كفاءة العزلة المحلية من النيماتودا الممرضة للحشرات (Heterorhabditis bacteriophora GA ضد يرقات حافرة أوراق البندورة (Lepidoptera: Tuta absoluta (Meyrick)‎ Gelechiidae)‎

الملخص EN

The Efficacy of a local isolate of entomopathogenic nematodes GA (Heterorhabditis bacteriophora GA) were estimated at a concentration of 200 infective instars/1ml were tested in Petri dishes against the first, second, third and fourth larval for controlling the tomato leaf miner Tuta absoluta during the 2018 season.

Laboratory research was conducted at the Center for Biological Control Studies and Research centre Faculty of Agriculture Damascus University.

The statistical analysis of laboratory experiments showed significant differences between the treatment of the 1st and 2nd larvae T.

absoluta by local isolate G.A after 7 days and other treatment after 1-3 days in Petri dishs, the mortalities were 80% after 7 days.

Significant differences were found between the mortality rates of tomato leaf miner larvae T.

absoluta at the 3rd and 4th larvae treated with local isolate G.A on the seventh day and the treatment on the first day, which was (90-57.5%), respectively.