گیاه پزشکی

گیاه پزشکی

ارزیابی اثر فرمولاسیون نانو‌امولسیون اسانس گیاه Myrtus communis علیه سپردار سفید خرما (Parlatoria blanchardi)

نوع مقاله : علمی پژوهشی -انگلیسی

نویسندگان
مرکز تحقیقات خرما، دانشگاه بصره، بصره، عراق
چکیده
سپردار سفید خرما (Parlatoria blanchardi)، آفت کلیدی در باغات خرما، با تغذیه از شیره گیاهی موجب خسارت قابل توجهی به درختان می‌گردد. فرمولاسیون ترکیبات فعال با منشأ گیاهی در قالب نانوامولسیون، رویکردی مؤثر در مدیریت این آفت محسوب می‌شود. در این پژوهش، با به‌کارگیری یک روش کم‌انرژی، نانوامولسیون آب در روغن (W/O) از اسانس گیاه Myrtus communis تهیه شد. هدف اصلی، ارزیابی کارایی این آفت‌کش نانوامولسیونی علیه Parlatoria blanchardi (Targioni Tozzetti, 1892) و بررسی خواص پخش‌شوندگی فرمولاسیون‌های نانوی اسانس بود. در این راستا، سه نمودار فازی با استفاده از متیل‌استر و روغن پارافین‌ به‌عنوان فازهای روغنی تدوین گردید. این روغن‌ها به همراه آب و سه سورفکتانت غیریونی (Tensiofix EW70، Tensiofix 96 DB10 و Termul 3540) به‌کار گرفته شدند. پس از تعیین نواحی پایدار نمودار فازی، سه نقطه از هر سیستم انتخاب و با 25% اسانس M. communis مخلوط گردید. آزمون‌های پایداری حاکی از آن بود که سه فرمولاسیون نهایی، با اندازه ذرات در محدوده 89/28 تا 65/54 نانومتر، دارای خواص فیزیکی مطلوب و پایداری بالا تحت شرایط سانتریفیوژ و نگهداری بودند. در میان این نانوفرمولاسیون‌ها، FN2 (حاوی روغن پارافین‌ و سورفکتانت DB10) بیشترین سمیت را علیه P. blanchardi و گسترده‌ترین سطح پخش قطره را نشان داد و پس از آن، فرمولاسیون‌های FN5 (متیل‌استر و سورفکتانت Termul 3540) و FN8 (متیل‌استر و سورفکتانت EW70) قرار گرفتند. نتایج حاصل از این مطالعه نشان می‌دهد که نانوفرمولاسیون‌های اسانس M. communis پتانسیل بالایی برای به‌کارگیری به‌عنوان حشره‌کش‌های دوستدار محیط زیست دارا هستند.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Evaluation of the effect of noanoemulsion formulation of Myrtus communis essential oil against date palm white scale insect Parlatoria blanchardi

نویسندگان English

N. Aldosary
I. Alnajim
M. A. Al-Darwish
R. M. S. Alasadi
H. M. Ali
F. M. Al-Hamoud
Date palm research center, University of Basrah, Basrah, Iraq
چکیده English

The date palm white scale insect (PWS) is a serious pest that causes damage to date palm trees by feeding on the plant sap. Formulating plant-derived active ingredients into nanoemulsions can provide effective pest management options. In this study, a low-energy approach was used to formulate a water-in-oil (W/O) nanoemulsion of Myrtus communis L. essential oil. The primary objective was to evaluate the efficacy of a nanoemulsion pesticide against Parlatoria blanchardi (Targioni Tozzetti, 1892). Additionally, the study investigated the spreading capacities of the essential oil nanoformulations. The study consisted of creating three phase diagrams using methyl ester and paraffin oil as the oil phases. These oils were then combined with water and three nonionic surfactants: Tensiofix EW70, Tensiofix 96 DB10, and Termul 3540. After the phase diagram was established, three points were selected from each phase. These selected points were then mixed with 25% essential oil of M. communis. After conducting the stability tests, three formulations with nanoparticle sizes ranging from 28.89 to 54.65 nm exhibited excellent physical properties and demonstrated strong stability under centrifugation and storage conditions. Among these nanoformulations, FN2 (paraffin oil and DB10 surfactant) achieved the highest toxicity against P. blanchardi, and the largest droplet spreading area. It was followed by FN5 (methyl ester and Termul 3540 surfactant) and FN8 (methyl ester and EW70 surfactant). Based on these results, the M. communis essential oil nanoformulations have the potential to serve as environmentally friendly insecticides.

کلیدواژه‌ها English

Nano-pesticide
Insecticidal efficiency
Emulsion stability
Wetting performance
Eco-friendly formulation
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