Publisher : The Korean Society of Environmental Agriculture
DOI : 10.5338/KJEA.2013.32.1.35
Title & Authors
The Influence of Cover-crop (Vicia tetrasperma) Cultivation on the Occurrence of Major Insect Pests and their Natural Enemies in Pepper, Capsicum annum Han, Eun-Jung; Hong, Seong-Jun; Park, Jong-Ho; Cho, Jeong-Rae; Choi, Jae-Pil; Kim, Yong-Ki; Shim, Chang-Ki; Kim, Min-Jeong; Jee, Hyung-Jin;
BACKGROUND: In organic agriculture, various cover crops have been used to control weeds. In this study, we investigated the suppressive effects of Vicia tetrasperma (L.) Schred (Eolchigi wandu) on the occurrence of major insect pests and their natural enemies in pepper. METHODS AND RESULTS: To estimate the effect of cover-crop on arthropod diversities and occurrences of insect pest in pepper. V. tetrasperma was sowed as cover-crop plot October, 2008 and 2009. Control plot was kept bare in winter season and mulched with black plastic-film before transplanting red pepper seedlings. Pepper seedlings, Capsicum annuum, were transplanted on the 19th of May, 2009 and on the 20th of May, 2010, respectively. Five Yellow sticky traps were set and changed at 7 days interval. Densities of aphids and thrips and damaged fruit rates by oriental tobacco budworm, Helicoverpa assulta, were counted. CONCLUSION(S): Populations of aphids, thrips and braconid wasps were maintained high on V. tatrasperma before transplanting pepper seedlings and in early season of pepper. However, the densities of aphids on pepper in the control plot were much higher than in the cover-crop plot in the early stage of pepper. Damaged fruit rates by both of thrips and oriental tobacco budworm were not significantly different between the two experimental plots.
Cover-crop;Insect pest;Pepper;Vicia tetrasperma;
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