Essential oils vs. Synthetic insecticides: Evaluating field performance, profitability, and environmental impact in Tuta absoluta (Lepidoptera: Gelechiidae) management DOI Creative Commons

Mahfoud Babaousmail

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Abstract This study evaluated the efficacy, environmental impact, and economic feasibility of essential oils (EOs) as biopesticides for controlling Tuta absoluta (tomato leaf miner). Laboratory bioassays were conducted to assess larvicidal effects four oils: peppermint, clove, basil, lemongrass. Among them, peppermint EO demonstrated highest potency (LC₅₀: 59.79 ppm, LC₉₀: 2431.24 ppm) fastest action (LT₅₀: 9.83 hours, LT₉₀: 22.37 hours). Given its strong performance, was further under field conditions. Field trials on two tomato farms using a completely randomized design (CRD). Each site (S1 S2) consisted 18 plots, divided into three treatments: TEO (essential oil), TIS (synthetic pesticide), T0 (untreated control), with five replicates per treatment. Foliar fruit damage assessments revealed that in S1, reduced foliar from 8.82 ± 0.91 (T0) 4.62 0.67 by second observation 34.86 8.54 21.42 5.19 sixth observation. Fruit also significantly reduced, 38.16 7.32 10.36 2.35 S1 44.95 8.84 12.70 1.87 S2. Economic analysis, based profit percentage yield, showed achieved an average rate 26%, higher than (1%) comparable (30%). Additionally, Environmental Impact Quotient Use Rating (EIQ-FUR) calculated impact. low footprint, FUR 1.3 compared 29.31 chemical pesticides. These findings highlight potential safer, environmentally friendly alternative synthetic insecticides. Further studies are needed optimize formulation application strategies.

Language: Английский

Formulation of Ethyl Cellulose Nanoparticles Encapsulated with Osthole Provides Long-Lasting Plant Protection against a Major Pest Mite DOI

Fang Dong,

Jie Men,

Ziwei Ding

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

The broader use of botanical pesticides has been limited by shorter residual activity on plants, slower onset action, and higher costs compared with conventional pesticides. These challenges could be overcome the development simple, cost-effective, long-lasting preventive nanocomposites for In this study, we successfully developed a low-cost ethyl cellulose (EC)-based delivery system pesticide osthole (OST), designed to provide extended protection against Tetranychus urticae infestations. A comparative analysis three (graphene oxide (GO)-OST, EC-OST, chitosan (CS)-OST) revealed that EC-OST exhibited superior thermal stability, UV resistance, controlled release OST payload, strong acaricidal activity. degradation leaf surfaces was reduced encapsulation in EC, while its penetration into plant tissues improved. When applied leaves, an increase T. mortality, reduction reproduction egg adhesion, impairment feeding behavior through searching times were observed. peak occurrence infestation delayed 10 days following application reducing damage protecting plants more than 20 days. This nanoinsecticide allows low-frequency application, farmers' production costs, increasing profitability, thereby offering great potential promoting protection.

Language: Английский

Citations

0
Essential oils vs. Synthetic insecticides: Evaluating field performance, profitability, and environmental impact in Tuta absoluta (Lepidoptera: Gelechiidae) management DOI Creative Commons

Mahfoud Babaousmail

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Abstract This study evaluated the efficacy, environmental impact, and economic feasibility of essential oils (EOs) as biopesticides for controlling Tuta absoluta (tomato leaf miner). Laboratory bioassays were conducted to assess larvicidal effects four oils: peppermint, clove, basil, lemongrass. Among them, peppermint EO demonstrated highest potency (LC₅₀: 59.79 ppm, LC₉₀: 2431.24 ppm) fastest action (LT₅₀: 9.83 hours, LT₉₀: 22.37 hours). Given its strong performance, was further under field conditions. Field trials on two tomato farms using a completely randomized design (CRD). Each site (S1 S2) consisted 18 plots, divided into three treatments: TEO (essential oil), TIS (synthetic pesticide), T0 (untreated control), with five replicates per treatment. Foliar fruit damage assessments revealed that in S1, reduced foliar from 8.82 ± 0.91 (T0) 4.62 0.67 by second observation 34.86 8.54 21.42 5.19 sixth observation. Fruit also significantly reduced, 38.16 7.32 10.36 2.35 S1 44.95 8.84 12.70 1.87 S2. Economic analysis, based profit percentage yield, showed achieved an average rate 26%, higher than (1%) comparable (30%). Additionally, Environmental Impact Quotient Use Rating (EIQ-FUR) calculated impact. low footprint, FUR 1.3 compared 29.31 chemical pesticides. These findings highlight potential safer, environmentally friendly alternative synthetic insecticides. Further studies are needed optimize formulation application strategies.

Language: Английский

Citations

0