Phytophagous Insect Associated with Magnoliopsida and Liliopsida Weeds on Vegetable Crops in Haman and Sancheong, Gyeongnam Province

Soo Jeong  Ahn1   Sung Geun  Lee2   Hyung Woo  Kim2   Jeum Kyu  Hong2,4   Jeung Joo  Lee3,5   Sung Hwan  Choi25,*   

1Agricultural Corporation ERANG Co., Ltd., Changwon 51217, Korea
2Division of Horticulture, College of Agriculture and Life Science, Gyeongsang National University, Jinju 52725, Korea
3Department of Plant Medicine, College of Agriculture and Life Science, Gyeongsang National University, Jinju 52828, Korea
4Agri-Food Bio Convergence Institute, Gyeongsang National University, Jinju 52725, Korea
5Institute of Agriculture and Life Sciences(IALS), Gyeongsang National University, Jinju 52828, Korea

Abstract

A total of 11 families and 26 species of weeds were surveyed in the upland crop cultivation areas of Haman (35°18'00.4"N 128°17'43.6"E) and Sancheong (35°23'39.3"N 127°54'05.3"E) in Gyeongnam. In the Haman area, the important value (IV) of the dominant colony of the Chenopodiaceae family was 21.60 for Chenopodium album and Chenopodium ficifolium, respectively, and the important value (IV) of the dominant colony of the Poaceae family was Setaria viridis and Echinochloa crus-galli (33.32). In the Sancheong area, the important value (IV) of the dominant colony of the Chenopodiaceae family was 27.84 for Chenopodium album and Chenopodium ficifolium, respectively, and the important value (IV) of the dominant colony of the Poaceae family was Echinochloa crus-galli (36.10) and the Setaria viridis (34.54). A total of 3,519 insects were observed and collected from weeds in Haman and Sancheong areas in Gyeongsangnam-do, with a total of 4 orders, 23 families, and 68 species. The classification group with the largest number of species surveyed was Hemiptera (35 species, 51.5%, and 2,886 individuals, 82.0%), followed by Lepidoptera(13 species, 19.1%, and 188 individuals, 5.3%), Coleoptera (11 species, 16.2%, and 87 individuals, 2.5%), and Orthoptera (9 species, 13.2%, and 358 individuals, 10.2%) . The first dominant species in the weed dominant colony of the Chenopodiaceae family was Orthotylus flavosparsus, and the first dominant species in the weed dominant colony of the Poaceae family was Stenotus rubrovittatus. The fact that the Hemiptera shows a high ratio in species and individuals means that it feeds on weeds or uses them as habitat compared to other orders. Among the 68 insect species that occur on weeds in this survey, 43 species (63.2%) were identified as agricultural insect pests. This information on insect occurrence is thought to contribute to establishing an efficient management plan for weeds as well as crops.

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