), and Yamazaki Padeudeuk (YP) solutions were used for hydroponic culture. The seedlings with a longer growth period than leafy plants were considered as a plant material. The seedlings which developed 2~3 true leaves were grown in the smart greenhouse with Light-Emitting Diodes (LEDs) lights of blue, red and white of 1:2:1 mixture in energy ratio. The three nutrient solutions were regularly irrigated by the deep flow technique (DFT) system on the culture gutters for 350 days. Long term culture of Ledebouriella seseloides seedlings with a longer growth period was established by the nutrient solutions which conventionally used for hydroponic culture of leafy plants inside the smart greenhouse conditions. There was no significance in the leaf growth of the seedlings such as fresh weight, leaf extension and leaf pigmentation among the mediums. From the results, it is suggested that the type of culture mediums was not crucial factor in long-term growth of the seedlings under controlled environments such as smart greenhouse conditions although average leaf number of the seedlings grown under MJ or YP treatment significantly increased.
LED의 간헐조명과 RGB 비율에 따른 상추의 품종별 생육 특성
김성진(Kim Sungjin),복권정(Bok Gwonjeong),이공인(Lee Gongin),박종석(Park Jongseok) (사)한국생물환경조절학회 2017 생물환경조절학회지 Vol.26 No.2
본 연구는 상추((Lactuca sativar L.)의 3가지 품종에 대해서 RGB LEDs의 각각의 다른 비율과, 듀티비 50% 조건의 RB LEDs를 이용한 여러 가지 주파수를 가지는 펄스광 조사가 상추의 생장과 형태형성에 미치는 영향을 살펴보기 위하여 수행되었다. 파종 후 육묘 기간을 거쳐 유사한 외형을 갖는 묘를 선발하여 재배 룸의 온도와 습도, 23±1℃/50-60%(주간)과 18±1℃/70-85%(야간) 조건에서 담액수경재배로 4주간 재배하였다. 광합성유효광량자속밀도(PPFD)는 재배베드 위에서 110±3μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP>, RGB 비율은 6:3:1, 5:2.5:2.5, 3:3:4, 2:2:6, 1:1:8 이었다. 50% 듀티비를 갖는 펄스광은 RB LEDs로 구성되었고 설정된 주파수는 50, 100, 500, 1,000, 5,000, 10,000, 25,000㎐(20, 10, 0.1, 0.04㎳) 이었다. RGB 비율 6:3:1에서 적축면 상추의 생체중은 다른 RGB 처리구와 비교하여 유의적으로 높은 값을 보였으나, 대조구인 형광등 처리구와는 유의적 차이가 발생되지 않았다. RGB 비율 1:1:8의 조건에서, 롤로로사는 생체중, 그랜드 래피드는 엽수와 생체중이 다른 RGB 처리구와 비교하여 유의적으로 낮았다. 청색광의 비율이 증가할수록, 3개 품종 모두에서 엽장이 감소하면서 엽형이 둥근 형태로 발달하였다. RB LED로 구성된 LED 광조건 하에서 50% 듀티비 조건과 처리된 여러 주파수의 증가 또는 감소에 따른 상추의 생육 및 형태형성에 미치는 경향성을 발견하기 힘들었다. This study was aimed to investigate the effect of 1)irradiation with several different ratios using red, green, and blue LEDs and 2)various pulsed light irradiation with 50% duty ratio using red and blue LEDs on the growth and morphogenesis of three lettuce cultivars (Lactuca sativar L. cv. ‘Jukchukmeon’, ‘Lolo Rosa’, and ‘Grand Rapid’) in hydroponics culture system for 4 weeks after transplanting. Seeds were sown in rock-wool plug trays and they were placed in a culture room which was controlled at 23±1℃/18±1℃ temperature and 50-60/70-85% for day and night, respectively, during cultivation period. Irradiated RGB ratios with LEDs were 6:3:1, 5:2.5:2.5, 3:3:4, 2:2:6, and 1:1:8 with 110±3μ㏖·m<SUP>-2</SUP>·s-1 PPFD on the surface of cultivation bed. The frequencies of pulsed lighting was 50, 100, 500, 1,000, 5,000, 10,000, 25,000㎐ (20, 10, 0.1, 0.04 ㎳) with red and blue LEDs and 50% duty ratio. At the RGB ratio of 6:3:1, the average fresh weight of ‘Jukchukmeon’ was significantly higher than that of other RGB treatments, but no significant difference compared to the fluorescent treatment. The average fresh weight at 1:1:8 RGB ratio in ‘Lolo Rosa’ was significantly lower than that of other RGB treatments. Leaf number and fresh weight of ‘Grand Rapid’ were significantly lower in the control and 1:1:8 RGB treatments, compared to the other RGB treatments. As the ratio of blue light increased, leaf length decreased and leaf shape became round in three lettuces. Although there is little change in growth, it could not be found any tendency to affect the growth and morphogenesis of three lettuces caused by increasing or decreasing frequency of pulsed lighting with 50% duty ratio at the 72μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP> PPFD.