Original scientific paper

https://doi.org/10.17971/ec.21.1.1

Assessment of a possible increase in the harmfulness of the cotton bollworm (Helicoverpa armigera Hubner) in Croatia

Helena Virić Gašparić orcid.org/0000-0002-4275-4033 ; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska
Domagoj Vučemilović Jurić orcid.org/0000-0002-6063-860X ; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska
Renata Bažok orcid.org/0000-0003-1655-8140 ; Sveučilište u Zagrebu, Agronomski fakultet, Zagreb, Hrvatska

Abstract

The cotton bollworm (Helicoverpa armigera Hübner) is a major polyphagous pest of corn, tobacco, cotton, chickpeas, and tomatoes. Damage is caused by caterpillars that feed on the vegetative and generative parts of host plants. The damage in the world is estimated at two billion dollars per year. It is widespread in Asia, Africa, South America, Europe and Australia. It is a migratory species and can travel greater distances. In our area it has 2-3 generations per year, in tropical conditions it can develop up to 11 generations per year. The occurrence of the cotton bollworm is favored by high temperatures during the spring and summer and higher rainfall in spring. As temperatures increase, the time required for the entire life cycle decreases. Considering that the average daily temperature is expected to increase by 3°C by the end of the next century, an increase in the number of generations and the harmfulness of H. armigera can be expected. In the absence of control measures, monitoring the biology and migratory movements of H. armigera is important to assess the risk of invasion into a new area or crop.

Keywords

ecological requirements; Helicoverpa armigera; monitoring; soy; harmfulness

Hrčak ID:

283631

URI

https://hrcak.srce.hr/283631

Publication date:

30.6.2022.

Article data in other languages: croatian

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