@article{Dimetry_A.H_A.E_M. A._Dalia A._2019, title={Comparative Toxicity of Neem and Peppermint Oils Nano Formulations against Agrotis ipsilon (Hufn.) Larvae (Lepidoptera: Noctuidae)}, volume={1}, url={https://journals.bilpubgroup.com/index.php/jbr/article/view/590}, DOI={10.30564/jrb.v1i1.590}, abstractNote={<p>Applications of nanotechnology in agriculture will result in the development of efficient and potential approaches towards the management of insect pests. The toxicity effects of four essential oils peppermint, thyme, camphor and sage oils were tested against the fourth instar larvae of <em>Agrotis ipsilon</em> to select the most effective essential oil to be converted to the nano form. According to the results obtained, peppermint oil was the most toxic compound, which has been used in the present investigation  compared  with neem oil. The toxicity of  bulk and nano- formulations of neem  and pepper mint oils were tested  against  2<sup>nd</sup> and 4<sup>th</sup> instar  larvae of <em>A. ipsilon </em>under laboratory conditions of 25±2 °C& 65 -70 % R.H.relative humidity The results show that the LC<sub>50 </sub>value (the concentration used which kill 50% of the tested individuals)of loaded neem or pepper mint were lower (0.62 and 36.47 ppm) compared with neem or pepper mint oil nano-emulsion and bulk neem for the second larval instar. The different formulations of neem are more potent than in case of peppermint oil, as LC<sub>50</sub> and LC<sub>90</sub> values were significantly lower.The same trend was found concerning the 4th larval instar. Age of treated larvae had a detrimental effect on the response to the compounds tested. It was noticed that the younger larvae were much more sensitive to the prepared compounds compared to the older ones. The least LC<sub>50 </sub>value for loaded neem nano-emulsion was 6.68 ppm compared with the highest value for  bulk neem oil (16.68 ppm ). Also,  LC<sub>90 </sub> values followed the same trend as in  case ofLC<sub>50</sub>.  Again, the toxicity of loaded peppermint oil had the most insecticidal activity as expressed by the lowest LC<sub>50 </sub>value (51.9 ppm) with more insecticidal effect than the bulk(125.43 ppm)  or nano-emulsion (85.43 ppm).  The present results indicated that these novel systems could be used in integrated pest management program for <em>A. ipsilon </em>control.</p>}, number={1}, journal={Journal of Botanical Research}, author={Dimetry, Nadia Z. and A.H, Amin and A.E, Bayoumi and M. A., Abdel-Raheem and Dalia A., Youssef}, year={2019}, month={Apr.}, pages={13–19} }