Name: NAHED FAWZY ABDEL AZIZ ABDEL MONIEM
Associate Prof., Department of Plant Protection (NRC)
Date of Birthday: 03/02/1970 Place of birth: Cairo, Egypt
Work address: National Research Centre
Dokki, El Tahreer Street
Department of Pests and Plant Protection,
Cairo, Egypt
Mobile: 002-01004146321
E-mai:nahedmohamed5@
Education: Ph.D.
Degree: proffesor
19
Scopus Publications
Scopus Publications
Synergistic insecticidal effects of zinc-loaded zeolite nanoparticles combined with essential oils against Callosobruchus maculatus Ahmed Mohamed El-Bakry, Hanan Farouk Youssef, Nasr Mohamed Abdelmaksoud, Nahed Fawzy Abdel-Aziz, Elham Ahmed Sammour Scientific Reports, 2025 Callosobruchus maculatus (F.) is a serious pest that causes post-harvest losses, which is a threat to global food security, therefore there is need to develop sustainable pest management strategies. This study investigates the synergistic insecticidal effects of zinc-loaded zeolite nanoparticles in combination with essential oils from Rosmarinus officinalis (L.) and Pimpinella anisum (L.) against C. maculatus adults and their progeny. Zeolite-A and zeolite-X were synthesized and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS), and found to be highly crystalline and successfully zinc functionalized. The chemical profiles of the essential oils were elucidated by gas chromatography-mass spectrometry (GC-MS). The results showed that zeolites alone had moderate insecticidal activity against the tested insect. Zeolites loaded with zinc enhanced insecticidal activity on C. maculatus. Combining zeolites with essential oils further increases insecticidal activity, with LC50 values ranging from 161 to 306 mg/kg. Zeolite nanoparticles and P. anisum essential oil formulation was the most effective in killing C. maculatus adults and progeny. Co-toxicity factor analysis indicated that there were synergistic effects between the essential oils and zeolites, especially between P. anisum and Zn-zeolite-A. Morphological examination of treated C. maculatus adults via SEM revealed cuticle abrasions, desiccation areas, and damage to sensilla, indicating a physical mode of action for the zeolites. This study suggests that zeolite nanoparticles and essential oil combinations can be used as eco-friendly insecticides for the management of C. maculatus in stored cowpea seeds.
Comparative toxicity of essential oils, their emulsifiable concentrates and nanoemulsion formulations against the bean aphid, Aphis fabae Nasr M. Abdelmaksoud, Ahmed M. El-Bakry, Elham A. Sammour, Nahed F. Abdel-Aziz Archives of Phytopathology and Plant Protection, 2023 The present study aims to prepare emulsifiable concentrate (EC) and nanoemulsion formulations from the plant essential oils of Lavandula angustifolia (Mill.), Ambrosia maritima (L.), Commiphora myrrha (Nees) Engl., Juniperus virginiana (L.), Rheum palmatum (L.) and Tagetes minuta (L.). The efficiency of these essential oils along with their formulations were compared against the bean aphid, Aphis fabae (Scopoli). Results disclosed that all EC preparations passed the emulsion stability and foam formation tests. The particle droplet size of the nanoemulsions varied from 64.3 to 264.7 nm. The toxicity of EC formulations was slightly higher than the corresponding nanoemulsion formulations. Both EC and nanoemulsion of R. palmatum were the most efficient (LC50 = 1003.60 and 1105.34 mg L−1, respectively). EC preparations had no adverse effects on seed beans. The absence of organic solvents and the high aphicidal activity of EC formulations might make these preparations suitable for controlling A. fabae.
Eco-friendly secondary metabolites from conyza dioscoridis against spodoptera littoralis Azza Matloub, Amal Maamoun, Nahed Abdel-Aziz, Elham Samour, Hanaa El-Rafie Egyptian Journal of Chemistry, 2021 Spodoptera littoralis (Boisd.), is one of the most dangerous pests in Egypt, targeting many economically crucial crops. In addition, population growth is major challenge to agricultural production. The aim of the current study is evaluation of insecticidal properties of chloroform/ methanol extract prepared from Conyza dioscoridis aerial part as well as study the biochemical changes on the 4thlarval instars of the cotton leaf worm, S. littoralis under laboratory conditions. Moreover, the bioactive secondary metabolites were isolated from the tested extract by chromatographic techniques and identified using spectroscopic analysis. Also, the volatile constituents distilled from Conyza dioscoridis aerial parts were characterized by GC/MS analysis. Column chromatography of bioactive chloroform/ methanol extract led to the identification of five major compounds including three triterpenes; β-amyrin-3-acetate, β-lupeol-3-acetate, β-amyrenone along with dotriacontane hydrocarbon as well as one methoxyflavone; 5,4ʹ-dihydroxy-6,7-dimethoxyflavone. Insight on insecticidal efficacy, the percentage of cumulative mortalities during pupal and adult stages reached to 76.6% and 83.3%, respectively after feeding 4thlarval instars of S. littoralis on tested extract with insecticidal activity in a dose-dependent manner. Whereas, β-amyrenone, lupeol acetate and 5,4ʹ-dihydroxy-6,7-dimethoxyflavone suppressed 50, 60 and 73.3% of 4th instar larvae of S. littoralis at concentration 0.3, 0.5 and 0.5%, respectively. Also, the extract showed marked decreasing in acetyl cholinesterase activity, total lipids and protein contents. The GC/MS analysis of volatile oil of C. dioscoridis aerial part led to the identification of 63 sensory metabolites that represent 93.68% of total volatile constituents. The oil was characterized by a high percentage of oxygenated sesquiterpenes (36.00%) and sesquiterpene hydrocarbons (21.09%), in addition phenylated and aliphatic hydrocarbons (15.43% and 14.58%, respectively). α-Cadinol was the major component (8.47%) accompanied by a high percentage of sesquiterpene alcohols. C. dioscoridis aerial part is a promising botanical pesticide with different mechanisms of action targeting 4th instars of larvae of S. littoralis. It had adverse effects survival, fecundity, oviposition, pupae and adults development and also acts as metabolic and acetylcholine esterase inhibitors against S. littoralis. So, the present findings may encourage more applied researches to evaluate crude extract and/or tested compounds in semi-field and field trial for controlling S. littoralis.
Insecticidal potential of Ag-loaded 4A-zeolite and its formulations with Rosmarinus officinalis essential oil against rice weevil (Sitophilus oryzae) and lesser grain borer (Rhyzopertha Dominica) A. El-Bakry, H. Youssef, N. Abdel-Aziz, E. A. Sammour Journal of Plant Protection Research, 2019 The insecticidal efficiency of Ag-loaded 4A-zeolite (ZAg) and its formulations with Rosmarinus officinalis essential oil (RO) was evaluated against Sitophilus oryzae (L.) and Rhyzopertha dominica (F.). For comparison, different rates of ZAg (0.25, 0.5, 0.75, and 1 g ⋅ kg –1 wheat) were used solely and in a combination with LC50 concentrations of RO. Mortality was assessed after 7, 14, and 21 days of insect exposure to treated wheat. The progeny production was also evaluated. The use of ZAg accomplished a complete mortality (100%) on S. oryzae and 96.67% on R. dominica as well as 100% mortality of progeny against the two insect species after the longest exposing duration (21 days), at the highest rate (1 g ⋅ kg–1). On the other hand, the complete mortalities of ZAg formulations on S. oryzae were obtained after 14 d of treatment with F1 formulation (0.605 g ⋅ kg–1 RO + 0.25 g ⋅ kg–1 ZAg) and after 7 days with the other tested formulations. In addition, the complete mortality on R. dominica was obtained only by F8 (0.059 g ⋅ kg–1 RO + 1 g ⋅ kg–1 ZAg) formulation after 14 days of treatment. Concerning the efficiency of the examined formulations on the progeny of S. oryzae, F1 (0.605 g ⋅ kg–1 RO + 0.25 g ⋅ kg–1 ZAg) and F2 (0.605 g ⋅ kg –1 RO + 0.5 g ⋅ kg–1 ZAg) formulations recorded 100% mortality. In addition, F3 (0.605 g ⋅ kg–1 RO + 0.75 g ⋅ kg–1 ZAg) and F4 (0.605 g ⋅ kg–1 RO + 1 g ⋅ kg–1 ZAg) formulations suppressed the progeny production. Furthermore, the complete mortality of R. dominica progeny was obtained with F7 (0.059 g ⋅ kg–1 RO + 0.75 g ⋅ kg–1 ZAg) and F8 (0.059 g ⋅ kg –1 RO + 1 g ⋅ kg–1 ZAg) formulations. ZAg, especially its formulations with R. officinalis oil, had potential effects against two stored-product insects. F1 and F8 formulations could be treated efficiently on S. oryzae and R. dominica, respectively.
Impact of Lavandula officinalis, inert dusts and their formulations on Sitophilus oryzae Agricultural Engineering International Cigr Journal, 2017
Insecticidal activity of natural plant essential oils against some stored product insects and their side effects on wheat seed germination Egyptian Journal of Biological Pest Control, 2016
Semi-field evaluation of some natural clean insecticides from essential oils on armored and soft scale insects (Homoptera: Diaspididae and coccidae) infesting mango plants International Journal of Chemtech Research, 2016
Use of tank-mix adjuvants to improve effectiveness and persistence of chlorpyrifos and cyhalothrin formulations Journal of Agricultural Science and Technology, 2015
Resistance and enzyme assesment of the pink bollworm, Pectinophora gossypiella (Saunders) to spinosad Journal of Animal and Plant Sciences, 2013
Monitoring of pesticide residues and heavy metals in irrigation water sources and their toxic effect on albino rats Journal of Entomological Research, 2012
