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작물 가뭄스트레스 조기탐지 가능성 타진을 위한 서로 다른 종류의 식생지수 활용
문현동,조은이,조유나,김현기,김보경,이유현,정회정,권동원,조재일,Moon, Hyun-Dong,Jo, Euni,Cho, Yuna,Kim, Hyunki,Kim, Bo-kyeong,Lee, Yuhyeon,Jeong, Hoejeong,Kwon, Dongwon,Cho, Jaeil 대한원격탐사학회 2022 大韓遠隔探査學會誌 Vol.38 No.6
The irrigation schedule system using early detection of crop water stress is required to maintain crop production and save water resource. However, because previous studies focused on the crop under stress dominant condition, the crop physiological properties, which can be measured by remote sensing technique, on early crop water stress condition are not well known. In this study, the canopy temperature, MERIS Terrestrial Chlorophyll Index (MTCI), and Chlorophyll/Carotenoid Index (CCI) are observed on the soybeans given the early water stress using thermal imaging camera and hyperspectral camera. The increased canopy temperature and decreased MTCI are consist with the previous studies which are for the crop of stress dominant-sign. However, the CCI was increased contrary to expectation because it may faster the reduction of carotenoid than chlorophyll in early stage. These behaviors will be useful to not only develop the irrigation system but also using the early detection of crop stress.
열화상 카메라 활용을 위한 토양비료, 차광생육, 유전특성 차이 관련 작물생리 원격탐지
문현동,조유나,조은이,김현기,김보경,정회정,권동원,조재일,Moon, Hyun-Dong,Cho, Yuna,Jo, Euni,Kim, Hyunki,Kim, Bo-kyeong,Jeong, Hoejeong,Kwon, Dongwon,Cho, Jaeil 대한원격탐사학회 2022 大韓遠隔探査學會誌 Vol.38 No.6
The leaf temperature is principally regulated by the opening and closing of stomata that is sensitive to various kinds of plant physiological stress. Thus, the analysis of thermal imagery, one of remote sensing technique, will be useful to detect crop physiological condition on smart farm system and phenomics platform. However, there are few case studies using a thermal imaging camera on the agricultural application. In this study, three cases are presented: the effect of lime fertilizer on the rice, the different physiological properties of soybean under shading condition, and the screening of soybean breeds for salinity tolerance characteristic. The leaf temperature measured by thermal imaging camera on the three cases was used effectively to the physiological change and characteristics. However, the thermal imagery analysis requires considering the accuracy of measured temperature and the weather conditions that affects to the leaf temperature.
박진기 ( Jinki Park ),이성태 ( Sungtae Lee ),이홍석 ( Hongseok Lee ),정회정 ( Hoejeong Jeong ),정미혜 ( Mihye Jeong ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0
노지 밭작물 재배는 기후변화 및 고령화 등으로 생산혁신을 위한 새로운 대안이 필요하다. 세계는 스마트농업을 미래의 성장산업으로 인식하고 있으며, 인공지능, 로봇, 빅데이터 등 디지털기술 발달로 국내외 스마트농업 시장 규모는 급속히 확대되고 있다. 우리나라 농가 인구는 2000년 403만명에서 2030년에는 54%가 감소한 187만명으로 예상하고 있으며, 고령화는 2000년 21.7%에서 2030년에는 59.7%로 증가할 것으로 예상하고 있다. 따라서 식량의 안정적 공급을 위해 미래 환경변화에 대응한 스마트농업으로 전환이 필요하다. 국립식량과학원 남부작물부 생산기술개발과에서는 노지 스마트농업을 실현하기 위해 콩을 대상으로 테스트베드를 구축하였다. 노지 스마트농업을 위해 무선네트워크 망 구축, 관수시스템, 배수시스템, 관비시스템, 드론스테이션, 기상 및 환경센서, CCTV 등 기반을 구축하였다. 테스트베드에는 자동 물관리, 자동 배수, 해충진단, 드론 방제, 드론 생육 진단, LiDAR 생육계측, 자율주행 농작업(파종, 두둑형성, 제초제살포 동시작업) 등 스마트기술을 적용하였다. 2022년 콩(품종: 선풍) 재배결과 기존 관행 재배에서 노동력은 75.9시간/ha이 투입되었으며, 테스트베드는 35.5시간/ha이 투입되어 53% 감소되었다. 콩 수량은 관행 재배에서 285kg/10a이고 테스트베드는 328kg/10a로 15% 증가하였다. 남부작물부 테스트베드에는 2022년부터 지속적으로 개발된 기술을 접목하여 운영하고 있다. 현장 확산을 위해 2023년에는 9개 도농업기술원에 테스트베드 구축하여 운영하고 있으며, 2024년에는 농가 현장에 노지 스마트농업 기반을 구축·운영하여 적용성을 검토할 예정이다.
영농형 태양광 패널의 부분 차광 생육 환경이 작물 전자전달효율과 비광화학적 형광소멸에 미치는 영향
조유나 ( Yuna Cho ),김현기 ( Hyunki Kim ),조은이 ( Euni Jo ),오도혁 ( Dohyeok Oh ),정회정 ( Hoejeong Jeong ),윤창용 ( Changyong Yoon ),안규남 ( Kyunam An ),조재일 ( Jaeil Cho ) 한국농림기상학회 2021 한국농림기상학회지 Vol.23 No.2
영농형 태양광은 동일 토지면적에서 태양광 패널에 의한 발전과 작물 경작을 융합한 시스템이다. 광 에너지가 부족한 영농형 태양광 하부에서 작물의 수확량이 감소하는 것은 필연적이나, 이를 관장하는 패널 하부에서 생육한 작물의 광합성 반응에 대해서는 국내외적으로 거의 알려진 바가 없다. 본 연구는 고정형 영농형 태양광 시설 하부에서 재배된 작물 잎에 흡수된 광 에너지가 광합성 반응 중심에 전달되고 열로 방출되는 효율을 엽록소 형광 관측을 통해 조사하였다. 패널 하부와 노지의 콩과 벼는 ETR에서 큰 차이가 없는 것으로 보아 광인산화 효율보다는 잎이 흡수한 광 에너지 에 따라 CO<sub>2</sub> 고정량이 결정되는 것으로 보인다. 또한, 패널 하부의 콩과 벼는 노지보다 NPQ가 더 높은 것으로 보아 활성화된 광보호기작이 광인산화로의 에너지 분배에 부정적 역할을 할 수 있을 것으로 보인다. 향후 영농형 태양광에서의 작물 생산량과 광합성의 관계를 이해하기 위해 보다 다양한 기후 및 재배조건에서의 광합성 반응을 조사할 필요가 있겠다. An agrivoltaic system (AVS) is a system of innovation that comprises productions of photovoltaic power and agricultural crops on the same area. However, the decline in crop yield will be fatally occurred because the pigments of crop absorbs less light energy under AVS. In addtion, the photosynthetic capacity of crop grown under the partial shading of AVS is not well reported. In this study, the electron transport rate (ETR) and non-photochemical fluorescence quenching (NPQ) of soybean and rice under the AVS in Boseong and Naju was investigated using chlorophyll fluorescence measurement. The ETR value of soybean and rice under AVS were not significantly differed by location. It represents that the photophosphorylation rate of the crops is not critically different. It means that the decreases in total photosynthesis under AVS were mostly affected by the amount of light absorbed by leaves. Under AVS the photosynthesis of crops will be lower than field crops grown in open fields. This is because the crops under AVS observed higher NPQ, which means that the available energy cannot distribute to photophosphorylation reaction.
이홍석 ( Hongseok Lee ),전현정 ( Hyenchung Chun ),박진기 ( Jinki Park ),정회정 ( Hoejeong Jeong ),이성태 ( Seongtae Lee ),정미혜 ( Mihye Jeong ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0
Among the fundamental problems of soybean cultivation, damage from selective and non-selective herbicides used in conventional agriculture continues to occur. In particular, damage from herbicides and nutrients during early growth is difficult to classify even through visual inspection by experts, so analysis is being conducted in a laboratory environment. As such, analysis in a laboratory environment has a delayed response time and requires a lot of manpower. To solve this problem, we developed a technology to detect herbicide damage using hyperspectral imaging. To diagnose damage, Daechan beans were treated with the most commonly used herbicides, foliar treatments, bentazone and glufosinate, and soil treatments, Linuron and Alachlor. Germination of the soil treatment agent began 10 days after soil treatment, and analysis was performed based on when the cotyledons were fully unfolded. Reneuron showed the highest classification accuracy when using 785nm and 890nm wavelengths, and Alachlor showed the highest classification accuracy when using 788nm and 944nm wavelengths. For Reneuron, the classification accuracy is 88.49% (1x), 89.51% (2x), 90.31% (4x), 99.99% (8x), and 100% (16x), and for Alachlor, the classification accuracy is 63.41% (1x). They were 82.82% (2x), 95.06% (4x), 96.62% (8x), and 96.71% (16x). The foliage treatment agent was applied during the third leaf stage of the crop growth season, and images were measured and analyzed for 10 days. Glufosinate showed the highest classification accuracy when using 1387nm and 1563nm wavelengths, and bentazone showed the highest classification accuracy when using 1408nm and 1493nm wavelengths. For glufosinate, the classification accuracy was measured at 77.97% (1x), 93.52% (2x), 93.70% (4x), 96.70% (8x), and 97.53% (16x), and for bentazone, the classification accuracy was 87.06% (1x), 94.04% (2x), 93.72% (4x), 93.02% (8x), and 93.64% (16x).
벼 오존가스 노출에 따른 초기 생육 및 안토시아닌 생합성 변화 분석 연구
이현석 ( Hyeonseok Lee ),황운하 ( Woonha Hwang ),양서영 ( Seoyeong Yang ),송영서 ( Yeongseo Song ),임우진 ( Woojin Im ),정회정 ( Hoejeong Jeong ),이충근 ( Chunggen Lee ),김주희 ( Juhee Kim ),최명구 ( Myounggoo Choi ) 한국농림기상학회 2023 한국농림기상학회지 Vol.25 No.2
Recently, the concentration of fine dustcausative substances (NOx, VOC, etc.) in the atmosphere has increased, resulting in high concentrations of tropospheric ozone (O3) and increased damage to crops. This study aimed to analyze the impact of high concentrations of ozone gas on the initial growth of rice plants and investigate the relationship between ozone damage resistance and anthocyanin biosynthesis. To achieve this, rice plants were exposed to elevated levels of ozone gas using an ozone chamber, and subsequent measurements were taken to assess changes in growth, the percentage of damaged leaves, and the anthocyanin content. The results revealed that varieties with a higher proportion of damaged leaves exhibited a relative increase in anthocyanin biosynthesis following ozone exposure. Notably, detrimental effects on growth, such as decreased biomass, were mitigated. Additionally, Anthocyanin biosynthesis genes in rice were listed by selecting homologous genes from Arabidopsis and Maize. The expression of OsF3H2, OsFLS1 and OsLDOX3 was induced during ozone treatment. This result is expected to contribute to the study of the protection mechanism of plants from ozone damage.