Population Dynamic of Honeydew Moth, Cryptoblabes gnidiella Miller in Vineyards Orchards

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This work was carried out in a private farm of vineyards orchard, at Zagazig district , Sharkia governorate, Egypt, during 2014, 2015 and 2016 seasons . The present study aim to study the effect of temperature , relative humidity and dew point on population dynamic of Cryptoblabes gnidiella picked by used sex pheromone traps under field condition . The results showed that average number of adults were increasing gradually from May,10 to August ,23 thenceforth decreased in period after August,23 to Dec.,6 at three seasons. Also, the results recorded 5th ,6th and 6th peaks during 2014, 2015 and 2016 seasons, respectively. Especially , 2014 season, the first peak recorded 4 adults at May,31, the second peak recorded 15.6 adults at July , 12 , the 3rd peak recorded 17.3 adults at August, 23, the 4th peak appear 13 adults at Sept.,20 and the 5th peak recorded 7.6 adults at Oct.,25 , respectively. The C. ginidiella adults collected from traps during 2015 season , recorded 6th peaks as follow , 10.3, 8.0, 10.33, 7.66, 9.66 and 12.66 during May,31 , Jun.,28, July, 19, August,23, Sept.,13 and Oct., 18 , respectively . On the other hand , the results during 2016, illustrate that there are highly significant correlation relationship between average number with DP, average number with air temperature, average number with (DP & RH) and average number with ( air temp with DP ) , but the relation is not significant between average number with RH alone , average number with ( air Temp. & RH) . The data illustrate that abiotic factors as ( RH, DP and temperature ) cause highly significant on average number of C. gnidielLa , the temperature affect on average number more than DP and RH.