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류장발(Jangbal Ryu),장정원(Jungwon Jang),박도규(Dokyu Park),최정임(Jungim Choi) 한국양봉학회 2007 韓國養蜂學會誌 Vol.22 No.2
Flowering characteristics of Evodia daniellii Hemsley and foraging activity of honeybees were investigated in 2004 and in 2005 at the Daegu University and obtained following conclusion. 1. Evodia daniellii Hemsley is a hermaphrodite species. Male flowers of E. daniellii bloom early compared with the female flowers. Female flowers bloom one or ture days after male flowers leave blooming. 2. The male flowers bloomed for 21 days while the female flowers in 2004, bloomed for 8 days. 3. The male flowers bloomed for 19 days while the female flowers in 2005, bloomed for 12 days. 4. Early blooming trees were 9 trees, while late bloming trees were 6 trees in 2004. Early blooming trees were 23 trees, while late bloming trees were 13 trees in 2005. The early blooming 9 trees in 2004 bloomed early in 2005, while the 3 late blooming trees among 6 trees in 2004 blomed late in 2005. 5. Foraging activity of honeybees started 7:00 a.m. and ended 7:00 p.m The activity showed two peaks, one in the morning and the other in the afternoon, which was lower than the morning peak. 6. Foraging activity of honeybees started from July 5th to August 29th.
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류장발(Ryu Jangbal),장정원(Jungwon Jang),신수아(Sua Shin) 한국양봉학회 2008 韓國養蜂學會誌 Vol.23 No.3
This research on 114 trees of Sapium sebiferum (L.) Roxb lining a street Dusan cross, Suseong-Gu, Daegu. We investigated the flowering-date, flowering-period of each tree, and investigated honeybees activity on 23 trees. This tree is monoecious and 2~4 inflorescence (male flower) bloomed second-flower after primary flowering. The second-flower bloomed 91 trees among 114 trees. A primary-male flower bloomed more longer than the second-male flower did. While primary blooms 25 days, second-male flower does 18days. 56 days bloomed from June 24 to August 19. Each tree bloomed 40 days in average. Early flowering trees were 10 and late flowering trees were 6. 11 trees bloomed over 50 days. The activity of the honeybees were reduced if it over the 35°C.
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