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Effects of ventilation systems and set point temperature of single-span plastic greenhouse on disease incidence, fruit quality and yield of oriental melon (Cucumis melo L.)
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 Title & Authors
Effects of ventilation systems and set point temperature of single-span plastic greenhouse on disease incidence, fruit quality and yield of oriental melon (Cucumis melo L.)
Yeo, Kyung-Hwan; Yu, In-Ho; Rhee, Han-Cheol; Choi, Gyeong-Lee; Lee, Seong-Chan; Lee, Jung-Sup;
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The ventilation systems composed three types of side vent (roll-up) `SV`, side vent+roof vent `SV+RV`, and side vent+roof fan `SV+RF` with 7.5 m spacing, with specific set point temperatures for ventilation: SV ( open / close), SV+RV or SV+RH ( open/ close for root ventilation and open / close for side vent). In the treatment of SV+RV, although the average daily maximum temperature inside the greenhouse temporarily increased by , thermal stress by high temperature did not occur and the disease incidence (%) of powdery mildew and downy mildew on the oriental melon were 25 - 75% lower than in the conventional SV treatment. In the SV treatment, the disease incidence (%) of powdery mildew and downy mildew were 1.4 - 7.7% and 4.2 - 15.9% for `Deabakkul`, and 20.3 - 22.8% and 2.8 - 11.3%, for `Ildeungkkul`. The yield for one month was higher in the treatment of SV+RV than those in other treatments, with values of 2,105 kg/10a for `Deabakkul` and 2,537 kg/10a for `Ildeungkkul`. The simultaneous treatment with side vent and roof vent resulted in 16.2% higher yield (18.1% higher marketable yield) than that in the SV treatment for `Deabakkul`.
Oriental melon (Cucumis melo L.);Single-span plastic greenhouse;Side vent;Roof ventilation;Roof vent;Roof fan;disease incidence (%);
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