Encapsulated Clove Bud Essential Oil: A New Perspective as an Eco-Friendly Biopesticide

Zoran Milićević, Slobodan Krnjajić, Milan Stević, Jovana Ćirković, Aleksandra Jelušić, Mira Pucarević and Tatjana Popović
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Zoran Milićević: Field Test d.o.o., Vinogradska 150b, 11000 Belgrade, Serbia
Slobodan Krnjajić: Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11030 Belgrade, Serbia
Milan Stević: Faculty of Agriculture, University of Belgrade, Nemanjina 6, 11080 Belgrade, Serbia
Jovana Ćirković: Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11030 Belgrade, Serbia
Aleksandra Jelušić: Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11030 Belgrade, Serbia
Mira Pucarević: Faculty of Environmental Protection, Educons University, Vojvode Putnika 85-87, 21208 Sremska Kamenica, Serbia
Tatjana Popović: Department of Plant Diseases, Institute for Plant Protection and Environment, Teodora Drajzera 9, 11040 Belgrade, Serbia

Agriculture, 2022, vol. 12, issue 3, 1-13

Abstract: In this work by encapsulation technique we have synthetized three new c love bud essential oil (CEO) Emulsifiable Concentrate (EC) formulations depending on the carrier (synthetic zeolite- F-CSZ, nature zeolite- F-CNZ and gelatin- F-CG). The main idea was to develop an eco-friendly biopesticide that can find use in plant protection as an alternative to the use of conventional pesticides. By encapsulation we wanted to enable water solubility and ensure prolonged efficacy of the essential oil. Biological activity of designed CEO formulations was tested on potato tuber moth Phthorimaea operculella (fumigant mode of action), gray mold fungal pathogen Botrytis cinerea (preserver coatings), and soft rotting bacterial pathogens Pectobacterium carotovorum (subsp. carotovorum and brasiliensis ) and Dickeya dianthicola (direct competition). CEO formulations evinced a prolonged action on mortality of P. operculella during the insects’ exposure to the concentration of the emulsions of 40 µL L −1 air. The mortality gradually decreased from a probability of 100% after the first 24 h to 50% after 5 days for F-CSZ or after 4 days for F-CNZ and F-CG. The most promising formulation is F-CSZ enabling activity during 14 days of exposure, while the effect of the other two formulations lasted 10 days. All three formulations produced a strong fungicidal effect against B. cinerea by preventing infection and disease development. The best efficacy was evidenced with F-CSZ (synthetic zeolite as a carrier) showing 100% efficacy when it was used even at the lowest tested concentration of active CEO (1%). The results of in vitro testing against soft rot pathogens determined the MIC value of CEO formulations to be 1% of active CEO. By this research, we present a novel perspective on the use of essential oils as an alternative, environmental biopesticide. CEO formulations can be commercially exploited as a fumigant or preserver coatings to extend the shelf life of stored products or the fresh-fruit market.

Keywords: essential oil; zeolite; gelatin; encapsulation; pest control (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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