Ovicidal activity of different plant extracts on two- spotted spider mite (Tetranychus urticae Koch) (Acari: Tetranychidae) (original) (raw)
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African Journal of Biotechnology, 2011
Extracts of different parts of 12 plant species were evaluated for their potential for acaricidal activity that could lead to the development of new and safe bio-acaricides. The crude methanol extracts of these plants were tested for their acaricidal activity against the two-spotted spider mite Tetranychus urticae Koch in a bioassay under controlled conditions. All the extracts exhibited significant adult mite mortality as compared to control. Lolium perenne L. (flower, leaf), Anthemis vulgaris L. (flower) and Chenopodium album L. (flower, leaf) extracts had significantly higher mortality rates than azadirachtin (10 g/L) and the synthetic pesticides tested at 5% concentration in adhesive tape and residual film method. Our results showed that several plant extracts have good potential for acaricidal activity and are worth further investigation.
Bioactivity of Indigenous Medicinal Plants against the Two-Spotted Spider Mite, Tetranychus urticae
Journal of agricultural science, 2017
Forty two methanol extracts and 12 aqueous extracts of 29 indigenous medicinal plant species were tested for their acaricidal bioactivity against the two spotted spider mite, Tetranychus urticae adults at the laboratory. Fourteen methanol plant extracts caused significant mortality in mites. This is the first report for the potential effect on survival of mites for 27 tested endemic plant species. Methanol whole plant extracts (WPEs) of Lotus carmeli, Alchemilla diademata, Eryngium deserlorum and aqueous fruit extracts (FrEs) of Melia azedarach caused toxic effects against the adult mites in the range of 41-46% mortality. The methanol WPE of L. carmeli and the aqueous FrE of M. azedarach (1:5) caused the highest mite mortality of 43.55% and 45.55%, respectively and each was used as reference sample for potential acaricidal activity in the methanol and aqueous treatment groups. The latter extract was not significantly different in its effect from aqueous extracts of M. azedarach leaf extract (LE) and Achillea damascena WPE. Methanol extracts of Salvia rubifolia flowers and Calendula palestina FrE were found to be more active against the adult mite than their extracts of other plant parts as leaves and flowers, respectively. The former two extracts, flower extracts of Anthemis scariosa, Echinops gaillardoti, Nepeta curviflora, and Ranunculus cuneatus, leaves and stems extract of An. scariosa and WPEs of Melissa inodora, Ranunuculus myosuroides, Origanum libanoticum and Ac. damascena were found to be comparable in their acaricidal activity to that of the whole plant extract of L. carmeli. Thus, these bioactive extracts of some local plant species can cause toxicity to adult T. urticae mites and consequently could be an alternative control for mite pests.
Acaricidal activity of plant extracts on red spider mite
Four Aqueous plant extract are used for the control of red spider mite.Adult mortality, egg mortality was observed. low concentration are effectively reduce the Red Spider Mite Population. It will reduce the insecticidal pollution in the environment and not harmful to environment
Evidence-Based Complementary and Alternative Medicine
Currently, pests control using chemical acaricides constitutes worries for ecologists and health care people as these chemical products create damage to the ecosystem as well as the development of spider mites resistance. Such concerns request deep and rapid feedback by looking for new alternative and eco-friendly methods. In recent years, a new field is evolving in the use of essential oils in pest management practices. Essential oils have been considered as potential pest management agents, because they demonstrate to have a broad range of bioactivity, possess contact, and fumigant toxicity. In addition, the major advantages of many plant-based acaricides lie in their low toxicity to agroecosystems. Botanical acaricides composed of essential oils may prove to be a good choice for the more persistent synthetic acaricides. In this study, the acaricidal effect of four plant-derived essential oils against adults of the two important crop pests, Tetranychus urticae (Koch) 1836 and Eute...
Our local traditional herbal and medical plant may be interduce alternative bio material alter the biology of the red spider mite Tetranychus urticae Koch. The present study was conducted to determine the direct and residual effects of the two natural plant extracts, aerial parts of Artemisia vulgaris L. and the seeds of Acacia concinna (Willd.) using soxhelt extractor, against the two spotted spider mite, Tetranychus urticae Koch, at the laboratory controlled conditions, 30±2C° and 70±5% RH. Two concentrations, 0.25% & 0.5% were utilized to study its effects on the biological aspects of T. urticae. The results confirmed the effective influence of these extracts on mite life aspects, which altered and prolonged the mite life cycle, and that reduced the number of generation/year. Moreover, the used extracts also achieved of high mortality percentages, reached 65.52% and 51.72% in pre-oviposition period and oviposition period respectively, when treated with the highest concentration of Artemisia extract. Reduction in hatchability achieved 61.11%, 57.11%, 54.11% and 52.11% for Artemisia 0.25% & 0.5% and Acacia 0.25% & 0.5% respectively
Journal of Entomology and Nematology
The acaricidal activity of Chrozophora oblongifolia (Delile) Spreng. (Euphorbiaceae) extracts collected from Dakhla Oasis, Western Desert of Egypt was examined against larvae and adult females of Tetranychus urticae Koch (Acari: Tetranychidae). Acaricidal activity-guided isolation of methylene chloride, ethyl acetate, butanol fractions resulted in separation and identification of phydroxybenzaldehyde (1), 3,5-dimethoxy-4-hydroxybenzaldehyde (2), scopoletin (3), amentoflavone (4), apigenin 7-O-β-D-glucopyranoside (5) and apigenin 7-O-β-D-[2",6"-bis(4-hydroxy-E-cinnamoyl)] glucopyranoside (6). The isolated compounds were identified by MS and NMR spectral analyses. The susceptibility of the larvae and adult females of T. urticae Koch to the tested isolated compounds revealed that apigenin 7-O-β-D-[2",6"-bis(4-hydroxy-E-cinnamoyl)] glucopyranoside (6) and apigenin 7-O-ß-D-glucopyranoside (5) isolated from butanol fraction (most effective fraction) exhibited a high degree of acaricidal activity using leaf-dipping technique against larvae after 7-days of exposure, respectively.
Khan, B.S., M.A. Shahzad, M.I. Ashraf, Z.M. Sarwar, M. Farooq and A. Rasool. 2024. Evaluation of five different botanical extracts against some pests and predators in laboratory conditions. Pakistan Journal of Agricultural Research, 37(1): 62-69., 2024
The current study was conducted to evaluate the toxicity and repellency of leaf aqueous extracts i.e., Melia azedarach (Bakain), Nicotiana tabacum L. (Tobacco), Eucalyptus globulus Labill (Eucalyptus), Moringa oleifera L. (Moringa) and Mentha piperita L. (Peppermint) against two major sucking pests i.e. aphid (Sitobion avenae F.) and two-spotted spider mites (Tetranychus urticae Koch) and their natural enemies such as ladybird beetle (Coccinella septempunctata Linnaeus) and predatory mite (Amblyseius andersoni Chant). The leaf dip method was used to conduct bioassay and this experiment was performed under Complete Randomized Design (CRD) with three replications. The results showed that N. tabacum extract was more toxic to aphids, two-spotted spider mites, ladybird beetles and predatory mites and caused 80.82, 81.49, 39.77 and 51.55% mortalities, respectively, after 96 hours. M. azedarach extract showed the second highest mortalities i.e., 73.85% in aphids, 70.54% in two-spotted spider mites, 31.05% in ladybird beetles and 46.49% of predatory mites. Mortality trend observed in other aqueous extracts was eucalyptus > moringa > peppermint. The repellent effect of these extracts was also evaluated and observed after 12 and 24 hours. N. tabacum extract caused 80.55 and 86.88% repellencies against aphid and two-spotted spider mites, while 68.55 and 74.34% against ladybird beetle and predatory mites, followed by bakain > peppermint > moringa > eucalyptus. The results revealed that all these leaf aqueous extracts can be used effectively against aphids and two-spotted spider mites, but we have to be careful with their slightly toxic effects on predators.
Phytoparasitica, 2004
Twenty-nine plant extracts of local species were evaluated for their potential as a source of bioactive ingredients with significant acaricidal activity that could lead to the development of new and safe bio-acaricides. The crude extracts (70% ethanol) of these plants were tested for their acaricidal activity against the carmine spider mite Tetranychus cinnabarinus in a bioassay under controlled conditions. Mortality, repellency, and the number of eggs laid were measured. Extracts from Eucalyptus camaldulensis and Inula viscosa caused more than 25% mortality. Sixteen plant extracts showed significant repellency compared with the control. The six best extracts, resulting in more than 75% repellency, were from Allium sativum, Capparis spinosa, Cupressus sempervirens, Lupinus pilosus, Rhus coriaria and Tamarix aphylla. Extracts from 16 plants were found to cause a significant reduction in the number of eggs laid compared with the control. The greatest reduction was achieved by extracts from C. spinosa, Cyperus rotundus, E. camaldulensis, L pilosus, Punica granatum, R. coriaria and T. aphyUa. A relatively negative fit was found between the mean number of repelled mites and the number of eggs laid (r=-0.65), which might indicate that most repelled mites were unable to lay eggs before leaving the leaf discs of the bioassay. Our results show that several plant extracts have good potential for acaricidal activity and are worth further investigation.