Economic Injury Level of Mamestra brassicae L. (Lepidoptera: Noctuidae) on Early Stage of Cabbage (Brassica oleracea L. var capitata L.)

Tai-ho, Kang; Jeon, Heung-Yong; Kim, Hyeong-Hwan; Yang, Chang-Yeol; Kim, Dong‐Soon

doi:10.5656/ksae.2009.48.2.237

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…. 담배거세 미나방의 유충은 두과작물인 팥 포장에 발생하여 잎, 꽃 및 꼬투 리를 가해하여 피해를 주며, 유충 영기별 섭식량의 82%가 6령 유충기간에 이루어진다 (Jun and Koji, 1989 (Lee et al, 2006), 배추의 파밤나방 (Kim et al, 2009), 배추흰나비 (Kwon et al, 2008), 복숭아혹진딧물 (Jeon et al, 2008), 파의 파밤나방 (Kim et al, 2007), 시설잎들깨의 들깨진딧물 (Choi et al, 2006), 콩의 담배거세미나방 (Lee et al, 2006), 가지의 아메리카잎굴파 리 (Lim et al, 2007), 양배추의 도둑나방 (Kang et al, 2009 DAT means days after treatment. b) Means followed by the same letter are not significantly different at the 5% level by DMRT.…”

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Control Thresholds for Managing Common Cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) on Chinese Cabbage

Choi¹,

Kim²,

Kim³

et al. 2011

Korean journal of applied entomology

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This study aimed to estimate control thresholds for managing common cutworm, Spodoptera litura Faricius (Lepidoptera: Noctuidae) at different larval densities and growth stages of Chinese cabbage in field conditions. The percent yield reduction (Y) of Chinese cabbage infested by different densities of S. litura (X, no. of larvae/100 plants) for three weeks were estimated by Y=-21.85X+1300 (R2=0.997) 5 days after transplanting and Y=-12.1X+1382 (R2=0.998) 20 days after transplanting. Based on the relationships between the densities of S. litura larvae and the yield index of chinese cabbage, the number of larvae (2nd to 3rd instar) which caused 5% loss of yield was estimated as 2.9/100 plants 5 days after transplanting, and 5.6/100 plants 20 days after transplanting.

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Control Thresholds for Managing Common Cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) on Chinese Cabbage

Choi¹,

Kim²,

Kim³

et al. 2011

Korean journal of applied entomology

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Economic Injury Level of the Striped Cabbage Flea Beetle, Phyllotreta striolata (Coleoptera: Chrysomelidae), on Chinese Cabbage

Lee¹,

Kim²,

Hong³

et al. 2014

Korean journal of applied entomology

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This study was conducted to determine the economic injury levels and control thresholds for the striped cabbage flea beetle, Phyllotreta striolata (Coleoptera: Chrysomelidae), on Chinese cabbage at two different planting times. The number of inoculated adults per 10 cabbages was 0, 2, 4, 8, and 16 at the early developmental stage of the cabbage5 days after planting) and 0, 10, 20, 30, and 40 at the middle developmental stage (30 days after planting). Damages to the leaves at the first inoculation were 2.5-21.1% and at the second inoculation were 1.8-26.3% after harvesting. The linear relationships between population density and yield reduction were as follows: Y = 1.3475X + 2.135 (R 2 = 0.8699) at the early developmental stage and Y = 0.703X -1.78 (R 2 = 0.966) at the middle developmental stage. On the basis of these results, the economic injury levels caused 5% loss of yield; there were 2.1 adults per 10 Chinese cabbage at the early developmental stage and 9.6 adults per 10 Chinese cabbage at the middle developmental stage.

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Economic Injury Level of Mamestra brassicae L. (Lepidoptera: Noctuidae) on Early Stage of Cabbage (Brassica oleracea L. var capitata L.)

Cited by 2 publications

References 5 publications

Control Thresholds for Managing Common Cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) on Chinese Cabbage

Control Thresholds for Managing Common Cutworm, Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) on Chinese Cabbage

Economic Injury Level of the Striped Cabbage Flea Beetle, Phyllotreta striolata (Coleoptera: Chrysomelidae), on Chinese Cabbage

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