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http://dx.doi.org/10.5423/RPD.2002.8.4.254

Incidence of Pear Black Necrotic Leaf Spot and its Control by Top-Grafting  

Nam, Ki-Woong (농촌진흥청 농업과학기술원 식물병리과)
Myung, Inn-Shik (농촌진흥청 농업과학기술원 식물병리과)
Publication Information
Research in Plant Disease / v.8, no.4, 2002 , pp. 254-257 More about this Journal
Abstract
It was conducted to investigate an effective control measure of the black necrotic leaf spot disease on pear, The disease commonly occurred in major cultivation areas of Korea revealed 5.6 ％ infection rate on the widely growing cultivar Niikata. The disease substantially reduced yield and quality of pear fruits, however, it has never been controlled by chemicals. Renewal of the pear trees to resistant cultivar was found to be the most effective to control the disease. As a result, the disease did not developed for 2 years on the diseased Niikata that was top-grafted with resistant cultivars Soowhang and Whasan. lop-grafting with resistant cultivars was recommended far the pear trees showing over 80％ infection rate and lower than 70% fruit yield compare to standard production.
Keywords
a virus disease; black necrotic leaf spot; disease management; pear;
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