Economic Threshold for the Diamondback Moth (Plutella xylostella L., Lepidoptera: Plutellidae) on Leaf Broccoli (Brassica oleracea var. botrytis italiana)

Autor:	Ju Rak Lim, Seong-Soo Cheong, Young-Hun Moon, Ju-Hee Kim, Gi-Kwon Lee, Seon Wu Choi, Gong-Jun Lee
Rok vydání:	2015
Předmět:	Integrated pest management Larva animal structures Diamondback moth biology Inoculation Economic threshold fungi food and beverages Plutella biology.organism_classification Lepidoptera genitalia Horticulture Agronomy Plutellidae parasitic diseases human activities
Zdroj:	Korean Journal of Applied Entomology. 54:19-24
ISSN:	2287-545X 1225-0171
DOI:	10.5656/ksae.2014.07.1.050
Popis:	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
Databáze:	OpenAIRE
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