Vol. 8, Special Issue 11, Part K (2024)

The present experiment was carried out at Fruit Research Station, Sakkar baug, College of Horticulture, Junagadh Agricultural University, Junagadh during the year 2022-23. Incidence of the guava fruit fly was recorded standard meteorological week wise throughout the course of the investigation. The fruit fly population was recorded from the 23rd standard meteorological week to the 52nd standard meteorological week. The peak incidence of fruit fly was recorded at 35th SMW which was 865.13 fruit flies per trap. In contrast, the lowest population of fruit fly (10.00 fruit flies/trap) was recorded at 52nd SMW. Furthermore, the maximum activity of fruit fly was remained throughout August month with 800.31 fruit flies per trap and the minimum activity of fruit fly was observed during the December month with 21.12 fruit flies per trap. The effects of various weather parameters on the fluctuation of the fruit fly population on guava indicated that the population of fruit fly had a highly significant positive correlation with evening humidity (r = 0.670), morning humidity (r = 0.669) and minimum temperature (r = 0.522). While, wind speed (r = 0.216) and rainfall (r = 0.293) were also found positively correlated but it was non-significant to the fruit fly population. Temperature fluctuation (r = -0.696), relative humidity fluctuation (r = -0.616), bright sunshine hours (r = -0.486) and evaporation (r = -0.483) had a highly significant negative correlation with fruit fly population. Furthermore, maximum temperature (r = -0.362) had a significant negative correlation with the fruit fly population.