Current status of insect pests attacking green bunching onion in central and southern Vietnam

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Green bunching onion (or Welsh onion) Allium fistulosum is traditionally an important vegetable in Vietnam. The present study was undertaken to survey the current status of insect pests on green bunching onion in the country. Survey was conducted in conventional fields in central and southern Vietnam. The most widespread pest was Stone leek leafminer Liriomyza chinensis, which occurred all lowland sites investigated except Da Lat, a highland site in central Vietnam. Although insecticides were intensively applied, the percentage of the occurrence in green onion fields was 100% in Bien Hoa, Hue, Huong An, and Quang Nam. In Dalat, L. huidobrensis instead was widely found in Allium fistulosum and A. cepa. Serious infestation by lepidopterans often occurred, and the main species was beet armyworm Spodoptera exigua, which was widely found in lowland areas. Infestation by S. exigua was heavier in summer than in spring. Damage by S. litura was observed in all localities. Helicoverpa armigra infested green bunching onion in Hue though it was rare. Thrips were rather a minor pest though it was abundant in Quang Nam. No pest aphids were confirmed. Taken together, management of leafminer and lepidopteran pests is crucial to stable production of marketable green bunching onions. Current problems associated with insect pest control in Vietnam are discussed, and the importance of IPM practices is emphasized. A series of color photographs of pests and the damage they can cause are presented to facilitate identification of the pest.

Original languageEnglish
Pages (from-to)275-283
Number of pages9
JournalJournal of the Faculty of Agriculture, Kyushu University
Volume51
Issue number2
Publication statusPublished - Oct 1 2006

Fingerprint

Onions
Vietnam
onions
insect pests
Insects
Spodoptera exigua
pests
Allium fistulosum
leafminers
Allium
lowlands
pest identification
Lepidoptera
Liriomyza
Japanese bunching onions
Helicoverpa
green onions
leeks
Spodoptera litura
Thysanoptera

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Agronomy and Crop Science

Cite this

@article{9ddc9e682b55446ab1bed566ac7d391b,
title = "Current status of insect pests attacking green bunching onion in central and southern Vietnam",
abstract = "Green bunching onion (or Welsh onion) Allium fistulosum is traditionally an important vegetable in Vietnam. The present study was undertaken to survey the current status of insect pests on green bunching onion in the country. Survey was conducted in conventional fields in central and southern Vietnam. The most widespread pest was Stone leek leafminer Liriomyza chinensis, which occurred all lowland sites investigated except Da Lat, a highland site in central Vietnam. Although insecticides were intensively applied, the percentage of the occurrence in green onion fields was 100{\%} in Bien Hoa, Hue, Huong An, and Quang Nam. In Dalat, L. huidobrensis instead was widely found in Allium fistulosum and A. cepa. Serious infestation by lepidopterans often occurred, and the main species was beet armyworm Spodoptera exigua, which was widely found in lowland areas. Infestation by S. exigua was heavier in summer than in spring. Damage by S. litura was observed in all localities. Helicoverpa armigra infested green bunching onion in Hue though it was rare. Thrips were rather a minor pest though it was abundant in Quang Nam. No pest aphids were confirmed. Taken together, management of leafminer and lepidopteran pests is crucial to stable production of marketable green bunching onions. Current problems associated with insect pest control in Vietnam are discussed, and the importance of IPM practices is emphasized. A series of color photographs of pests and the damage they can cause are presented to facilitate identification of the pest.",
author = "Takatoshi Ueno",
year = "2006",
month = "10",
day = "1",
language = "English",
volume = "51",
pages = "275--283",
journal = "Journal of the Faculty of Agriculture, Kyushu University",
issn = "0023-6152",
publisher = "Faculty of Agriculture, Kyushu University",
number = "2",

}

TY - JOUR

T1 - Current status of insect pests attacking green bunching onion in central and southern Vietnam

AU - Ueno, Takatoshi

PY - 2006/10/1

Y1 - 2006/10/1

N2 - Green bunching onion (or Welsh onion) Allium fistulosum is traditionally an important vegetable in Vietnam. The present study was undertaken to survey the current status of insect pests on green bunching onion in the country. Survey was conducted in conventional fields in central and southern Vietnam. The most widespread pest was Stone leek leafminer Liriomyza chinensis, which occurred all lowland sites investigated except Da Lat, a highland site in central Vietnam. Although insecticides were intensively applied, the percentage of the occurrence in green onion fields was 100% in Bien Hoa, Hue, Huong An, and Quang Nam. In Dalat, L. huidobrensis instead was widely found in Allium fistulosum and A. cepa. Serious infestation by lepidopterans often occurred, and the main species was beet armyworm Spodoptera exigua, which was widely found in lowland areas. Infestation by S. exigua was heavier in summer than in spring. Damage by S. litura was observed in all localities. Helicoverpa armigra infested green bunching onion in Hue though it was rare. Thrips were rather a minor pest though it was abundant in Quang Nam. No pest aphids were confirmed. Taken together, management of leafminer and lepidopteran pests is crucial to stable production of marketable green bunching onions. Current problems associated with insect pest control in Vietnam are discussed, and the importance of IPM practices is emphasized. A series of color photographs of pests and the damage they can cause are presented to facilitate identification of the pest.

AB - Green bunching onion (or Welsh onion) Allium fistulosum is traditionally an important vegetable in Vietnam. The present study was undertaken to survey the current status of insect pests on green bunching onion in the country. Survey was conducted in conventional fields in central and southern Vietnam. The most widespread pest was Stone leek leafminer Liriomyza chinensis, which occurred all lowland sites investigated except Da Lat, a highland site in central Vietnam. Although insecticides were intensively applied, the percentage of the occurrence in green onion fields was 100% in Bien Hoa, Hue, Huong An, and Quang Nam. In Dalat, L. huidobrensis instead was widely found in Allium fistulosum and A. cepa. Serious infestation by lepidopterans often occurred, and the main species was beet armyworm Spodoptera exigua, which was widely found in lowland areas. Infestation by S. exigua was heavier in summer than in spring. Damage by S. litura was observed in all localities. Helicoverpa armigra infested green bunching onion in Hue though it was rare. Thrips were rather a minor pest though it was abundant in Quang Nam. No pest aphids were confirmed. Taken together, management of leafminer and lepidopteran pests is crucial to stable production of marketable green bunching onions. Current problems associated with insect pest control in Vietnam are discussed, and the importance of IPM practices is emphasized. A series of color photographs of pests and the damage they can cause are presented to facilitate identification of the pest.

UR - http://www.scopus.com/inward/record.url?scp=33845638826&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33845638826&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:33845638826

VL - 51

SP - 275

EP - 283

JO - Journal of the Faculty of Agriculture, Kyushu University

JF - Journal of the Faculty of Agriculture, Kyushu University

SN - 0023-6152

IS - 2

ER -