• 한국육종학회지
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• 제51권4호
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• pp.475-481
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• 2019

'늘찬'은 '석량풋콩'과 '장엽콩'의 후대인 SS91501-9-1-1를 모본으로 '목포17호'와 '신팔달콩2호'의 교배후대인 SS96205을 부본으로 1998년에 인공교배하여 계통육종법에 의하여 선발된 품종이다. 2006~2008년 생산력검정시험에서 중립으로 병에 강하여 재배안정성이 높고 다수성으로 유망시되어 '밀양206호'의 계통명을 부여한 후 '09년에서 '11년까지 3년간 9개소에서 지역적응시험을 실시한 결과 중립 내병 내재해 우량계통으로 평가되어 품종보호출원 및 국가품종목록으로 등재하였다. '늘찬'은 유한신육형, 화색이 백색, 협색이 담갈색, 종실은 종피와 제색이 황색이면서 모양이 구형인 장류 및 두부용 콩품종이다. 개화기가 7월 30일, 성숙기가 10월 9일로 중만생종이며 경장은 '대원콩' 보다 4 cm 짧으며 주경절수가 14개로 같고, 백립중이 21.7 g으로 가벼운 특성을 지니고 있다. 검은뿌리썩음병은 다소 약하지만 불마름병과 콩모자이크바이러스에 저항성 품종이다. 두부가공특성은 '대원콩' 대비 밝기가 비슷한 정도였으며 경도도 '대원콩'과 비슷한 특성을 나타냈다. 메주 풍취와 청국장 풍취는 '대원콩'보다 약간 못하였으며 메주수율과 청국장 γ-PGA 함량이 '대원콩' 보다 우수하였다. 수량성은 지역적응시험 결과 전국 평균 2.95 ton/ha, 적응지역인 이모작 지대에서 3.07 ton/ha로 '대원콩'보다 약간 많은 다수성 품종이다.

• 한국농림기상학회:학술대회논문집
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• 한국농림기상학회 2019년도 하계 학술발표초록집
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• pp.220-220
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• 2019

• 한국유기농업학회지
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• 제25권2호
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• pp.279-293
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• 2017

This study suggests the yield forecast models for autumn chinese cabbage and radish using crop growth and development information. For this, we construct 24 alternative yield forecast models and compare the predictive power using root mean square percentage errors. The results shows that the predictive power of model including crop growth and development informations is better than model which does not include those informations. But the forecast errors of best forecast models exceeds 5%. Thus it is important to establish reliable data and improve forecast models.

• 한국육종학회지
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• 제51권3호
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• pp.214-221
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• 2019

'아람'은 보석(IT213209)과 Camp (IT267356)를 모본으로 2007년 인공교배 하여 F₁, F₂ 분리집단을 전개하고 F₃-F₄ 세대는 세계 채소 센터(AVRDC, Asian Vegetable Research and Development Center)에서 세대촉진을 수행하고 F₅ 세대에서 계통을 선발하였다. 2012년~2013년 생산력검정시험을 통해 수량과 농업적 형질을 평가하고, 2014~2016년 수원, 나주, 달성, 제주에서 지역적응시험을 수행하여 지역별 적응성과 재배 안정성을 평가하였다. 아람은 유한신육형이며 엽형이 삼각형, 화색이 백색, 모용색이 회색, 협색은 황색이며 종실은 소립 구형으로 백립중이 9.9 g으로 풍산나물콩보다 1.0 g 가볍고 종피색은 황색, 배꼽색은 담갈색의 질적 특성을 가지고 있다. 개화기는 8월 5일, 성숙기는 10월 15일로 만숙종이며 풍산나물콩 보다 7일 느리다. 경장은 65 cm, 착협고는 13 cm, 마디수는 16개, 분지수는 4.5개이며 분지가 길고 각도가 작은 도원추형 초형이다. 내병성 검정결과 불마름병, 종자 이병립율, 검은뿌리 썩음병, 콩나방 저항성 등이 모두 강하였으며, 콩모자이크바이러스는 G5, G6H, G7H 접종 시 모자이크 증상이 나타났으나 3년간의 자연 이병 검정결과에서는 병징이 조사되지 않았다. 발아특성은 발아세와 발아율 모두 풍산나물콩보다 우수하였으며 콩나물 특성은 풍산나물콩과 비슷한 수준이었다. 수량성은 지역적응시험 결과 남부지역 평균 3.59 ton/ha로 풍산나물콩 대비 12% 증수되었다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.346-346
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• 2017

In Northern Laos, maize is cultivated in continuous cropping without fertilizer, fallowing nor any other soil conservation practice. It is expected that this inadequate management in maize cultivation will degrade soil and decrease yield. However, there is limited information about the change of soil condition and yield under continuous maize cultivation. We tried to evaluate the change of soil condition and yield under continuous maize cultivation in Northern Laos. Our study was conducted in farmer's flat and slope fields in Sainyabuli province where maize cultivation had been introduced earlier than the other provinces of Northern Laos. Our study was conducted in 21 fields in 2014, and in 19 fields in 2015. We analyzed grain yield and soil characteristic (total carbon (TC), total nitrogen (TN), available phosphorus (Av-P), exchangeable cation, pH, soil texture) at 3 places in each field. The 3 places were set at different elevation level (lower position, middle position, upper position) in slope fields. Further, the period of continuous maize cultivation and crop management practice were investigated. Then, by evaluating the relation between the period of continuous maize cultivation and yield and the soil characteristics, the effect of maize cultivation was estimated. Crop management practices were similar among the investigated fields. Maize was cultivated in rain season. Grain seed and cob were harvested on September or October, but shoot was left on the fields. No crop was cultivated during dry season. Fertilization and fallowing has never been conducted under continuous maize cultivation. On the other hand, the period of maize cultivation was different among the fields, and ranged from 2 years to 30 years. In the slope fields, as the period of continuous maize cultivation was longer, the contents of TC and TN were lower at all 3 positions, Av-P content was lower at the upper position, exchangeable potassium (Ex-K) content was lower at the middle and the upper positions. The other soil characteristics weren't related with the period of maize cultivation in the slope fields. In contrast, soil characteristics weren't related with the period of maize cultivation in the flat fields. Yield was lower as the period of maize cultivation was longer at the upper position of the slope fields. At middle position of slope fields, yield tended to be low with increase of the period of maize cultivation. In contrast, yield wasn't related with the period of continuous maize cultivation in flat fields. From the results about crop management, it was presumed that the period of maize cultivation was one of the main factors causing the difference of yield and soil characteristics among the fields. Therefore, from the result of yield and soil condition, it was considered that the continuous maize cultivation decreased soil productivity in the slope fields with decline of TC, TN, Av-P, Ex-K and yield at upper position of slope fields, and decline of TC and TN in the other positions in Sainyabuli province.

• 한국약용작물학회지
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• 제26권1호
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• pp.1-7
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• 2018

Background: Rehmanniae radix preparata (RRP) has been used as a traditional medicine and is one of the most important oriental herbal medicines. However, the physical characteristics of RRP are not suitable for use in industry. The present study was under-taken to determined the preparation method of RRP powder and the physicochemical characteristics of RRP powder by milling under different pre-freezing temperatures. Methods and Results: Moisture content, powder yield, particle size, bulk density, compressive stress, extraction yield, and 5-HMF content of PRR powders by milling with pre-freezing temperatures (-20, -40, -60, and $-80^{\circ}C$) were analyzed, and correlation among these factors was determined. Powder yield increased and particle size decreased in a pre-freezing temperature-dependent manner from -20 to $-60^{\circ}C$. The Hausner ratio increased from 1.186 to 1.225 with decreasing temperature from -20 to $-80^{\circ}C$, whereas compressive stress showed the opposite trend. Extraction yield and 5-HMF content were not significantly different between RRP powder. Significant correlations were observed among pre-freezing temperature and physical characteristics (e.g., yield, particle size, Hausner ratio, and compressive stress). Conclusions: These results suggest that the pre-freezing temperature is an important factor affecting the physical characteristics of PRR powder and applicable to the industrial production of RRP powder.

• 한국약용작물학회지
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• 제18권6호
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• pp.416-420
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• 2010

Root yield and quality of ginseng cultured in paddy soil was low relatively compared with that of upland soil because of moisture injury in root during rainy season. Drainage class in soils generally divided into 6 classes, and it is possible to cultivate ginseng practically in imperfectly drainage class (IDC). This study carried out to select the varieties that is suitable for paddy soil, which is easy to be generated rusty-colored root and physiological-discolored leaf. Experiment plot arranged with the condition of soil humidity contents such as poorly drainage class (PDC) and imperfectly drainage class (IDC), and upland soil. Growth characteristics and root yield were investigated in four-year-old ginseng of varieties, Cheonpoong (CP), Yeonpoong (YP), Hwangsookjong (HS), and Jakyeongjong (JK). CP among four varieties showed the highest yield in IDC and CP was the lowest ratio in leaf discoloration and rusty-colored root. HS was followed by CP in the order of root yield, but it had the weakness that the ratio of rusty-colored root was high respectively.

• 한국약용작물학회지
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• 제26권4호
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• pp.291-295
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• 2018

Background: The use of Rehmannia glutinosa of the family Scrophulariaceae, in traditional medicine is well known. This study was conducted to elucidate the effect of air curing of the seed rhizome of R. glutinosa on its storability and yield. Methods and Results: The root of the R. glutinosa cultivar (Dagang) was harvested in at the end of November. The seed rhizomes were air cured for one to seven days. They were subsequently wrapped with newspaper and further stored in a plastic container at $1^{\circ}C$. It was observed that the weight loss and decay rates were significantly lower in the air cured seeds than in the untreated ones. Moreover, the decay rate of the control was approximately 50%, 120 days after storage. However. the decay rate of all the air cured treatment groups was less than 1%. Additionally, air curing led to an increase in the germination rate of the seeds and the root yield when compared with the untreated groups. Taken together, the ideal treatment period for air curing was found to be 3 days. Under these conditions, the germination rate and yield were 88.7% and 2,185 ㎏/10a, respectively. Conclusions: This study successfully demonstrated that the air curing of seed rhizomes can lead to a considerable increase in the storability and yield of R. glutinosa.

• Agricultural and Biosystems Engineering
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• 제7권1호
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• pp.18-26
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• 2006

In-field site-specific nitrogen (N) management increases crop yield, reduces N application to minimize the risk of nitrate contamination of ground water, and thus reduces farming cost. Real-time N sensing and fertilization is required for efficient N management. An 'on-the-go' site-specific N management system was developed and evaluated for the supplemental N application to com (Zea mays L.). This real-time N sensing and fertilization system monitored and assessed N fertilization needs using a vision-based spectral sensor and controlled the appropriate variable N rate according to N deficiency level estimated from spectral signature of crop canopies. Sensor inputs included ambient illumination, camera parameters, and image histogram of three spectral regions (red, green, and near-infrared). The real-time sensor-based supplemental N treatment improved crop N status and increased yield over most plots. The largest yield increase was achieved in plots with low initial N treatment combined with supplemental variable-rate application. Yield data for plots where N was applied the latest in the season resulted in a reduced impact on supplemental N. For plots with no supplemental N application, yield increased gradually with initial N treatment, but any N application more than 101 kg/ha had minimal impact on yield.

• 한국토양비료학회지
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• 제47권5호
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• pp.324-331
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• 2014

경관작물은 봄부터 늦은 가을까지 도로변, 하천변, 화단에 재배되어 우리 주변 환경을 아름답게 꾸며주는 역할을 수행하였으나 최근에는 대면적의 농경지에 재배되면서 넓은 면적에 재배가 가능한 작물들이 각광을 받기 시작하였다. 따라서 여름에 재배되는 작물 중에서 경관작물과 녹비작물로 이용 가능한 작물을 선발하고자 해바라기, 코스모스, 네마장황, 네마황, 세스바니아, 수수의 작물 생육특성, 녹비수량 및 질소생산량을 조사하였다. 경관작물의 초장은 수확시기가 늦을수록 증가하였으며 특히 네마장황, 코스모스, 해바라기, 수수는 100 cm 이상으로 컸다. 네마장황과 코스모스의 개화소요일수는 각각 50일, 53일로 짧아 가장 빨리 개화가 시작되었으며 개화기간은 50일 이상으로 길었다. 해바라기는 개화되는데 52일이 소요되어 짧았으나, 개화기간이 21일로 짧았다. 녹비수량과 질소생산량은 모든 작물에서 수확시기가 늦어질수록 증가하였다. 녹비수량은 네마장황, 수수, 해바라기에서 $7.2{\sim}7.5Mg\;ha^{-1}$로 가장 많았고 세스바니아에서 가장 적었으며, 질소생산량은 네마장황에서 $168.1kg\;ha^{-1}$으로 가장 많았다. 따라서, 개화특성, 녹비수량, 질소생산량을 기준으로 볼 때 여름용 경관작물 중 네마장황이 녹비와 경관 효과가 가장 우수하였다.