Control of Portulaca oleracea by boldo and lemon essential oils in different soils

Blázquez, María Amparo; Carbó, Ester

doi:10.1016/j.indcrop.2015.07.019

Cited by 26 publications

(20 citation statements)

References 30 publications

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“…Sets of 20 seeds (10 for maize), each with five replicates (ten replicate in maize) per treatment, were homogenously distributed in Petri dishes (9 cm diameter) between two layers of filter paper (Whatman No.1) moistened with 4 mL of distilled water and with 0 (control), 0.125, 0.250, 0.5, and 1 µL/mL of winter savory, peppermint, and anise essential oils. Petri dishes were sealed with parafilm and incubated in a germination chamber Equitec EGCS 301 3SHR model, according to previous assays [54], alternating between 30.0 ± 0.1 °C 16 h in light and 20.0 ± 0.1 °C 8 h in dark, with ( E. crus-galli , maize, and rice) and without ( P.oleracea , L. multiflorum , and tomato) humidity. To evaluate the herbicidal activity of the essential oils, the number of germinated seeds was counted and compared with those of untreated seedlings.…”

Section: Methodsmentioning

confidence: 99%

Phytotoxicity of Essential Oils on Selected Weeds: Potential Hazard on Food Crops

Ibáñez

Blázquez

2018

Plants

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The chemical composition of winter savory, peppermint, and anise essential oils, and in vitro and in vivo phytotoxic activity against weeds (Portulaca oleracea, Lolium multiflorum, and Echinochloa crus-galli) and food crops (maize, rice, and tomato), have been studied. Sixty-four compounds accounting for between 97.67–99.66% of the total essential oils were identified by Gas Chromatography-Mass Spectrometry analysis. Winter savory with carvacrol (43.34%) and thymol (23.20%) as the main compounds produced a total inhibitory effect against the seed germination of tested weed. Menthol (48.23%), menthone (23.33%), and iso-menthone (16.33%) from peppermint only showed total seed germination inhibition on L. multiflorum, whereas no significant effects were observed with trans-anethole (99.46%) from anise at all concentrations (0.125–1 µL/mL). Low doses of peppermint essential oil could be used as a sustainable alternative to synthetic agrochemicals to control L. multiflorum. The results corroborate that in vivo assays with a commercial emulsifiable concentrate need higher doses of the essential oils to reproduce previous in vitro trials. The higher in vivo phytotoxicity of winter savory essential oil constitutes an eco-friendly and less pernicious alternative to weed control. It is possible to achieve a greater in vivo phytotoxicity if less active essential oil like peppermint is included with other active excipients.

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Section: Methodsmentioning

confidence: 99%

Phytotoxicity of Essential Oils on Selected Weeds: Potential Hazard on Food Crops

Ibáñez

Blázquez

2018

Plants

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“…Thus, several sesquiterpenoid compounds are principally isolated in C. bergamia , and in its more related species and in C. limon . A notable example is the sesquiterpene α-bisabolol, frequently isolated in C. bergamia (Sawamura et al, 2006; Belsito et al, 2007; Costa et al, 2010; Furneri et al, 2012), C. limon (Blázquez and Carbó, 2015; Cannon et al, 2015; Loizzo et al, 2016; Zhang et al, 2017), C. aurantifolia (Gancel et al, 2002; Minh Tu et al, 2002a; Chisholm et al, 2003b; Zhang et al, 2017), and C. medica (Lota et al, 1999; Verzera et al, 2005; Aliberti et al, 2016). Even there are terpene compounds that have been reported in C. bergamia and just once in C. limon as the monoterpene linalyl propionate [ C. bergamia (Poiana et al, 2003; Verzera et al, 2003; Costa et al, 2010) and C. limon (Cannon et al, 2015)].…”

Section: Volatile Compounds Identified In Essential Oils From Peel Lmentioning

confidence: 99%

Volatile Compounds in Citrus Essential Oils: A Comprehensive Review

González‐Mas¹,

Rambla²,

et al. 2019

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The essential oil fraction obtained from the rind of Citrus spp. is rich in chemical compounds of interest for the food and perfume industries, and therefore has been extensively studied during the last decades. In this manuscript, we provide a comprehensive review of the volatile composition of this oil fraction and rind extracts for the 10 most studied Citrus species: C. sinensis (sweet orange), C. reticulata (mandarin), C. paradisi (grapefruit), C. grandis (pummelo), C. limon (lemon), C. medica (citron), C. aurantifolia (lime), C. aurantium (bitter orange), C. bergamia (bergamot orange), and C. junos (yuzu). Forty-nine volatile organic compounds have been reported in all 10 species, most of them terpenoid (90%), although about half of the volatile compounds identified in Citrus peel are non-terpenoid. Over 400 volatiles of different chemical nature have been exclusively described in only one of these species and some of them could be useful as species biomarkers. A hierarchical cluster analysis based on volatile composition arranges these Citrus species in three clusters which essentially mirrors those obtained with genetic information. The first cluster is comprised by C. reticulata, C. grandis, C. sinensis, C. paradisi and C. aurantium, and is mainly characterized by the presence of a larger abundance of non-terpenoid ester and aldehyde compounds than in the other species reviewed. The second cluster is comprised by C. junos, C. medica, C. aurantifolia, and C. bergamia, and is characterized by the prevalence of mono- and sesquiterpene hydrocarbons. Finally, C. limon shows a particular volatile profile with some sulfur monoterpenoids and non-terpenoid esters and aldehydes as part of its main differential peculiarities. A systematic description of the rind volatile composition in each of the species is provided together with a general comparison with those in leaves and blossoms. Additionally, the most widely used techniques for the extraction and analysis of volatile Citrus compounds are also described.

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“…Blázquez and Carbó [77] used boldo EO (compared with a commercially available lemon EO) as an efficient herbicide against Portulaca oleracea (a highly adaptable weed encountered on the summer crops). The herbicidal effect was tested by the authors against weed seeds, evaluating the germination of the seeds when exposed to EOs.…”

Section: Herbicidal Properties Of Eosmentioning

confidence: 99%

The application of essential oils as a next-generation of pesticides: recent developments and future perspectives

Fierăscu

Fierascu

Dinu-Pîrvu

et al. 2019

Zeitschrift Für Naturforschung C

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Abstract The overuse of synthetic pesticide, a consequence of the rush to increase crop production, led to tremendous adverse effects, as they constitute a major pollutant for both soils and water, with a high toxicity towards humans and animals and, at the same time, led to development of pest resistance. In the last period, the researches were directed towards finding new solutions with a lower toxicity, less damaging behaviour towards the environment, and a better specificity of action. In this context, the use of essential oils, a complex and unique mixture of compounds, can be considered for the next-generation pesticides. This review aims to present the main applications of the essential oils as insecticides, herbicides, acaricides, and nematicides, as they emerged from the scientific literature published in the last 5 years (2015 to present). From the identified articles within the time period, only those dealing with essential oils obtained by the authors (not commercially available) were selected to be inserted in the review, characterized using established analytical techniques and employed for the envisaged applications. The review is concluded with a chapter containing the main conclusions of the literature study and the future perspectives, regarding the application of essential oils as next-generation pesticides.

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Control of Portulaca oleracea by boldo and lemon essential oils in different soils

Cited by 26 publications

References 30 publications

Phytotoxicity of Essential Oils on Selected Weeds: Potential Hazard on Food Crops

Phytotoxicity of Essential Oils on Selected Weeds: Potential Hazard on Food Crops

Volatile Compounds in Citrus Essential Oils: A Comprehensive Review

The application of essential oils as a next-generation of pesticides: recent developments and future perspectives

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