عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Vegetable leafminer, Liriomyza sativae is one of the most important pests in greenhouses of Iran. A study was conducted on efficiency of an exogenous strain of Diglyphus isaea (Miglyphus®) for controling L. sativa on greenhouse cucumber in Varamin. Two separate greenhouses were selected and each was divided into 2 main parts. In one part, 8 times release of the parasitoid (with the ratio of 0.25 wasps per square meter) was conducted weekly and the second plot was considered as the control (no pest control measures applied). The total number of mines (mean±SE) bearing live and dead larvae and parasitism percentage of leaf miner larvae/plant were 26.61±5.54, 35.32±7.42 and 39.00±7.00, respectively in release treatment of the first greenhouse. The same parameters estimated to be 95.37±12.95, 4.60±0.92 and 5.00±2.00, respectively for the control at the same greenhouse. Similarly, in the second greenhouse above mentioned parameters for release treatment (3.16±0.66, 4.69±0.92 and 40.00±7.00 respectively), was significantly different with those of the control (12.83±1.63, 1.89±0.60 and 8.00±2.00). The activity of parasitoid was increased following the increase of ambient temperature and pest population at the end of the sampling period.