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    Wyświetlanie 1-5 z 5
    Tytuł:
    Insecticidal efficacy of silica nanoparticles against Rhyzopertha dominica F. and Tribolium confusum Jacquelin du Val
    Autorzy:
    Ziaee, M.
    Ganji, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/66106.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    insecticidal potential
    silica
    nanoparticle
    Rhyzopertha dominica
    Tribolium confusum
    barley
    pest control
    plant protection
    wheat
    insect pest
    Opis:
    Bioassays were conducted to assess the effects of two silicon dioxide nanoparticles of Aerosil® and Nanosav against adults of Rhyzopertha dominica F. and Tribolium confusum Jacquelin du Val. Silica nanoparticles were applied at the rates of 50, 100, 200 and 300 mg · kg–1 on wheat and peeled barley. The mortality was counted after 1, 2, 3, and 7 days of exposure. Another experiment was carried out to evaluate the effect of food source on the survival of beetles after exposure to silica nanoparticles. Adults were exposed to silica nanoparticles at the rate of 0.2 mg · cm–2 for 1 and 2 days on filter paper inside plastic Petri dishes, respectively. After exposure, the initial mortality was counted and live individuals of both species were held for a week in empty glass vials or vials containing wheat and wheat flour, respectively. Silica nanoparticles have high toxicity on R. dominica and T. confusum adults. Rhyzopertha dominica was more susceptible than T. confusum. However, the mortality of both species increased with increasing concentrations and time exposed to each concentration. At low concentrations, Aerosil® was more effective than Nanosav. Silica nanoparticles were more effective in wheat grains than barley. Results indicated that the initial mortality was so high that the impact of food source on delay mortality was unclear in most cases. Silica nanoparticles were efficient against tested species and can be used effectively in a stored grain integrated pest management program.
    Źródło:
    Journal of Plant Protection Research; 2016, 56, 3
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biogenic silver nanoparticles from Trichodesma indicum aqueous leaf extract against Mythimna separata and evaluation of its larvicidal efficacy
    Autorzy:
    Buhroo, A.A.
    Nisa, G.
    Asrafuzzaman, S.
    Prasad, R.
    Rasheed, R.
    Bhattacharyya, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/65016.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    insect
    pest control
    biogenic substance
    silver nanoparticle
    Trichodesma indicum
    water extract
    leaf extract
    Mythimna separata
    Oriental armyworm
    pest
    larvicidal activity
    Opis:
    Th e present exploration is focused on the bio-fabrication of silver nanoparticles (Ag NPs) using Trichodesma indicum aqueous leaf extract as a reducing agent. Th e synthesized Ag NPs were productively characterized by UV-vis spectroscopy, XRD, and TEM studies. Th e photosynthesis of Ag NPs was done at room temperature for 24 h and at 60°C. Th e green synthesis of spherical-shaped Ag NPs bio-fabricated from T. indicum with a face centred cubic structure showed average particle sizes of 20–50 nm, which is inconsistent with the particle size calculated by the XRD Scherer equation and TEM analysis. We further explored the larvicidal effi cacy of biosynthesized Ag NPs with leaf extracts of T. indicum against Mythimna separata. Th e results showed that Ag NPs (20–50 nm) of T. indicum possess good larvicidal activity against M. separata with an LC50 of 500 ppm. Th us, we can advocate that Ag NPs of 20–50 nm size extracted from T. indicum may be considered in the pest management programme of M. separata in future.
    Źródło:
    Journal of Plant Protection Research; 2017, 57, 2
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Development of thermotolerant isolates of Beauveria bassiana (Bals.-Criv.) Vuill. with ethyl methanesulfonate
    Autorzy:
    Wongwanich, Y.
    Cobelli, P.
    Boonchuay, D.
    Wangsomboondee, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/65516.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    thermotolerance
    entomopathogenic fungi
    Beauveria bassiana
    ethyl methanesulphonate
    brown planthopper
    Nilaparvata lugens
    pest insect
    pest control
    mutation
    fungal isolate
    molecular identification
    pathogenicity test
    Opis:
    Beauveria bassiana is an entomopathogenic fungus that is widely used in Thailand to control pest insects. However, the increasing temperature has influenced the insect control efficiency of the fungus. Therefore, determination of thermotolerant isolates of B. bassiana that can grow and remain pathogenic at higher temperatures than its current optimum temperature may be a better way to control pest insects in a high temperature environment. Three isolates of B. bassiana obtained from the Rice Department, Thailand were selected for mutagenesis using ethyl methanesulfonate (EMS) with subsequent screening at high temperatures (33 and 35°C). In addition, the recovery of fungal growth after exposure to a high temperature for a period of time (5–15 days) and then transferring to 25°C was evaluated. No isolates were found that grew at 35°C but one mutant isolate (BCNT002MT) produced larger diameter colonies and more spores than the corresponding wild type (WT) at 33°C. Growth and spore production of the BCNT002MT isolate were greater than its WT when incubated at 25°C for 14 days following exposure to 33°C for 7 days. In addition, the spore germination level (%) of BCNT002MT was significantly higher than its WT during culture at 25°C after prior exposure to 33°C for 5, 10 and 15 days. The pathogenicity against the brown planthopper, Nilaparvata lugens (Stål), of this mutant isolate was also prominent.
    Źródło:
    Journal of Plant Protection Research; 2017, 57, 4
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Toxicological and environmental aspects of carrot fly [Psila rosae Fabr.] control
    Autorzy:
    Sadlo, S.
    Filar, M.
    Szpyrka, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/55198.pdf
    Data publikacji:
    2008
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    insecticide
    environment
    carrot fly
    residue
    parsley
    chlorothalonil
    fungicide
    toxicology
    plantation
    pest control
    insect
    plant protection
    Psila rosae
    chlorpyrifos
    carrot
    Opis:
    The objectives of this work were to describe the residual behaviour of chlorpyrifos (insecticide) and chlorothalonil (fungicide), applied for the protection of carrot and parsley plantations. The field tests were carried out at farms located near Rzeszów (South-Eastern Poland) on processing carrot and parsley destined for baby food production. The results obtained indicated that disappearance rate of chlorothalonil on carrot leaves was significantly faster and its half-life time was about 7 times shorter than that of chlorpyrifos. In weather conditions of 2006, chlorpyrifos residues in rape carrot and parsley roots were reduced to levels lower than MRL and even the rigorous value of 0.01 mg/kg.
    Źródło:
    Pestycydy; 2008, 1-2; 119-126
    0208-8703
    Pojawia się w:
    Pestycydy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania laboratoryjne przydatnosci biopreparatu Dipel w redukcji prusakow [Blattella germanica L.]
    Laboratory studies of the usefulness of the biopreparation Dipel for redukction of the population of german cocroaches [Blattella germanica L.]
    Autorzy:
    Zukowski, K
    Powiązania:
    https://bibliotekanauki.pl/articles/873190.pdf
    Data publikacji:
    1993
    Wydawca:
    Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
    Tematy:
    ochrona srodowiska
    zwalczanie szkodnikow
    owady
    biopreparaty
    badania laboratoryjne
    szkodniki zywnosci
    prusak
    Blattella germanica
    Dipel
    szkodniki magazynowe
    karaczany
    environment protection
    pest control
    insect
    biopreparation
    laboratory research
    food pest
    German cockroach
    Blatella germanica
    Dipel biopreparation
    storage pest
    cockroach
    Opis:
    Określono wrażliwość prusaków (Blattella germanica L.) różnorodnych pod względem wieku i płci, na owadobójczy biopreparat z Bacillus thuringiensis var. kurs taki (Dipel).
    In the studies conducted for finding of biological factors effectively controlling insects of hygienic importance German cockroaches were subjected to the action of an insecticide containing spores of Bacillus thuringiensis var. kurstaki. One gram of the insecticide contained 25 miliard (US billion) spores with protein endotoxin crystals. The inscets were given drinking water and food containing 1.0%, 0.5%, 0.25%, 0.125% of the initial preparation. The experiment was carried out on 1800 cockroaches. Half of them (600 mature insects differentiated for sex and age and 300 larvae in stage 1st of development) were treated with the preparation, the remaining insects served for control. The insects were kept at about 28°C. After 9 days o the experiment in the group receiving 1% Dipel on food 76.4% mature insects and 83,0% larvae in 1st stage of development died. After 14 days all males died, and after 17 days died all females. In the control group died in that time 2.3% and 3.4% respectively. In case of lower per cent of the preparation in food the time of dying was prolonged, and at the lowest per cent it was 22 days. The study showed that Dipel effectively reduced the population of German cockroaches, and although in initial period its action was slower than that of chemical agents, it could be used for the control of these insects, especially as it in non-toxic for humans, warm-blooded animals and useful insects.
    Źródło:
    Roczniki Państwowego Zakładu Higieny; 1993, 44, 2-3; 227-230
    0035-7715
    Pojawia się w:
    Roczniki Państwowego Zakładu Higieny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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