- Volume 54 Issue 1
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Economic Threshold for the Diamondback Moth (Plutella xylostella L., Lepidoptera: Plutellidae) on Leaf Broccoli (Brassica oleracea var. botrytis italiana)
잎브로콜리에서 배추좀나방 요방제 수준 설정
- Choi, Seon Wu (Jeollabuk-do Agricultural Research and Extension Services) ;
- Lim, Ju Rak (Jeollabuk-do Agricultural Research and Extension Services) ;
- Kim, Ju-Hee (Jeollabuk-do Agricultural Research and Extension Services) ;
- Lee, Gong-Jun (Jeollabuk-do Agricultural Research and Extension Services) ;
- Moon, Young-Hun (Jeollabuk-do Agricultural Research and Extension Services) ;
- Cheong, Seong-Soo (Jeollabuk-do Agricultural Research and Extension Services) ;
- Lee, Gi-Kwon (Jeollabuk-do Agricultural Research and Extension Services)
- 최선우 (전라북도농업기술원) ;
- 임주락 (전라북도농업기술원) ;
- 김주희 (전라북도농업기술원) ;
- 이공준 (전라북도농업기술원) ;
- 문영훈 (전라북도농업기술원) ;
- 정성수 (전라북도농업기술원) ;
- 이기권 (전라북도농업기술원)
- Received : 2013.07.17
- Accepted : 2015.01.25
- Published : 2015.03.01
This study was conducted to estimate the economic injury level (EIL) to leaf broccoli (leaf vegetable) by the diamondback moth (Plutella xylostella L.) in 2007 and obtain basic data for pest management. To investigate the relationship between initial density of diamondback moth larvae and broccoli leaf yield, experimental plots with five treatments (0, 0.5, 1.0, 1.5 and 2.0 larvae per plant) as initial density were established. We inoculated larvae on cheesecloth covering to survey changes in larval density. When grown for consumption, leaves of broccoli are harvested in periods. High levels of larvae were associated with significant reductions in leaf yield. There were 0%, 15%, 35%, 42%, 44% yield reductions due to a density of 0, 0.5, 1.0, 1.5, 2.0 diamond back moth larvae per plant, respectively, 25 days after larva inoculation. The regression equation used to predict leaf yield based on the number of initial larvae per plant was y = 1636-394x(
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