Potential develop generation of the tomato leaf miner- Tuta absoluta (Meyrick) in Shida Kartly and Samtskhe-Javaxeti region of Georgia

The tomato leaf miner- Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae)  is a highly destructive insect pest to tomato plants and fruit. Other  plants in the Solanacaeae family (potato, eggplant, tobacco, goji berry, etc.),  and  various wild solanaceous plants are also suitable hosts.  T.  absoluta was  first  found  in  2011 In  Georgia,  quickly has spread  in all regions of the country,  of its high reproductive capacity and   become a key pest T.absolutais  spread and damaged  plants   in both greenhouses  and  open  fields.  In recent years the rapid growth of T. absoluta population has caused the significant damage of tomato in Georgia.  Generally, in low zone  and in greenhouse   during vegetation season T. absoluta can develop 10-12 generations. The aim of this work was to established ,    phenology of  T. absoluta and its develop in two geographical and climatically  different region  Shida Karthli (550-600 msl) and Samtskhe-Javakheti  (1000-1100 msl) Region of the Western Georgia, 2020-2024, that the biological particulary of this  insect can be also different. The degree-day model based on minimum and maximum temperatures reliably described the population dynamics  estimated the   T.absoluta  completed  8-10   generations in the greenhouse tomato crop during the winter-spring  growing season, where as in open-field crops the pest completed 6-7  generations on open field   in spring-summer tomato in  Shida Karthli. Different geographically and  climatically  condition   in Samtskhe-Javakheti region insect develop  in 4-5  generation in greenhouses condition on the tomato   and 2-3 generation in open area of tomato and potato field per year.