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http://dx.doi.org/10.5423/RPD.2004.10.2.142

Effect of Potassium Phosphonate on the Control of Potato Basal Stem Rot(Pythium myriotylum) in Hydroponics  

Hong, Soon-Yeong (제주도농업기술원 농산물원종장)
Kang, Hyeong-Sik (제주도농업기술원 농산물원종)
Kang, Yong-Kil (제주대학교 농업생명과학대)
Jee, Hyeong-Jin (농업과학기술원 식물병리과)
Publication Information
Research in Plant Disease / v.10, no.2, 2004 , pp. 142-144 More about this Journal
Abstract
Effect of potassium phosphonate on control of potato basal stem rot caused by Pythium myriotylum in hydroponics system was evaluated at spring and fall cultivation in Jeju island in 2001. Potassium phosphonate 200 ppm treatment, which was directly supplemented into the nutrient solution, showed 90.5%, and 100 ppm treatment showed 50.5% control value in spring cultivation. Fall cultivation, potassium phosphonate 200 ppm treatment showed 100%, and 100 ppm treatment showed 69.9% control value. Potassium phosphonate 200 ppm treatment, basal stem rot of potato started to develop 10 days ofter inoculation into the hydroponics system showed 8.0% in infection rate. Potassium phosphonate 100 ppm treatment, after 5 days showed 10.0%, and after 10 days showed 20.0% infection rate, but the non-treated was after 5 days showed 56.7%, and after 10 days showed 96.9% infection rate.
Keywords
Basal stem rot; Potassium phosphonate; Potato;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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