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한국콩연구회지

Korea Soybean Digest

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수록정보
수록범위 : 1권0호(1984)~33권1호(2017) |수록논문 수 : 586
한국콩연구회지
33권1호(2017년 02월) 수록논문
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1파라과이의 농업환경 및 콩 등 주요작물 생산현황

저자 : 박금룡 ( Keum-yong Park ) , 김현태 ( Hyun-tae Kim ) , 한원영 ( Won-young Han ) , 신성휴 ( Seong-hyu Shin )

발행기관 : 한국콩연구회 간행물 : 한국콩연구회지 33권 1호 발행 연도 : 2017 페이지 : pp. 1-18 (18 pages)

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The total land area of Paraguay is 406,752 square km. The country is divided in two major geographical regions, with distinct topography and geology, by the south-flowing Paraguay River. There is a pronounced rainfall gradient right across Paraguay. Mean annual rainfall increases from about 400 mm in the north-west to 1,700 mm in the south-east. In the Chaco, about 80 percent falls in summer, whereas in the south-east comer mean monthly rainfall is more equally distributed, with a slight depression in the driest months, July and August. The growing season lasts from October to March in the Chaco. Typical crops are sorghum, cotton and groundnuts. In eastern Paraguay, arable lands are often cropped twice a year under rainfed conditions, with soybean, cotton or maize, followed by a winter crop, such as temperate cereals. Mean annual temperatures vary from 25.9℃ in the north (Bahia Negra) to 21.4℃ in the north-eastern comer of the oriental region (Pedro Juan Caballero). Summers are hot, even very hot. In winter, night frosts (to an absolute minimum temperature of - 6.0℃) occur, except in the extreme north east. Aerial parts of tropical grasses are generally burnt off by frost. Paraguay is the world` s sixth producer and the fourth largest exporter of soybeans. In the past ten years, the area under soy cultivation more than doubled from 1,870,000 ha in 2004 to 3,500,000 ha in 2014. Paraguay` s major soy producing states are Alto Parana, Itapua and Canindeyu, respectively producing 2,036,618, 1,411,313 and 1,401,086 tonnes soybeans per year. The frontiers of soy expansion are moving towards the center of the country, more precisely in Caazapa, San Pedro and Caaguazu. Agricultural products account for 90% of the value of Paraguayan exports, of which about 57% relates to primary export products such as soy beans, meat and cotton (16.6% of GDP).

2콩 점무늬병 방제기술 개발

저자 : 이영수 ( Young-soo Lee ) , 김대균 ( Dae-gyun Kim ) , 김성기 ( Sung-kee Kim ) , 조영철 ( Young-cheol Cho ) , 최병열 ( Byoung-rourl Choi )

발행기관 : 한국콩연구회 간행물 : 한국콩연구회지 33권 1호 발행 연도 : 2017 페이지 : pp. 21-29 (9 pages)

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Frogeye leaf spot(FLS), caused by Cercospora sojina is one of the most important foliar disease in soybean(Glycine max). This study was conducted to develop effective fest control method including screening the fungicides, biological control agent, prediction of the optimal control time, and cultivation method for the low-input pesticide control of FLS. The results are summarized as follows. Benomyl(WP) and thiophanate-methyl + triflumizole(WP) were effective on the control of FLS, and their control value were 91.2%, 85.9% respectively. Thiophanate-methyl + triflumizole(WP), Bacillus subtilus, Paenibacillus polymyxa and edible oil + yolk mixture inhibited the mycelial growth of C. sojina strongly at 25℃ on PDA medium. The control value of thiophanate-methyl + triflumizole(WP), B. subcilus, P. polymyxa and edible oil+yolk were 92.4%, 80.2%, 78.1%, 57.6% respectively in seedling test under greenhouse conditions. In field, their control value were less than greenhouse conditions and the control value of thiophanate-methyl + triflumizole(WP), B. subtilus, P. polymyxa and edible oil+yolk were 83.4%, 45.6%, 48.4%, 48.8% respectively. The fungicide application timing affected not only the disease rate but also the yield of soybean. The optimal control timing was the middle July when FLS symptom begins, and it needs second control at the late July. Controling in the optimal timing gave us higher control effect, 81.8% at the half concentration of fungicides. Black vinyl mulching and trimming the stem and leaves at the twenty days before blooming period were significantly effected on the reduction of FLS, and the disease rates were non mulching + non cutting 55.8% > non mulching + cutting 35.4% > black vinyl mulching + non cutting 17.6% > black vinyl mulching + cutting 15.8% respectively. For the low-input pesticide cultivation of soybean, It is good to control FLS at the middle July and cultivating soybean by means of black vinyl mulching and cutting at the twenty days before blooming period.

3콩 점무늬병 판별품종 선발 시험

저자 : 김성기 ( Sung-kee Kim ) , 이영수 ( Young-soo Lee ) , 이종형 ( Jung-hyeong Lee ) , 김진원 ( Jin-won Kim ) , 김지성 ( Ji-seong Kim ) , 정우석 ( Woo-suk Jung )

발행기관 : 한국콩연구회 간행물 : 한국콩연구회지 33권 1호 발행 연도 : 2017 페이지 : pp. 31-39 (9 pages)

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Frogeye leaf spot(FLS) caused by phytopathogenic fungus Cercospora sojina Hara is and important foliar disease in many soybean[Glycine max (L.) Merr.] production areas of the world including the region of northern part of Gyeonggi-do. It can appear to be genetically variable and cause severe yield losses, but have been not any study about differential variety or genetic resistance in Korea. This study was conducted to develop the differential variety of soybean to aid in race identification of the FLS. The results are summarized as follows. We had collected 141 infected soybean leaves from the 52 major soybean cultivation areas including the region of northern part of Gyeonggi-do, and six FLS races(Cs-02, Cs-10, Cs-14, Cs-l6, Cs-19, Cs-20) were identified after due consideration of the morphological feature and the C. sojina-soybean interaction(pathogenicity). The six FLS races could be divided using eight differential cultivars(`Taegwang`, `Dachae`, `Daemang`, `Anpyeong`, `Chungja No.3`, `Geomgang`, `Jangwon`, `Bogwang`) had been bred in Korea. The genetic similarity showed an high positive correlation between the pathogenicity of these differential cultivars. and this will provide soybean breeders an opportunity to use these gene-specific primers for the selection of FLS resistant variety.

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