• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2011년도 추계학술발표회
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• pp.354-355
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• 2011

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 추계학술대회
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• pp.50-50
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• 2017

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2002년도 총회 및 추계학술발표회
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• pp.46.3-47
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• 2002

• Journal of Biosystems Engineering
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• 제39권2호
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• pp.96-100
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• 2014

Purpose: The objective of this study was to develop a classification index and the grade levels for a five-grade energy efficiency classification of agricultural dryers in Korea. Methods: The classification index and the grade levels were determined by using the performance test data published by the FACT over the last eight years to reflect a state of the art technology for agricultural dryers in Korea. The five grades were designed to have the classified dryers distributed normally over the grades with 15% for the $1^{st}$ grade, 20% for the $2^{nd}$ grade, 30% for the $3^{rd}$ grade, 20% for the $4^{th}$ grade and 15% for the $5^{th}$ grade. Results: The classification index was defined as the total amount of fuel and electrical energy consumed per 1% of the wet basis moisture content evaporated from a unit mass of grain or agricultural crops during the drying process: 1 MT of paddy rice for grain dryers and 1 kg of red pepper for agricultural crop dryers as the standard mass. Conclusions: The grade levels for the five-grade energy efficiency classification of grain dryers, kerosene dryers, and electric dryers were proposed in terms of the classification index value.

• Journal of Plant Biotechnology
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• 제45권3호
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• pp.155-170
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• 2018

본 논문은 현재까지 개발된 유전자편집 기술들의 작용기작 및 장 단점 등을 비교하고 이들 기술로 개발된 유전자편집(site-directed mutagenesis, SDN)작물들의 안전성 평가를 위한 분류 기준 등을 살펴보았다. 또한 2016년부터 2018년 5월 현재까지 발표된 유전자편집 식물 개발과 관련된 논문들을 조사하여 ZFN, TALENS, CRISPR기술별 발표 논문 추세를 조사한 결과 CRISPR기술을 적용한 연구건수가 절대적으로 많았다. 또한 애기장대와 벼를 대상으로 수행한 연구건수가 가장 많았으며, 담배와 토마토, 밀, 옥수수 등이 그 뒤를 이었다. 하지만 발표건수는 아직 1~2건에 해당하지만 대상 식물들은 주곡작물을 포함하여 화훼, 채소, 과수 등으로 다양하게 그 응용 범위가 확대되고 있는 것으로 조사되었다. 특히 실용화 또는 향후 상업화를 목표로 한 연구건수도 해마다 증가하는 추세에 있으며 그 응용 범위도 유용단백질 또는 물질의 대량생산을 위한 대사공학 연구와 바이러스, 세균, 곰팡이 등에 대한 병저항성 작물의 개발, 가뭄 등의 무생물적 환경스트레스 저항성 작물, 수량이 증대된 작물 등의 개발에 집중되었다. 이 외에도 단위결실 토마토, 웅성불임성 이용 hybrid벼, 탈립 저항성 증진 등으로 응용 범위가 점점 다양화되어 가고 있음을 알 수 있었다. 또한 미국 농무성의 동 식물 검역소에서 허가를 득한 CRISPR유전자편집 작물의 건수도 해마다 증가하여 조만간 이들이 국제 종자시장에 출시될 것으로 전망된다.

• 한국작물학회지
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• 제45권4호
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• pp.272-275
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• 2000

Winter green manure crops including legume increase grain yield of subsequent crop and substitute N fertilizer requirement with organic-No Hairy vetch grows vigorously and can provide N-rich green manure for corn with its soil incorporation after wintering. But, grain yield of corn as succeeding crop would be reduced if its planting time is delayed until late spring. This experiment was carried out to find the proper incorporation time of hairy vetch green manure and planting time of subsequent corn in cropping system with winter hairy vetch(green manure)-summer corn. Hairy vetch was incorporated into soil at a ten-day interval between April 10 and May 10 and corn was planted at 5 days after each hairy vetch incorporation. Soil nitrate concentration on April 10 and 20 in hairy vetch plot was slightly lower than that at winter fallow. Above-ground dry matter and organic-N of hairy vetch increased linearly with delayed hairy vetch incorporation time from April 10 to May 10. Average dry matter and organic-N produced by hairy vetch were 5.7 ton/ha and 248 kgN/ha, respectively. Corn growth and yield decreased as delayed corn planting time after May in spite of increasing dry matter and N-yield of hairy vetch. Nitrogen concentration of corn grain, stalk and whole plant at harvest were the highest in May 5 planting, but total N-uptake of May 5 planting were not different from that of April 25 planting because of lower grain yield. It was concluded that the proper incorporation time of hairy vetch and corn planting time were April 20 and April 25, respectively, because grain yield was the highest and corn could use hairy vetch-N effectively to produce dry matter.

• Journal of the Korean Data and Information Science Society
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• 제28권1호
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• pp.67-74
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• 2017

본 논문은 기후와 국제곡물가격의 인과관계를 분석한다. 기후는 곡물시장에 영향을 미치는 중요한 요인이지만 국제곡물가격의 인과관계를 분석한 선행연구는 제한적이다. 본 논문은 대표적인 세계기후 변수인 해양표면온도 (sea surface temperature; SST)와 세계 3대 곡물인 밀, 옥수수, 콩의 국제가격을 이용하여 1987년 5월부터 2013년 7월까지 기간의 월별자료를 분석하였다. 분석방법으로서 비모수 커널방법으로 제시된 고차 적률 인과관계 개념 (Nishiyama 등, 2011)을 모수적인 방법으로 변환하여 적용하였다. 분석결과, 기후는 1차 적률에서 3개 곡물가격 모두에 대해 그리고 2차 적률에서 옥수수와 콩의 가격에 대해 각각 인과관계를 가지며 3차 적률에서는 3개 곡물가격 모두에 대해 인과관계를 갖지 않는 것으로 나타났다.

• Mycobiology
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• 제45권4호
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• pp.240-254
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• 2017

Cereal grains are the most important food source for humans. As the global population continues to grow exponentially, the need for the enhanced yield and minimal loss of agricultural crops, mainly cereal grains, is increasing. In general, harvested grains are stored for specific time periods to guarantee their continuous supply throughout the year. During storage, economic losses due to reduction in quality and quantity of grains can become very significant. Grain loss is usually the result of its deterioration due to fungal contamination that can occur from preharvest to postharvest stages. The deleterious fungi can be classified based on predominance at different stages of crop growth and harvest that are affected by environmental factors such as water activity ($a_w$) and eco-physiological requirements. These fungi include species such as those belonging to the genera Aspergillus and Penicillium that can produce mycotoxins harmful to animals and humans. The grain type and condition, environment, and biological factors can also influence the occurrence and predominance of mycotoxigenic fungi in stored grains. The main environmental factors influencing grain fungi and mycotoxins are temperature and $a_w$. This review discusses the effects of temperature and $a_w$ on fungal growth and mycotoxin production in stored grains. The focus is on the occurrence and optimum and minimum growth requirements for grain fungi and mycotoxin production. The environmental influence on aflatoxin production and hypothesized mechanisms of its molecular suppression in response to environmental changes are also discussed. In addition, the use of controlled or modified atmosphere as an environmentally safe alternative to harmful agricultural chemicals is discussed and recommended future research issues are highlighted.

• Journal of Animal Science and Technology
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• 제44권1호
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• pp.75-86
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• 2002

반추동물에서 적당한 조사료의 공급은 젖소의 정상적인 반추 기능을 위해서 반드시 필요하다. 본 연구는 사료 작물 종류별, 볏집 및 곡류의 가공 상태를 달리하여 제조한 TMFF에 대하여 일반 성분, RFV 및 면양의 반추위 성상 변화를 조사하기 위하여 실시하였다. 청예 작물인 옥수수, 목초, 호밀, 유채, 알팔파와 귀리를 주구로 하고 곡류 가공 수준을 무가공 (대조구), 거칠게 분쇄 (7～14mm mesh 이상), 일반 분쇄 (7mm 이하)를 세구로 하여 조제한 각각의 TMFF에 대한 일반 성분을 조사하였다. 또한 Fistula가 부착된 면양 8두를 이용한 반추위 성상과 기호성에 미치는 영향을 조사하였다. 유채 TMFF는 상대적 사료가 (RFV)와 일당 사료 섭취량, A/P 비율에 있어서 다른 처리구보다 높은 경향을 나타내었다. 옥수수 TMFF를 급여한 면양의 반추위 VFA 함량은 90.9 mmol%로서 다른 처리구 보다 높았으며, 또한 사료의 pH도 3.82로서 가장 낮은 경향을 보였다. 그러나 TMFF에 있어서 휘발성 지방산 각각에 대한 차이는 찾을 수 없었다. 결론적으로 곡류 가공 방법에 따른 효과는 나타나지 않았지만 상대적 사료가와 기호성, 건물 손실율만을 고려하여 우수성을 판단할 때 유채, 옥수수, 알팔파, 목초, 귀리, 호밀 TMFF의 순서로 나타났다.

• 한국작물학회지
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• 제46권5호
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• pp.380-386
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• 2001

Dry matter(DM) accumulation in different plant parts of two Vigna spp., blackgram(Vigna mungo) and mungbean(Vigna radiata), was compared at different levels of salinity. Two vaarieties of each of blackgram (Barimash-1 and Barimash-2) and mungbean(Barimung-3 and Barimung-4) were grown with 50, 75 and 100mM NaCl solutions and tap water as a control till maturity. The DM accumulation in all plant parts of the two crops devreased with the increasing salinity levels. The reducation was severe in mungbean compared to blackgram. On an average mungbean produced only 3% grain yield compared to 37% in blackgram at 100mM NaCl. The salinity induced growth reduction was relatively less in Barimash-2 than that in Barimash-1. In mungbean, the relative DM production of Barimung-3 was greater than Barimung-4. The extent of biomass reducation due to salinity in different plant parts was not similar. At maturity the rank of biomass accumulation (at 100 mM NaCl) in different plant parts of blackgram was in decreasing order by seeds pod$^{-1}$ (97%), branch plant$^{-1}$ (88%), 1000-grain weight (79%), plant height(72%), pods plant$^{-1}$ (50%), leaf weight and root mass(both 49%) and stem weight (48%). In mungbean, the rank was in decreasing order by 1000-grain weight (57%), leaf weight (54%), plant height (52%), seeds pod$^{-1}$ (50%), branch plant$^{-1}$ (41%), root weight (34%), stem weight (24%) and pods plant$^{-1}$ (6%). Therefore, salinity reduced grain yield more than straw and roots of the Vignaq spp., and blackgram is relatively more salt-tolerant than mungbean.