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Dimethomorph의 제형에 따른 고추 역병 방제 효과
박정용,류연주,류나현,이용세 대구대학교 생명과학연구소 2004 생명과학연구 Vol.3 No.1
Dimethomorph(DMM) is an effective Oomycete fungicide useful for the control of late blight of potato and pepper by preventative sprays. Efficacy of five formulations, suspension concentrate (DM150), wettable powder (DM250) and three different dispersible concentrates (DM630, DM631, DM632), were investigated in their biological activity against phytophthora blight of red-pepper in vitro and in vivo. Their in vitro biological activities against mycelial growth, zoosporangial formation and zoosporangial germination of Phytophthora capsici were similar. The incidence of late blight on red pepper plants was progressively increased from June 11 to August 8 in untreated plants. However, in the case of DMM treated plants diseased plants, were increased after July 11. When compared with that on July 11, the incidence of late blight on July 18 in the treated plants except in DM630 were increased drastically. This increase were thought to be the result of flooding with more than 80 mm rainfall at July 15. The incidence of late blight on July 29 in the treated plants were increased compared with that on July 18. These also thought to be the result of flooding with more than 100 mm rainfall on July 23. All of the tested DMM formulations showed similar high control value against the late phytophthora blight on red pepper plants in the field test until July 11. However, after flooding the test field, DM630 showed the greatest disease control efficacy. DM250 showed relatively poor disease control efficacy in the test. Therefore more studies on the DM630 formulation are needed.
권태룡,김경민,오중열,신동현,한증술,이문중,김창길 한국자원식물학회 2008 한국자원식물학회지 Vol.21 No.4
For the resistance test for Phytophthora blight of T1 and T2 transformants in pepper, Phytophthora blight fungus was inoculated to seedlings of the T1 and T2 transformants by concentration (density: zoospore 103/ml). Occurrence rate of blight at 5days after inoculation was 4.0 % in T1-1 line and 10.0% in T1-2 line, and its rate for 12 days after inoculation was 52.0% in T1-1 line, 64.0% in T1-2 line, respectively. Therefore, the lower occurrence rate to blight was enable to select resistant transformants in the some inoculation density (zoospore 103/ml), meanwhile 'Kumtap' and 'Subicho' were 100% in highest occurrence rate to blight. For field test, in which blight was commonly occurred, of the Youngyang Pepper Experiment Station, the acquired transformant resisting to blight was similar to characteristics of domestic varieties, 'Subicho' for fruit shape, but there are some differences in growth, days to flowering, fruit characteristics. Occurrence of blight in T2-1-6, and T2-4-9 lines was smaller approxmately 30% than commercial varieties, 'Kumtap', although occurrence of blight in field was showed higher difference among tested lines. In this study, we concluded that the transformants showing blight resistance selected from habitual field could be fixed at every generation, and the developed transformation system was also considered to develop transformants in pepper.
노지고추에서 고추역병 경감을 위한 녹비작물 호밀의 재배효과
권오훈 ( Kwon Oh-hun ),김찬용 ( Kim Chan-yong ),김영숙 ( Kim Young-suk ),원종건 ( Won Jong-gun ),정희영 ( Jung Hee-young ) 한국유기농업학회 2020 韓國有機農業學會誌 Vol.28 No.4
This study was carried out to evaluate the effect of rye as green manure crop on the improvement of soil environment and reduction of Phytophthora blight in red pepper of open field where Phytophthora blight occurred frequently. Soil physical properties such as bulk density and porosity were increased in rye cultivation. In addition, gaseous was increased but liquid was decreased compared with conventional cultivation. The analysis of phospholipid fatty acids extracted from soil showed that rye cultivation significantly increased relative abundance of microbial community and ratio of aerobic to anaerobic bacteria. Furthermore, ratio of saturated to unsaturated fatty acids and cyclo-fatty acids to precursor. the indicators of increasing in environmental stresses, were reduced in rye cultivated field. Occurrence of Phytophthora blight in rye cultivation was reduced 30.7% compared with conventional cultivation. These results suggest that rye cultivation in red pepper of open field where Phytophthora blight occurred can improve soil environment and reduce damage of Phytophthora blight.
Analysis of Soil mycoflora in Phytophthora Infested and Non-Infested Fields
이선주,김종식,홍승범,Lee, Seon-Ju,Kim, Jong-Shik,Hong, Seung-Berm 한국토양비료학회 2000 한국토양비료학회지 Vol.33 No.2
불건전 토양과 건전 토양의 환경을 이해하기 위해 자연적으로 역병에 감염되거나 감염되지 않은 고추와 토마토 시설재배지의 비근권토양, 근권토양, 근면을 채취하고 연구하였다. 시료는 경상남도의 시설재배지에서 1999년 4월에 채집되었으며, 진균의 분리는 희석평판법을 이용하였다. 각 작물 별 재배지에서 25 종의 진균이 분리되었으며 건전 시료보다는 감염 시료에서, 근권이나 근면토양보다 비근권토양에서 더 많은 수의 종이 분리되었다. 역병이 감염되지 않은 시료에서만 Trichoderma sp.가 분리되었으며 각 작물의 서식지별로 분리된 진균의 수는 다양하였다. Composition of fungal communities in three microhabitats such as soil, rhizosphere and rhizoplane were studied to understand the root environment of healthy and diseased plants in Phytophthora non-infested and infested fields, respectively. Samples were collected from the tomato- and red pepper-growing greenhouses in Kyungsang-Nam Province on April, 1999. Twenty-five species were isolated from each vegetation field using the dilution plate technique. There were a greater variety of species in infested fields than non-infested and in soils than in both rhizospheres and rhizoplanes. The number of species isolated were varied amongst the different microhabitats. A Trichoderma species was isolated only from non-infested fields.
Xenorhabdus nematophila K1 대사물질 3-(4-hydroxyphenyl)-propionic acid의 고추 역병과 탄저병에 대한 방제 효과
천원수,김도연,김용균,홍용표,이영근 한국식물병리학회 2013 식물병연구 Vol.19 No.3
3-(4-Hydroxyphenyl)-propionic acid (HPP) is a bacterial metabolite synthesized and released by an entomopathogenic bacterium Xenorhabdus nematophila K1. In this study, the control efficacy of HPP was tested against Phytophthora blight and anthracnose of red pepper plants. HPP suppressed mycelial growth of Phytophthora blight and anthracnose pathogens. Under natural sunlight condition, HPP maintained the antifungal activity on the diseases for at least twenty five days. The antifungal activity was not decreased even in the condition of soil-water. It was proved that HPP was able to penetrate the roots and travel upward of the red pepper plants. When HPP suspension was applied to soil rhizosphere before transplanting the red pepper seedlings or was regularly sprayed to the foliage of the plants with ten days interval, it resulted in significant reduction of the disease occurrences (Phytophthora blight and anthracnose) without any phytotoxicity. These results suggested that HPP can be developed to a systemic agrochemical against Phytophthora blight and anthracnose of red pepper plants. 3-(4-Hydroxyphenyl)-propionic acid (HPP)는 곤충 병원세균인 Xenorhabdus nematophila K1의 대사산물이다. 이물질의 고추의 역병과 탄저병에 대한 방제가능성을 평가하였다. HPP는 역병균과 탄저병균의 균사생장을 현저하게 억제하였다. 이 항균력은 자연 태양광 아래에서 25일이상 유지되었으며, 토양수 내에서도 상실되지 않았다. HPP의 고추 뿌리를 통한 식물체 내 침투 및 상향이행성이 입증되었다. HPP 현탁액을 고추의 근권토양에 관주하고 지상부에 10일 간격으로 살포하였을 때, 약해 발생 없이 역병과 탄저병 발생이 크게 감소되었다. 이러한 결과는 HPP를 고추 역병 및 탄저병 방제를 위한 침투성농약으로 개발할 가능성이 있음을 의미한다.
비닐터널 유인재배가 고추 역병과 탄저병의 발생에 미치는 효과
정성수,김주희,최동칠 한국식물병리학회 2010 식물병연구 Vol.16 No.1
노지피복 재배포장과 비닐터널유인 재배포장의 재배양식별 고추 탄저병과 역병의 발생정도를 조사하였다. 비닐터널유인재배포장의 초기 생육이 노지피복재배포장(관행)보다 월등히 우세하였다. 재배 양식별 고추 주요 병해인 탄저병과 역병의 발생정도를 조사한 결과 노지피복재 배포장에 비해 터널유인 재배한 포장에서 역병발생은 60.3%, 탄저병발생은 26.9% 경감효과가 있었다. 재배양식별 건과 수확량을 조사한 결과 노지피복 재배포장대비 48.5%가 많은 것으로 조사되었다. This survey was conducted to investigate effect of covering with polyvinyl (120 × 90 cm) on incidence of Phytophthora blight and anthracnose and growth. Early growth of pepper plant was superior when was covered with polyvinyl after planting. Incidence of anthracnose and Phytophthora blight was lower 26.9%and 60.3% in covering system than those in conventional culture system, respectively. A yield of dried red pepper was more 48.5% in cultured with covering system than that in conventional culture system.