Effect of chlorpyrifos + BPMC insecticide spray on the population density, damage and natural enemies of leafminer [Liriomyza trifolii (Burgess)] on onion (Allium cepa Linn.) grown after rice (Oryza sativa Linn.)
Issue Date
4-2009
Abstract
A 2-year study was conducted on the population density of adults, larvae, extent of damage, and larval parasitoids of the onion leafminer (LM) Liriomyza trifolii (Burgess) in weekly-sprayed and unsprayed onion fields in Bongabon, Nueva Ecija, Philippines. The area is known for large-scale cultivation of onion during the dry months from December to May. Changes in population density of LM larvae, number of oviposition punctures, mines, damaged leaves, natural enemies and adult flies caught in yellow board. There were little differences observed in the parameters studied between sprayed and unsprayed plots except for a significant reduction in larval parasitism and number of generalist predators recorded on the weekly-sprayed plot. Spraying onion field with the farmers' most commonly used insecticide (Chlorpyrifos+BMPC) was not effective against LM but detrimental to its naturally-occuring parasitoids and predators.
Source or Periodical Title
Philippine Entomologist
ISSN
0048-3753
Volume
23
Issue
1
Page
56-66
Document Type
Article
Frequency
semi-annually
Physical Description
graphs ; tables
Language
English
Recommended Citation
Arida, G . S.; Punzal, B. S.; and Rajotte, E. G., "Effect of chlorpyrifos + BPMC insecticide spray on the population density, damage and natural enemies of leafminer [Liriomyza trifolii (Burgess)] on onion (Allium cepa Linn.) grown after rice (Oryza sativa Linn.)" (2009). Journal Article. 5374.
https://www.ukdr.uplb.edu.ph/journal-articles/5374
En – AGROVOC descriptors
LIRIOMYZA TRIFOLII; AGROMYZIDAE; ORYZA SATIVA; CHLORPYRIFOS; INSECTICIDES; POPULATION DYNAMICS; NATURAL ENEMIES