Abstract
The flight activity of adult Helicoverpa assulta (Guenee) in hot pepper fields was investigated and degree-day models for predicting adult occurrence were developed based on the patterns observed. There were two patterns (groups of two to three peaks) in the occurrence of H. assulta during the growing season. The spring adult emergence was similar among years, but the summer adult occurrence differed depending on the weather. The two- and three-peak adult flight periods occurred when the cumulative degree-day for H. assulta in early October was 1500 and 1700 degree-days, respectively. Data were then used to develop degree-day based bimodal and trimodal models for prediction of the seasonal two- and three-peak adult occurrences. The applicability of these models for the management of H. assulta is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 295-300 |
| Number of pages | 6 |
| Journal | International Journal of Pest Management |
| Volume | 54 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2008 |
Bibliographical note
Funding Information:This research was funded by grants from the Agricultural R&D Promotion Center (project no. 500-20013005). This research was also partially supported by the Brain Korea 21 project. We would like to thank Dr C.Y. Yang for providing validation data for 2001 and 2002.
Keywords
- Adult flight
- Bimodal model
- Degree-day model
- Helicoverpa assulta
- Trimodal model
ASJC Scopus subject areas
- Agronomy and Crop Science
- Insect Science