Please ensure Javascript is enabled for purposes of website accessibility
Skip to main content Skip to main navigation menu Skip to site footer
10.25100/socolen.v15i2.10183
Submitted: 26-06-2020
Published: 15-07-1989

STUDIES OF THE ECONOMIC LEVEL OF DAMAGE OF THE POTATO MOTH, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae)

Universidad Nacional de Colombia, Sede Medellín
Universidad Nacional de Colombia, Sede Medellín
Universidad Nacional de Colombia, Sede Medellín

How to Cite

1.
JARAMILLO-N. JE, ALVAREZ-A. AM, SALDARRIAGA-V. A. STUDIES OF THE ECONOMIC LEVEL OF DAMAGE OF THE POTATO MOTH, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae). Rev. Colomb. Entomol. [Internet]. 1989 Jul. 15 [cited 2026 Oct. 25];15(2):28-35. Available from: https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/10183
Metrics

308 | 411




 

Download:

Abstract

A study was carried out at "La Selva" Experiment Station, located at Rione­gro (Antioquia, Colombia), during the second semester of 1986 and the first of 1987. The objective was to determi­ne the parameters related to the economic level of damage caused by Phthorimaea operculella (Zeller). The leaf area damaged by the insect at the field was 6.29 ± 132 cm2 simulat­ed percentages of 0, 25, 50 and 75% of defoliation at once and when the plant was 35, 55 and 75 days old, indicated that the levels above 25% affected the yield and the tuber quality. A regression analysis to measure the relationship between foliar damage and yield for each one of the crop ages studied and one to three insecti­cide applications showed the following results: For the 35 days old crop with one and three insecticide applications, the damage levels were 3.19 and 9.6 worms by the plant. For the 55 days old crop with one and three insecticide applications, the damage levels were 2.44 and 7.35 worms by the plant. An for the 75 days old crop the damage levels were 4.48 and 6.65 worms by plants, respectively.

308 411
Download data is not yet available.

How to Cite

1.
JARAMILLO-N. JE, ALVAREZ-A. AM, SALDARRIAGA-V. A. STUDIES OF THE ECONOMIC LEVEL OF DAMAGE OF THE POTATO MOTH, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae). Rev. Colomb. Entomol. [Internet]. 1989 Jul. 15 [cited 2026 Oct. 25];15(2):28-35. Available from: https://revistacolombianaentomologia.univalle.edu.co/index.php/SOCOLEN/article/view/10183
Citations
Crossref
Scopus
Google Scholar
Europe PMC

Authors retain the copyright on their work and are responsible for the ideas expressed in them. Once a manuscript is approved for publication, authors are asked for a publication license for the term of legal protection, for all territories that allows the use, dissemination and disclosure of the same.