Characterization and insecticidal activity of two natural formulation types against the scale insect (Parlatoria ziziphi) and their biochemical effects on Citrus aurantium
Abstract Background The scale insect, Parlatoria ziziphi (Lucas) (Diaspididae: Hemiptera), is one of the most serious insects in citrus orchards in Egypt. The efficiency of two different formulation types (emulsifiable concentrates (EC) and nanoemulsions) based on the essential oils Artemisia herba-...
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SpringerOpen
2022-09-01
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Series: | Bulletin of the National Research Centre |
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Online Access: | https://doi.org/10.1186/s42269-022-00932-8 |
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author | Nahed Fawzy Abdel-Aziz Hamdy Abdel-Naby Salem Ahmed Mohamed El-Bakry Elham Ahmed Sammour |
author_facet | Nahed Fawzy Abdel-Aziz Hamdy Abdel-Naby Salem Ahmed Mohamed El-Bakry Elham Ahmed Sammour |
author_sort | Nahed Fawzy Abdel-Aziz |
collection | DOAJ |
description | Abstract Background The scale insect, Parlatoria ziziphi (Lucas) (Diaspididae: Hemiptera), is one of the most serious insects in citrus orchards in Egypt. The efficiency of two different formulation types (emulsifiable concentrates (EC) and nanoemulsions) based on the essential oils Artemisia herba-alba (Asso.) (Asterales: Asteraceae) and Laurus nobilis (L.) (Laurales: Lauraceae) at two concentrations of 3 and 5%, compared with the commercial mineral oil, Active Cable, was examined against P. ziziphi. The green formulations were named Artemisia and Laury relative to A. herba-alba and L. nobilis, respectively. The physicochemical properties of the tested formulations have been studied. Results All the EC formulations of the essential oils (EOs) as well as the nanoemulsions with ratios of EOs to Tween 1:1.5 (Artemisia) and 1:2 (Laury) passed all the tested characteristics. The droplet sizes of the successful nanoemulsions’ formulations by the ultrasonic emulsification were 153.7, 113.4 nm for Artemisia and 139.3, 89.4 nm for Laury at 3 and 5% concentrations, respectively. Laury EC caused average reductions of 92.79 and 94.94% (nymphs and females) when applied at 3 and 5%, respectively, while the same oil prepared as nanoemulsions caused average reductions of 50.02 and 55.32% at the same concentrations, compared with 91.74% reduction resulted from spraying Active Cable. Moreover, Artemisia caused reduction percentages of 74.97, 91.52 for EC and 43.7, 54.01 for nanoemulsions, sprayed at 3 and 5%, respectively. Although EC emulsions were more effective in reducing insect populations than nanoemulsion formulations, the efficiency of nanoemulsions gradually increased with time elapsed. The antioxidant activities of superoxide dismutase, catalase, and polyphenol oxidase enzymes were researched. It is recognized that insect infestations increase plant enzyme activity to defend them against insect attack. The results revealed a significant reduction of all the examined enzymes which were more obvious for EC emulsions than nanoemulsions. Conclusions The EC formulations originated from the EOs, especially Laury 3% EC and Artemisia 5% EC, could be an alternative to the traditional insecticides for controlling the scale insect, P. ziziphi. |
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spelling | doaj.art-a1a3764511804c6aa5647dfc97ad78d12022-12-22T03:12:55ZengSpringerOpenBulletin of the National Research Centre2522-83072022-09-0146111310.1186/s42269-022-00932-8Characterization and insecticidal activity of two natural formulation types against the scale insect (Parlatoria ziziphi) and their biochemical effects on Citrus aurantiumNahed Fawzy Abdel-Aziz0Hamdy Abdel-Naby Salem1Ahmed Mohamed El-Bakry2Elham Ahmed Sammour3Department of Pests and Plant Protection, Agricultural and Biological Research Institute, National Research CentreDepartment of Pests and Plant Protection, Agricultural and Biological Research Institute, National Research CentreDepartment of Pests and Plant Protection, Agricultural and Biological Research Institute, National Research CentreDepartment of Pests and Plant Protection, Agricultural and Biological Research Institute, National Research CentreAbstract Background The scale insect, Parlatoria ziziphi (Lucas) (Diaspididae: Hemiptera), is one of the most serious insects in citrus orchards in Egypt. The efficiency of two different formulation types (emulsifiable concentrates (EC) and nanoemulsions) based on the essential oils Artemisia herba-alba (Asso.) (Asterales: Asteraceae) and Laurus nobilis (L.) (Laurales: Lauraceae) at two concentrations of 3 and 5%, compared with the commercial mineral oil, Active Cable, was examined against P. ziziphi. The green formulations were named Artemisia and Laury relative to A. herba-alba and L. nobilis, respectively. The physicochemical properties of the tested formulations have been studied. Results All the EC formulations of the essential oils (EOs) as well as the nanoemulsions with ratios of EOs to Tween 1:1.5 (Artemisia) and 1:2 (Laury) passed all the tested characteristics. The droplet sizes of the successful nanoemulsions’ formulations by the ultrasonic emulsification were 153.7, 113.4 nm for Artemisia and 139.3, 89.4 nm for Laury at 3 and 5% concentrations, respectively. Laury EC caused average reductions of 92.79 and 94.94% (nymphs and females) when applied at 3 and 5%, respectively, while the same oil prepared as nanoemulsions caused average reductions of 50.02 and 55.32% at the same concentrations, compared with 91.74% reduction resulted from spraying Active Cable. Moreover, Artemisia caused reduction percentages of 74.97, 91.52 for EC and 43.7, 54.01 for nanoemulsions, sprayed at 3 and 5%, respectively. Although EC emulsions were more effective in reducing insect populations than nanoemulsion formulations, the efficiency of nanoemulsions gradually increased with time elapsed. The antioxidant activities of superoxide dismutase, catalase, and polyphenol oxidase enzymes were researched. It is recognized that insect infestations increase plant enzyme activity to defend them against insect attack. The results revealed a significant reduction of all the examined enzymes which were more obvious for EC emulsions than nanoemulsions. Conclusions The EC formulations originated from the EOs, especially Laury 3% EC and Artemisia 5% EC, could be an alternative to the traditional insecticides for controlling the scale insect, P. ziziphi.https://doi.org/10.1186/s42269-022-00932-8Insecticidal efficiencyEC emulsionNanoemulsionGreen formulationsParlatoria ziziphi |
spellingShingle | Nahed Fawzy Abdel-Aziz Hamdy Abdel-Naby Salem Ahmed Mohamed El-Bakry Elham Ahmed Sammour Characterization and insecticidal activity of two natural formulation types against the scale insect (Parlatoria ziziphi) and their biochemical effects on Citrus aurantium Bulletin of the National Research Centre Insecticidal efficiency EC emulsion Nanoemulsion Green formulations Parlatoria ziziphi |
title | Characterization and insecticidal activity of two natural formulation types against the scale insect (Parlatoria ziziphi) and their biochemical effects on Citrus aurantium |
title_full | Characterization and insecticidal activity of two natural formulation types against the scale insect (Parlatoria ziziphi) and their biochemical effects on Citrus aurantium |
title_fullStr | Characterization and insecticidal activity of two natural formulation types against the scale insect (Parlatoria ziziphi) and their biochemical effects on Citrus aurantium |
title_full_unstemmed | Characterization and insecticidal activity of two natural formulation types against the scale insect (Parlatoria ziziphi) and their biochemical effects on Citrus aurantium |
title_short | Characterization and insecticidal activity of two natural formulation types against the scale insect (Parlatoria ziziphi) and their biochemical effects on Citrus aurantium |
title_sort | characterization and insecticidal activity of two natural formulation types against the scale insect parlatoria ziziphi and their biochemical effects on citrus aurantium |
topic | Insecticidal efficiency EC emulsion Nanoemulsion Green formulations Parlatoria ziziphi |
url | https://doi.org/10.1186/s42269-022-00932-8 |
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