Bachrouch Olfa - Academia.edu (original) (raw)
Uploads
Papers by Bachrouch Olfa
In this work, we have investigated chemical composition and insecticidal effectiveness of Mentha ... more In this work, we have investigated chemical composition and insecticidal effectiveness of Mentha pulegium and Thymus capitatus areal parts essential oil from Tunisia against the major stored grain pest: Tribolium castaneum. There are qualitative and quantitative differences in the chemical compositions of the two studied oils. GC/MS analysis showed that Pulegone (39.1541), Menthone (35.6612%), Piperitenone (3.9858%); piperitone (3.5599%) and Isopulegone were the major compounds of Mentha pulegium essential oil. Whereas, Thymus capitatus essential oil was characterized by Thymol (76.50%), Carvacrol (3.18 %), p-cymene (3.1788%) and βcaryophyllene (2.786%) as major compounds. Results revealed that both studied oils exhibited fumigant toxicity potential. The fumigant tests showed that Mentha pulegium essential oil was more toxic than Thymus capitatus essential oil toward Tribolium castaneum. The corresponding LC50 and LC95 values were respectively 33.740159.06 μL/L air for Mentha pulegi...
This work aims to evaluate the mass trapping technique based on the use of female foodattractant ... more This work aims to evaluate the mass trapping technique based on the use of female foodattractant lure Tri-pack and the insect growth regulators lufenuron for the control of medfly in citrus field. These methods were used as alternative to chemical control with malathion spraying in Washington navel orange orchards in 2006 and 2007. The assessment of the mass trapping technique efficacy was based on adult Medfly population reduction expressed by weekly recording of male captures together with the assessment of fruit damage at harvest. Trials were conducted using a density of 20 trap/ha. Results indicated significant differences in male captures and fruit damage percentages between the two tested methods and the control (malathion spraying). Concerning adult males Medfly captures, reductions of 62.86% and 47.29% were achieved respectively for the mass trapping based on lufenuron and Tri-pack respectively in 2007. For fruit damage assessment, results showed reduction of 9.68% for the m...
This work aims to evaluate the mass trapping technique based on the use of female foodattractant ... more This work aims to evaluate the mass trapping technique based on the use of female foodattractant lure Tri-pack ® and the insect growth regulators lufenuron for the control of medfly in citrus field. These methods were used as alternative to chemical control with malathion spraying in Washington navel orange orchards in 2006 and 2007. The assessment of the mass trapping technique efficacy was based on adult Medfly population reduction expressed by weekly recording of male captures together with the assessment of fruit damage at harvest. Trials were conducted using a density of 20 trap/ha. Results indicated significant differences in male captures and fruit damage percentages between the two tested methods and the control (malathion spraying). Concerning adult males Medfly captures, reductions of 62.86% and 47.29% were achieved respectively for the mass trapping based on lufenuron and Tri-pack ® respectively in 2007. For fruit damage assessment, results showed reduction of 9.68% for the mass trapping based on lufenuron and 31.99% for the mass trapping based on Tripack ® compared to the control.
In this work, we have investigated chemical composition and insecticidal effectiveness of Mentha ... more In this work, we have investigated chemical composition and insecticidal effectiveness of Mentha pulegium and Thymus capitatus areal parts essential oil from Tunisia against the major stored grain pest: Tribolium castaneum. There are qualitative and quantitative differences in the chemical compositions of the two studied oils. GC/MS analysis showed that Pulegone (39.1541), Menthone (35.6612%), Piperitenone (3.9858%); piperitone (3.5599%) and Isopulegone were the major compounds of Mentha pulegium essential oil. Whereas, Thymus capitatus essential oil was characterized by Thymol (76.50%), Carvacrol (3.18 %), p-cymene (3.1788%) and βcaryophyllene (2.786%) as major compounds. Results revealed that both studied oils exhibited fumigant toxicity potential. The fumigant tests showed that Mentha pulegium essential oil was more toxic than Thymus capitatus essential oil toward Tribolium castaneum. The corresponding LC50 and LC95 values were respectively 33.740159.06 μL/L air for Mentha pulegi...
This work aims to evaluate the mass trapping technique based on the use of female foodattractant ... more This work aims to evaluate the mass trapping technique based on the use of female foodattractant lure Tri-pack and the insect growth regulators lufenuron for the control of medfly in citrus field. These methods were used as alternative to chemical control with malathion spraying in Washington navel orange orchards in 2006 and 2007. The assessment of the mass trapping technique efficacy was based on adult Medfly population reduction expressed by weekly recording of male captures together with the assessment of fruit damage at harvest. Trials were conducted using a density of 20 trap/ha. Results indicated significant differences in male captures and fruit damage percentages between the two tested methods and the control (malathion spraying). Concerning adult males Medfly captures, reductions of 62.86% and 47.29% were achieved respectively for the mass trapping based on lufenuron and Tri-pack respectively in 2007. For fruit damage assessment, results showed reduction of 9.68% for the m...
This work aims to evaluate the mass trapping technique based on the use of female foodattractant ... more This work aims to evaluate the mass trapping technique based on the use of female foodattractant lure Tri-pack ® and the insect growth regulators lufenuron for the control of medfly in citrus field. These methods were used as alternative to chemical control with malathion spraying in Washington navel orange orchards in 2006 and 2007. The assessment of the mass trapping technique efficacy was based on adult Medfly population reduction expressed by weekly recording of male captures together with the assessment of fruit damage at harvest. Trials were conducted using a density of 20 trap/ha. Results indicated significant differences in male captures and fruit damage percentages between the two tested methods and the control (malathion spraying). Concerning adult males Medfly captures, reductions of 62.86% and 47.29% were achieved respectively for the mass trapping based on lufenuron and Tri-pack ® respectively in 2007. For fruit damage assessment, results showed reduction of 9.68% for the mass trapping based on lufenuron and 31.99% for the mass trapping based on Tripack ® compared to the control.