The essential oil of Laurelia sempervirens is toxic to Trialeurodes vaporariorum and Encarsia formosa

Zapata, Nelson; Vargas, Marisol; Latorre, Esteban; Roudergue, Ximena; Ceballos, Ricardo

doi:10.1016/j.indcrop.2016.02.030

Cited by 15 publications

(10 citation statements)

References 20 publications

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“…Whilst botanicals can exhibit toxicity, they tend to pose minimal environmental impact when used in the crude form at low concentrations 26 as when used as 'home-made' products by smallholder farmers. Furthermore, botanicals break down easily upon exposure to air and sunlight, so are more compatible with ecologically-based pest management systems such as conservation biological control [27][28][29] .…”

mentioning

confidence: 99%

Scope for non-crop plants to promote conservation biological control of crop pests and serve as sources of botanical insecticides

Amoabeng

Stevenson

Mochiah

et al. 2020

Sci Rep

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Besides providing food and shelter to natural enemies of crop pests, plants used in conservation biological control interventions potentially provide additional ecosystem services including providing botanical insecticides. Here we concurrently tested the strength of these two services from six non-crop plants in managing cabbage pests in Ghana over three successive field seasons. Crop margin plantings of Ageratum conyzoides, Tridax procumbens, Crotalaria juncea, Cymbopogon citratus, Lantana camara and Talinum triangulare were compared with a bare earth control in a three-way split plot design such that the crop in each plot was sprayed with either a 10% (w/v) aqueous extract from the border plant species, a negative control (water) and a positive control (emamectin benzoate 'Attack' insecticide). Pests were significantly less numerous in all unsprayed treatments with non-crop plant margins and in corresponding sprayed treatments (with botanical or synthetic insecticide positive control) while treatments with bare earth margin or sprayed with water (negative controls) had the highest pest densities. Numbers of predators were significantly depressed by synthetic insecticide but higher in other treatments whether unsprayed or sprayed with botanical insecticide. We conclude that some plant species have utility in both conservation biological control and as source of botanical insecticides that are relatively benign to natural enemies. In this crop system, however, the additional cost associated with using botanical insecticides was not justified by greater levels of pest suppression than achieved from border plants alone. Insect pest attack causes huge crop losses 1 affecting the potential availability of food for over one billion people 2 , and threatening global food security 3. Effective pest management is critical to meeting global food demands 4-6 and synthetic insecticides have been the principal tool in the past six decades 7,8. Even with the introduction of newer and relatively safer insecticides 8 and increased application per unit area and time 9 , crop loss resulting from insect damage has doubled in the past four decades 1,10,11. Indiscriminate and excessive application has led to the elimination of important organisms in the agroecosystem that support crop production 12,13. This is especially prevalent in developing countries including Ghana where farmers and the environment are exposed to high levels of synthetic insecticides, including active ingredients that have been banned in developed nations due to high toxicity and persistence 14. Inadequate provision of important ecosystem services including natural enemy-mediated pest control reinforces reliance on hazardous inputs such as insecticides and threatens agricultural sustainability 15,16. Conservation biological control based on habitat manipulation has been proposed as a sustainable alternative to synthetic insecticides 17. Habitat manipulation involves intentionally establishing plant species at the farm scale or landscape scale to provide conduc...

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mentioning

confidence: 99%

Scope for non-crop plants to promote conservation biological control of crop pests and serve as sources of botanical insecticides

Amoabeng

Stevenson

Mochiah

et al. 2020

Sci Rep

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“…Different extracts from the plant have shown a variety of activities against insects. Thus, the EO from leaves and bark of L. sempervirens showed insecticidal and repellent activity towards the confused flour beetle Tribolium confusum Torres et al, 2014;Herrera-Rodríguez et al, 2015;Torres et al, 2015;Ortiz et al, 2017), the greenhouse white fly Trialeurodes vaporariorum and its chalcidoid parasitic wasp Encarsia formosa (Zapata et al, 2016), and the pea aphid Acyrthosiphon pisum , while the leaf powder produced lethal and sublethal effects on the maize weevil Sitophilus zeamais (Torres et al, 2015;Noranbuena et al, 2016) and the bean weevil Acanthoscelides obtectus (Bittner et al, 2008). The aim of this study was to determine the chemical composition of the EO from leaves of L. sempervirens and its repellent effect towards fifth-instar nymphs of T. infestans.…”

Section: Chagasmentioning

confidence: 99%

Repellent activity of the essential oil from Laurelia sempervirens (Ruiz & Pav.) Tul. (Monimiaceae) on Triatoma infestans (Klug) (Reduviidae)

Mojica¹,

Alzogaray²,

Mengoni³

et al. 2020

BLACPMA

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“…Zapata et al [112] used essential oil obtained from the leaves of Laurelia sempervirens against greenhouse whitefly (Trialeurodes vaporariorum) and found that it is a highly toxic and powerful fumigant that acts very rapidly. Moreover, it is also toxic against Encarsia formosa, a pathogen that is used commercially to control whitefly, so the application of this essential oil is not compatible with whitefly control by E. formosa.…”

Section: Plant Essential Oilsmentioning

confidence: 99%

Natural Organic Compounds for Application in Organic Farming

2020

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Chemical fertilizers, pesticides, and fungicides are widely used in agriculture to improve crop yields. Most of the compounds used are synthetic, and their overuse causes environmental pollution and human health problems. Currently, several countries are working to reduce the use of agrochemicals. Organic agriculture is now emerging as a sustainable alternative to traditional agriculture using environmentally friendly strategies such as the application of organic fertilizers from plant and animal waste and pesticides based on plant extracts and microbials. However, the availability of commercial biopesticides and organic fertilizers is very limited because there are certain barriers to the commercialization of biological products. These barriers include small available quantities of raw materials and strict registration laws requiring toxicological tests and other studies that are expensive and time consuming. The objective of this review is to provide details about the various organic fertilizers and pesticides that do not have the same disadvantages as synthetic compounds in terms of persistence and toxicity.

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The essential oil of Laurelia sempervirens is toxic to Trialeurodes vaporariorum and Encarsia formosa

Cited by 15 publications

References 20 publications

Scope for non-crop plants to promote conservation biological control of crop pests and serve as sources of botanical insecticides

Scope for non-crop plants to promote conservation biological control of crop pests and serve as sources of botanical insecticides

Repellent activity of the essential oil from Laurelia sempervirens (Ruiz & Pav.) Tul. (Monimiaceae) on Triatoma infestans (Klug) (Reduviidae)

Natural Organic Compounds for Application in Organic Farming

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