Synthesis, Phytochemical Screening and Toxicity Measuring Against Earias insulana (Boisd.) (Lepidoptera: Noctuidae) of Silver Nano Particles from Origanum marjorana Extract in the Field

Abstract

Herein, we declare on the biosynthesis of synthesised silver nanoparticles utilizing the aqueous extract of Origanum Marjorana by reducing 1 mM silver nitrate at room temperature. AgNPs were characterized by using some common techniques such as an ultra violet spectrophotometer, Fourier transforms infrared spectroscopy, X-ray diffraction, and transmission electron microscopy. Morphologically, AgNPs demonstrated a spherical shape with an average particle size distribution of 63-85 nm. FT-IR studies showed the presence of bioactive useful bunches such as phenolic compounds, amines, and aromatic rings are found to be the capping, stabilizing specialists and required for the reduction of silver ions of AgNPs. The measurement of toxicity of AgNPs and the plant extract of O. marjorana against Earias insulana was also discussed. After the treatment of synthesized nanoparticles for two successive seasons, general reduction percentages on the infestation of the green boll caused by E. insulana larvae in the second season was more by 60.4% than the first season which was 44.73%. Synthesized AgNPs treatment was considered more effective than plant extract for controlling E. insulana. General reduction percentages in the infestation of the green boll caused by E. insulana larvae in the first season associated with the treatments with AgNPs and plant extract were 44.73 and 37.53% while the second season record 60.4 and 51.82%; respectively.

Omani Frankincense nanoemulsion formulation efficacy and its latent effects on biological aspects of the spiny bollworm Earias insulana (Boisd.)

“…Our findings are consistent with those of many other studies that have found that nanoformulations exhibit important insecticidal effects on other pests. According to Al Shater et al (2020) , silver nanoparticles (AgNPs) have shown significant toxic effects against the cotton spiny bollworm E. insulana , and as a consequence, AgNPs treatment is thought to be superior to plant extract alone for controlling E. insulana . Another study using the essential oil of Eucalyptus globulus was carried out by Moustafa et al (2015) .…”

“…The spiny bollworm is a mid-late season insect that mostly attacks cotton plants ( El Hamaky et al, 1990 ). E. insulana is active almost all year on its various host plants and is effective almost all year on its diverse host plants ( Arif and Attique, 1990 ; Al Shater et al, 2020 ). Both cotton quality and quantity are reduced as a result of these bollworm infestations.…”

Nanomaterials as Nanofertilizers and Nanopesticides: An Overview

“…[103,113] Besides, AgNPs have shown great larvicidal activity against plant pests. [114] In this regard, Ibrahim et al [115] exhibited the pivotal role of AgNPs in the mitigation of detrimental effects caused by wheat Fusarium head blight. AgNPs biosynthesized using Pseudomonas poae strain CO showed powerful antifungal activity against F. graminearum that manifested by a reduction in mycelium growth of F. graminearum and damaged cell wall of exposed to AgNPs (Figure 10).…”

Comparative Studies on The Effect of Some Citrus Oils and Their Silver Nitrate Nanoparticles Formulation on Camels Tick, Hyalomma dromedarii (Acari: Ixodidae)

“…The so-called, "green pesticides" are currently proposed as one of the helpful tools for controlling ectoparasites (Benelli, et al, 2015). Silver nanoparticles (AgNPs) have been recognized for their useful biomedical properties, e.g., antibacterial (Sharma, et al, 2009 andDutta1, et al, 2020), antiviral (Trefry and Wooley, 2012), insecticidal (Habeeb et al, 2009 andShater et al, 2020), and larvicidal activities (Govindarajan, et al, 2016). As well as, their agricultural and pharmaceutical applications because they are non-toxic to humans and possess a wide array of biological activities (Skiba andVorobyova, 2019 andAl Shater et al ,2020).…”