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http://dx.doi.org/10.11625/KJOA.2012.20.4.655

Study on the Control of Leaf Mold, Powdery Mildew and Gray Mold for Organic Tomato Cultivation  

Hong, Sung-Jun (국립농업과학원 유기농업과)
Park, Jong-Ho (국립농업과학원 유기농업과)
Kim, Yong-Ki (국립농업과학원 유기농업과)
Jee, Hyeong-Jin (국립농업과학원 유기농업과)
Han, Eun-Jung (국립농업과학원 유기농업과)
Shim, Chang-Ki (국립농업과학원 유기농업과)
Kim, Min-Jeong (국립농업과학원 유기농업과)
Kim, Jung-Hyun (국립농업과학원 유기농업과)
Kim, Seung-Hyun (제주 동부농업기술센터)
Publication Information
Korean Journal of Organic Agriculture / v.20, no.4, 2012 , pp. 655-668 More about this Journal
Abstract
Foliar diseases are major constraints to profitable organic tomato production. Especially, powdery mildew, leaf mold and gray mold of tomato occur severely on organic cultured tomatoes in Korea. This study was conducted to develop organic tomato cultivation technology using environmental-friendly disease control methods (resistance cultivar planting, air circulation fan installation, oil-egg yolk mixtures, and microbial agents). When tomatoes were cultivated in plastic film house installed with air circulation fan, daily range of temperature was decreased by $2{\sim}7^{\circ}C$, average relative humidity was decreased by 1~5% compared to those in plastic house without air circulation fan. Consequently, incidence of tomato leaf mold and tomato gray mold was reduced by 55.0% and 24.4%, respectively. Control effect of microbial agents and oil-egg yolk mixtures against major tomato diseases was examined in plastic house. As a result, the control value of microbial agents against tomato gray mold and tomato leaf mold showed at the range of 49.0~55.9 %(gray mold) and 39.2~58.2%(leaf mold), respectively. The control value of oilegg yolk mixtures against tomato powdery mildew showed 97.6%. Fifteen tomato cultivars were evaluated for disease resistance against leaf mold and powdery mildew in organically cultivated tomato field. Among 15 tomato cultivars, seven cultivars including 'Super-top' were found to be high resistant to tomato leaf mold. Also 'Powerking', one of fifteen tomato cultivars, showed to be high resistant to tomato powdery mildew.
Keywords
organic tomato; powdery mildew; leaf mold; gray mold; air circulation fan; resistance cultivar;
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Times Cited By KSCI : 13  (Citation Analysis)
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