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Control Effect of Environmental-friendly Organic Materials against Major Pear Diseases  

Yoon, Deok-Hoon (Research Institute for the Far East Asian Bio-Resources, Hankyong National University)
Patk, Hae-Jun (Department of Horticulture, Hankyong National University)
Nam, Ki-Woong (Research Institute for the Far East Asian Bio-Resources, Hankyong National University)
Publication Information
The Korean Journal of Pesticide Science / v.14, no.4, 2010 , pp. 401-406 More about this Journal
Abstract
This study was conducted to investigate the control effects of the environmental-friendly materials against major diseases of pear and to elucidate factors related to spore disperse of pear scab and pear rust. Spore disperse was deeply related ambient temperature in the early stage of disease occurrence and the maximum spore disperse was affected greatly by the air humidity, Percent of infected leaves of pear scab in plot treated with Trichoderma harzianum-YC459 was 29.3% and 43.3% in plot treated with Sulfur-80%. Two formulations above-mentioned were less effective to control pear scab than the chemical pesticide, hexaconazole. Control effect in plots single- and mixed-treated with Trichoderma harzianum-YC459, Sulfur-80% and hexaconazole against pear scab were compared with that in plot treated with chemicals by conventional application schedule in pear orchard. The incidence of pear scab was lower in plot treated with the environmental-friendly materials than that of untreated plot. However there was no significant difference among the treatments at the 5% level. Application of Sulfur-80% reduced significantly the incidence of pear scab (7.8%) compared to that (10.3%) in plot treated by conventional application schedule in organically cultivated pear orchard. Alternative application of Trichoderma harzianum-YC459 and Sulfur-80% (4.3%) suppressed the incidence of pear rust than that (7.1%) in plot treated by conventional application schedule in organically cultivated pear orchard.
Keywords
pear; organic; environmental-friendly organic material; disease; control;
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Times Cited By KSCI : 4  (Citation Analysis)
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