The Effect of alcoholic extract (Terpenes) from Eucalyptus camaldulensis (Dehnh.) leaves in combating pupa stage in lesser grain borer Rhayzopertha dominica (Fab.)(Coleoptera:Bostrichidae)


This study was included the effectiveness of the Terpenes extract from Eucalyptus camaldulensis leaves in to the pupa stage for Lesser grain borer Rhyzopertha dominica in two ages 24 and 72 hours under conditions at temperature 30±2 Cº and relative humidity 65±5%, research has included three test concentrations 3, 5 and 7% (g/100 ml), the concentration 7% gave higher rate of killing 25% of the age 24h. compared with other concentrations, whereas the age 72h. have equal rates of kill by 30% to both concentrations 5 and 7% with increase in the proportion of total partial emergence and distortions 45% and decreases to 40% to pupae at 24 hours.