양파 연작지의 분홍색뿌리썩음병 방제를 위한 담수처리 효과
Pink root disease of onion, a known worldwide constraint upon onion production, significantly reduces crop levels in the main Korea cultivation area. In order to examine the effect of flooding on incidence of pink root disease caused by Pyrenochaeta terrestris and on onion growth and on populations...
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Published in | Sigmulbyeong yeon'gu Vol. 13; no. 2; pp. 104 - 109 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | Korean |
Published |
한국식물병리학회
2007
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Subjects | |
Online Access | Get full text |
ISSN | 1598-2262 2233-9191 |
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Abstract | Pink root disease of onion, a known worldwide constraint upon onion production, significantly reduces crop levels in the main Korea cultivation area. In order to examine the effect of flooding on incidence of pink root disease caused by Pyrenochaeta terrestris and on onion growth and on populations of soil fungi, field experiments were conducted during two seasons, 2003/04 and 2004/05 at Onion Research Institute. Populations of soil fungi from fields were assayed on selective media. Flooding treatment was effective in reducing populations of P. terrestris, Pythium spp., and Rhizoctonia sp. in soil; fungal populations in soils flooded for 90 days were reduced to 1/2 to 1/3 of those in non-flooded soils. In nursery bed, protective activities of soils flooded for over 60 days were 93.5 to 99.2% and their pink root incidences were less than 5%, which were 1/11 to 1/18 of that in control. Increased yield of onion bulbs was associated with control of soil borne pathogenic fungi by flooding treatments. As flooding period was prolonged, bulb grade showed the tendency to increase. Soil flooding for over 60 days resulted in effective disease control, facilitated accurate planning of plant population in the field, extension of the growing-season and consequently higher yields of better quality. 양파 연작지 토양의 담수기간에 따른 분홍색뿌리썩음병의 방제효과, 양파의 생육 및 수량을 조사한 결과 토양병원균의 밀도변화는 담수기간이 길수록 균밀도의 감소효과가 뚜렷하여 처리 후 90일에는 무담수에 비해 $1/2{\sim}1/3$ 수준으로 감소하였지만 양파 재배후 균밀도는 담수직후 보다는 전반적으로 증가하는 경향을 보였다. 양파 육묘상 담수처리에 의한 분홍색뿌리썩음병의 방제효과는 담수 60일 이상 처리에서 $93.5{\sim}99.2%$였고, 뿌리이병율도 무담수에 비해 $1/11{\sim}1/18$ 수준으로 크게 감소하였다. 양파 재배포장에서의 발병율 또한 담수 60일 이상 처리에서 5% 미만으로 크게 감소하였다. 양파의 구중과 상품수량은 무담수에 비해 담수처리에서 증가되었으며, 담수기간이 길어질수록 대구의 비율이 늘어나는 경향을 보였다. 이와 같이 양파 분홍색뿌리썩음병이 심하게 발생하고 있는 연작지에 양파를 정식하기 전에 담수처리를 할 경우, 적어도 2년간, 60일 이상 담수처리를 하였을 때 효과적으로 분홍색뿌리썩음병균의 밀도와 병발생을 경감시킬 수 있으며, 정상적인 양파 육묘 및 생육에 의한 구비대로 수량 증수효과가 클 것으로 판단된다. |
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AbstractList | Pink root disease of onion, a known worldwide constraint upon onion production, significantly reduces crop
levels in the main Korea cultivation area. In order to examine the effect of flooding on incidence of pink root
disease caused by Pyrenochaeta terrestris and on onion growth and on populations of soil fungi, field experiments
were conducted during two seasons, 2003/04 and 2004/05 at Onion Research Institute. Populations of
soil fungi from fields were assayed on selective media. Flooding treatment was effective in reducing populations
of P. terrestris, Pythium spp., and Rhizoctonia sp. in soil; fungal populations in soils flooded for 90 days
were reduced to 1/2 to 1/3 of those in non-flooded soils. In nursery bed, protective activities of soils flooded for
over 60 days were 93.5 to 99.2% and their pink root incidences were less than 5%, which were 1/11 to 1/18 of
that in control. Increased yield of onion bulbs was associated with control of soil borne pathogenic fungi by
flooding treatments. As flooding period was prolonged, bulb grade showed the tendency to increase. Soil
flooding for over 60 days resulted in effective disease control, facilitated accurate planning of plant population
in the field, extension of the growing-season and consequently higher yields of better quality. KCI Citation Count: 1 Pink root disease of onion, a known worldwide constraint upon onion production, significantly reduces crop levels in the main Korea cultivation area. In order to examine the effect of flooding on incidence of pink root disease caused by Pyrenochaeta terrestris and on onion growth and on populations of soil fungi, field experiments were conducted during two seasons, 2003/04 and 2004/05 at Onion Research Institute. Populations of soil fungi from fields were assayed on selective media. Flooding treatment was effective in reducing populations of P. terrestris, Pythium spp., and Rhizoctonia sp. in soil; fungal populations in soils flooded for 90 days were reduced to 1/2 to 1/3 of those in non-flooded soils. In nursery bed, protective activities of soils flooded for over 60 days were 93.5 to 99.2% and their pink root incidences were less than 5%, which were 1/11 to 1/18 of that in control. Increased yield of onion bulbs was associated with control of soil borne pathogenic fungi by flooding treatments. As flooding period was prolonged, bulb grade showed the tendency to increase. Soil flooding for over 60 days resulted in effective disease control, facilitated accurate planning of plant population in the field, extension of the growing-season and consequently higher yields of better quality. 양파 연작지 토양의 담수기간에 따른 분홍색뿌리썩음병의 방제효과, 양파의 생육 및 수량을 조사한 결과 토양병원균의 밀도변화는 담수기간이 길수록 균밀도의 감소효과가 뚜렷하여 처리 후 90일에는 무담수에 비해 $1/2{\sim}1/3$ 수준으로 감소하였지만 양파 재배후 균밀도는 담수직후 보다는 전반적으로 증가하는 경향을 보였다. 양파 육묘상 담수처리에 의한 분홍색뿌리썩음병의 방제효과는 담수 60일 이상 처리에서 $93.5{\sim}99.2%$였고, 뿌리이병율도 무담수에 비해 $1/11{\sim}1/18$ 수준으로 크게 감소하였다. 양파 재배포장에서의 발병율 또한 담수 60일 이상 처리에서 5% 미만으로 크게 감소하였다. 양파의 구중과 상품수량은 무담수에 비해 담수처리에서 증가되었으며, 담수기간이 길어질수록 대구의 비율이 늘어나는 경향을 보였다. 이와 같이 양파 분홍색뿌리썩음병이 심하게 발생하고 있는 연작지에 양파를 정식하기 전에 담수처리를 할 경우, 적어도 2년간, 60일 이상 담수처리를 하였을 때 효과적으로 분홍색뿌리썩음병균의 밀도와 병발생을 경감시킬 수 있으며, 정상적인 양파 육묘 및 생육에 의한 구비대로 수량 증수효과가 클 것으로 판단된다. |
Author | 문진성(Jin-Seong Moon) 송원두(Wan-Doo Song) 이종태(Jong-Tae Lee) 하인종(In-Jong Ha) 천미건(Mi-Geon Cheon) 이찬중(Chan-Jung Lee) 황선경(Seon-Gyeong Whang) |
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DocumentTitle_FL | Influence of Soil Flooding on Control of Pink Root Disease in Onion Crop |
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Keywords | Pyrenochaeta terrestris Flooding Onion Pink root |
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Title | 양파 연작지의 분홍색뿌리썩음병 방제를 위한 담수처리 효과 |
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