Use of Essential Oils as Bioherbicides

Ramezani, Sadrollah; Saharkhiz, Mohammad Jamal; Ramezani, Fatemeh; Fotokian, Mohammad Hossein

doi:10.1080/0972060x.2008.10643636

Cited by 37 publications

(34 citation statements)

References 33 publications

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“…On the contrary, the phytotoxic and allelopathic activities of several Eucalyptus species are well known in both natural and modified ecosystems (Chu et al, 2014) and some EOs from Eucalyptus spp. have been proposed for use in agricultural and forestry management (Ramezani et al, 2008). Despite the fact that the Eucalyptus genus is probably among the most investigated for its allelopathic properties, no studies are currently available on the activity of E. gunnii EO on seeds growing.…”

Section: Phytotoxic Activitymentioning

confidence: 99%

Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii

et al. 2020

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The aim of this study was to characterize the chemical composition and to evaluate the antimicrobial and phytotoxic properties of the essential oils (EOs) obtained from leaves of Leptospermum petersonii chemotype "Variety B" and Eucalyptus gunnii, native to Australia. Geranyl acetate, γ-terpinene, geraniol, terpinolene, α-pinene, p-cimene, and linalool were the main components in L. petersonii EO, confirming also the existence of several chemotypes in such taxa; on the other hand, 1,8-cineole, trans-sabinene hydrate acetate, globulol, longicyclene, terpinolene, and camphene were present in major amounts in the E. gunnii EO. Chemical analysis of L. petersonii revealed that it belongs to the variety "B." E. gunnii EO showed good antibacterial activity, with an MIC of 0.5 and 2 µg/mL against Staphylococcus aureus, and Pectobacterium carotovorum, respectively. The activity of E. gunnii EO was stronger than L. petersonii EO, whose maximum MIC reached 5 µg/mL. E. gunnii and L. petersonii EOs were particularly effective in inhibiting the biofilm formation by S. aureus, already at a concentration of 0.01 µg/mL. The other strains were resistant to both EOs up to a dose of 0.05 µg/mL. The maximum inhibition on biofilm formed by P. carotovorum was recorded for E. gunnii EO, reaching a value of 93.12% at 1.0 µg/mL. This is the first manuscript which studies the biofilm inhibition by EOs and evaluates their effects on biofilm metabolism. Both EOs were more effective against P. carotovorum. In addition, even though L. petersonii EO 0.1 µg/mL was unable to inhibit biofilm formation by Escherichia coli, it decreased the metabolic activity of the biofilm to 78.55% compared to control; furthermore, despite it inducing a relatively low inhibition (66.67%) on biofilm formation, it markedly affected metabolic activity, which decreased to 16.09% with respect to the control. On the contrary, L. petersonii EO 0.5 µg/mL induced a 79.88% inhibition of S. aureus

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Section: Phytotoxic Activitymentioning

confidence: 99%

Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii

et al. 2020

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“…Although some reviews on the potential of essential oils as repellents and/or insecticides have been published, there is no critical review about their use in stored products protection. One of the most important characteristics of essential oils, their phytotoxicity, may favor their use as herbicides, but at the same time limit their use in crop protection [14,15]. Stored product sector seems to be a perfect candidate for the development of new EO-based alternative pest control strategies.…”

Section: Eos Against Stored Product Insectsmentioning

confidence: 99%

Essential Oils in Stored Product Insect Pest Control

Campolo

Giunti

Russo

et al. 2018

Journal of Food Quality

200

113

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Among botanical extracts used as insecticides, essential oils (EOs) are promising alternatives to chemical insecticides. EOs are synthesized by plants, and they play a key role in plant signaling processes including also attractiveness toward pollinators and beneficial insects. Plant species producing essential oils (over 17,000 species) are called aromatic plants and are distributed worldwide. Our review aims to evaluate research studies published in the last 15 years concerning the use of EOs in stored product protection. More than 50% of the retrieved manuscripts have been published by authors from Eastern countries (Iran, China, India, and Pakistan), investigating different aspects related to insect pest management (exposure route, effect on the target pest, and mode of action). Coleoptera was the most studied insect order (85.41%) followed by Lepidoptera (11.49%), whereas few studies targeted new emerging pests (e.g., Psocoptera). Almost all the trials were carried out under laboratory conditions, while no experiments were conducted under real operating conditions. Future research studies concerning the use of EOs as insecticides should focus on the development of insecticide formulations which could be successfully applied to different production realities.

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“…Aromatic plants are rich in essential oil content, and these essential oils have allelopathic effects, therefore, they could be used for weed control in agriculture (Ramezani et al, 2008). Palmer amaranth (Amaranthus palmeri L. (Onen et al, 2002).…”

Section: Weed Control Using Plant Essential Oilsmentioning

confidence: 99%

Use of natural products for weed management in high-value crops: An Overview

2019

AJAR

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Over the last five decades, weed management systems have relied primarily on synthetic herbicides. Due to the concerns over the potential impact of chemicals on human health and the environment, efforts are being made to reduce the heavy reliance on synthetic herbicides. To reduce synthetic herbicides, use of natural products such as essential oils, plant extracts, allelochemicals, agricultural by-products, and some microbes are gaining attention because they are safe due to their short environmental half-life and low toxicity. These natural product bioherbicides are a good alternative to synthetic herbicides especially in organic agriculture since they focus on environmental protection, practical viability, compatibility for integrated programs, and ecological stability. Most of the commercially available natural herbicides are non-selective and require careful application in order to preserve the crop of interest. Although many studies in this direction have been undertaken, the use of these natural products is still not common because of the difficulties in their synthesis due to their complex structure, cost effectiveness, poor results in field trials, and rapid degradation. No single above mentioned natural product has the potential to comprehensively replace chemical weed management; however, an integrated approach may provide better results. Thus, the role of bioherbicides in modern weed management is complementary rather than exclusive. ABSTRACT AJAR: http://escipub.com/american-journal-of-agricultural-research/ 1 Rupinder Saini and Sukhbir Singh, AJAR, 2019; 4:25 AJAR: http://escipub.com/american-journal-of-agricultural-research/ 2

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Use of Essential Oils as Bioherbicides

Cited by 37 publications

References 33 publications

Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii

Chemical Composition and Biological Activities of the Essential Oils of Leptospermum petersonii and Eucalyptus gunnii

Essential Oils in Stored Product Insect Pest Control

Use of natural products for weed management in high-value crops: An Overview

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