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문윤기(Youn-gi Moon),이재홍(Jae-hong Lee),최준근(Jun-keun Choi),강안석(An-seok Kang),한성숙(Seong-sook Han) 한국농약과학회 2010 농약과학회지 Vol.14 No.2
A field investigation was carried out for two years to analyze yield loss due to soybean anthracnose caused by Colletotrichum truncatum and to determine its economic threshold limit. Anthracnose severity in terms of % diseased pods was negatively correlated with yield, number of normal seeds per plant and number of pods per plant, and positively correlated with % abnormal seeds with correlation coefficients of -0.85, -0.78, -0.64, and 0.80, respectively. A simple linear regression model was obtained as Y=-1.7781X+164.22 with R²=0.8092, when the soybean yields (Y) were predicted using anthracnose severity (X) as an independent variable. The yield levels could be predicted as high as 80.92%. Based on this equation, spray threshold without economic considerations was estimated as 6.9 in % pods infected with anthracnose. Economic threshold limit and economic spray threshold able to compensate the costs of fungicide sprays were determined as 11.9% and 9.5%, respectively.
서영호 ( Young Ho Seo ),문윤기 ( Youn Gi Moon ),최준근 ( Jun Keun Choi ),강안석 ( An Seok Kang ) 한국환경농학회 2009 한국환경농학회지 Vol.28 No.2
Weed control is one of the important and difficult practices in environment-sound agriculture. This study was conducted to establish environment-sound weed control in paddy fields using rice bran pellet. Application of rice bran pellet at a rate of 1~3 Mg ha-1 reduced weed occurrence by 46~69% without using any chemical herbicide. However, rice bran application at a rate of greater than 2 Mg ha-1 increased protein content in milled rice and decreased palatability value. Therefore, fertilization rate before transplanting needs to be reduced from N-P2O5-K2O=55-45-40 kg ha-1 to 28-23-20 kg ha-1, in order to decrease protein content and increase palatability value without decreasing rice yield. Pyroligneous acid and brown rice vinegar had a relatively weak activity to inhibit weed emergence compared with rice bran. When butachlor herbicide was applied at a rate of 0.75 kg ha-1, 50% of recommended rate, co-application of rice bran pellet at a rate of 1 Mg ha-1 enhanced weed control value from 63% to 75%.
권순배,박동권,원헌섭,문윤기,이재홍,김용복,최병곤,서현택,고형래,이재국,이동운,Kwon, Soon-Bae,Park, Dong-Kwon,Won, Heon-Seop,Moon, Youn-Gi,Lee, Jae-Hong,Kim, Yong-Bog,Choi, Byoung-Gon,Seo, Hyun-Taek,Ko, Hyoung-Rai,Lee, Jae-Kook,Lee, Do 한국응용곤충학회 2018 한국응용곤충학회지 Vol.57 No.4
2011년 강원도 태백에서 최초 발생이 확인 된 사탕무씨스트선충은 고랭지 배추에 경제적 손실을 주는 주요 선충의 하나이다. 또한 2017년 고랭지 배추 재배지역에서 클로버씨스트선충도 분포가 확인 되었다. 본 연구는 씨스트선충의 확산을 조사하기 위하여 2013년부터 고랭지 배추 재배지역에서 씨스트선충의 발생지역 조사를 수행하였다. 아울러 2017년에는 종 특이 프라이머를 이용한 Real-time PCR기법으로 이들 두 선충 이외에 국내 분포가 알려진 콩씨스트선충의 검출지를 강원도 고랭지배추 주산지를 중심으로 조사하였다. 고랭지 배추재배지에서 씨스트선충류의 감염포장은 매년 증가하여 2017년 태백, 삼척, 정선, 강릉지역에서 분포가 확인되었으며 정선지역이 2017년까지 누적 감염 포장 수가 245개로 가장 많았다. PCR분석이 가능한 41점의 씨스트선충들 중 61%가 클로버씨스트선충이었으며 사탕무씨스트선충은 9.8%에 불과하였고, 콩씨스트선충도 29.3% 확인되었다. 따라서 기존에 알려졌던 씨스트선충 검출 포장의 일부는 콩씨스트선충이 감염되어 있을 것으로 보이며 클로버씨스트선충이 고랭지 배추재배지에 우점하는 것으로 나타나 향후 이 종에 대한 방제 대책이 필요할 것으로 생각된다. The sugar beet cyst nematode (SBCN), Heterodera schachtii first detected in Taebaek, Gangwon-do in 2011, is one of the major plant parasitic nematodes that cause economic damage to the Chinese cabbage in highland regions. In addition, the distribution of clover cyst nematode (CCN), H. trifolii was confirmed in the highland Chinese cabbage cultivated regions in 2017. In order to investigate the spread of cyst nematodes, this study has been conducted since 2013 in the highland Chinese cabbage cultivation area. In addition, in 2017, the Real-Time PCR technique with the species-specific primer was used to investigate those two cyst nematodes and the soybean cyst nematode (SCN), H. glycines which is known for its distribution in Korea, focusing on the main production regions of highland Chinese cabbage cultivation. The number of infected fields in the Chinese cabbage plantation in highland increased every year to confirm distribution in Taebaek, Samcheok, Jeongseon and Gangneung in 2017, and the cumulative number of infection fields reached 245 by 2017. Of the 41 possible cyst nematode samples for PCR analysis, 61% were CCN, only 9.8% of the SBCN and 29.3% of the SCN were identified. Therefore, some of the previously known SBCN or CCN discoveries are likely to have been infected with SCN. It is believed that the CCN needs to be controlled in the future as CCN have been found to be dominant species in the highland Chinese cabbage plantation regions.
강원지역의 꽃매미 발생상황과 동계 기온변화에 따른 발생양상
정태성 ( Tae Sung Jeong ),황미란 ( Mi Ran Hwang ),문윤기 ( Youn Gi Moon ),이재홍 ( Jae Hong Lee ),이남길 ( Nam Gil Lee ),권순배 ( Soon Bae Kwon ),김인종 ( In Jong Kim ),최병렬 ( Byeong Ryel Choi ) 한국토양동물학회 2015 한국토양동물학회지 Vol.19 No.1
Lycorma delicatula in Gangwon province occurred firstly in 2008 in Chuncheon and Wonju. Its occurrence increased to 36.8 ha in 2011, but decreased to 11.8 ha, 8.7 ha in 2012 and 2013, respectively. In 2014 and 2015, it is again on the increase as 22.1 ha and 47.2 ha. For clarifying changes of occurrences, this study was compared with minium temperature of winter season, hatching rate of over-wintering eggs and occurrence status in grape orchard from 2011 to 2015. Elapsed days in - 10℃ and - 19℃ below of winter season greatly influenced on hatchability of over-wintering eggs and showed close correlation for change of occurrence area in Gangwon province.
왕고들빼기, 갯기름나물, 곤달비, 곤드레의 채종시기가 종자 생산성에 미치는 영향
서현택 ( Hyun Taek Seo ),김세원 ( Se Won Kim ),문윤기 ( Youn Gi Moon ),박기덕 ( Ki Duk Park ),박기진 ( Ki Jin Park ) 강원대학교 농업생명과학연구원 2022 강원 농업생명환경연구 Vol.34 No.0
This study was conducted to investigate the effects of the timing of seed harvest on the seed productivity of Wang-godeulppaegi [Lactuca indica var. laciniata (O. Kuntze) Hara], Gaesgileumnamul (Peucedanum japonicum Thunb.), Gondalbi [Ligularia stenocephala (Maxim.) Matsum], and Gondeule [Cirsium setidens (Dunn) Nakai] . Wang-godulpagi and Gondeule were harvested at 15, 30, and 45 days after flowering; Gondalbi was harvested at 30, 45, and 60 days after flowering; and seaweed was harvested after 45, 60, and 90 days. In both the field and greenhouse, total and product seeding amounts were highest in the treatment area 30 days after flowering. The yield of products per 10a under field cultivation was high in the order 30 > 15 > 45 days after flowering. Comparatively, higher yields were obtained at the same time points under greenhouse cultivation. Under both field and greenhouse cultivation, the total and commercial yields of Gondeule were highest in the treatment area 30 days after flowering. Yield of products per 10a under field cultivation was high in the order 30 > 15 > 45 days after flowering, and again higher yields were obtained under greenhouse cultivation. For Gondalbi, the highest total and commercial yields under both field and greenhouse cultivation were obtained at 45 days after flowering in the order 45 > 60 > 30 days after flowering, with higher yields being obtained under greenhouse cultivation. For Gaesgileumnamul, the highest total and product yields under both field and greenhouse cultivation were obtained at 60 days after flowering, with higher yields being obtained under greenhouse cultivation. On the basis of these findings, it was considered suitable to harvest Wang-godeulppaegi and Gondeule after cutting at 30 days after flowering. In contrast, for Gondalbi and Gaesgileumnamul, seed productivity could be enhanced by delaying harvesting until approximately 45 and 60 days after flowering, respectively.