The occurrence of Helicoverpa armigera bell pepper farming in the Iranduba city causes economic losses and raises production costs. As it is an introduced pest, control protocols are still not well defined and disorderly insecticides’ application causes a variety of deleterious effects. This study aimed to obtain data about Helicoverpa armigera adults’ population levels using pheromone traps and data about losses caused in production, during monthly samplings from January to November 2018 and then determine the economic losses levels to the properties analyzed. In addition, analyze which environmental variables (average temperature, average precipitation and property characteristics) influence the most on the population levels and consequently on the percentage of damaged fruits. During this study, 4.400 plants and 156.604 fruits were sampled. The higher quantity of damaged fruits occurred in October 2018. A total of 166 adults specimens were sampled and the population peak also occurred in October. The correlation between adults and the percentage of damaged fruits was not statistically significant. Multiple regression results showed that only average temperature and property characteristics significantly influenced in the percentage of damaged fruits. The higher values of damaged fruits coincided with average temperature peaks. Property characteristics positively affected properties one and five and negatively property four on the values of fruits’ percentage. Adults’ population levels significantly influenced only on property characteristics, which property one had higher population levels. Economic losses regarding properties ranged from R$ 25,20 to R$ 1.281,60. The lower economic loss was 4,98% and the higher 12,05%. Analyzing the results, it is evident that even though the application of insecticides occurred every three days in average, real property losses were higher compared to the economic losses, which might be explained by the excessive application of non registered pest’s products and without any parameter, which might have caused the decrease of natural enemies, besides the increase on production costs.
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