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    Wyświetlanie 1-4 z 4
    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:
    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
    Tytuł:
    Biorational control of arthropod pests with emphasis on the use of the chitin synthesis inhibitor novaluron
    Autorzy:
    Ishaaya, I.
    Lebedev, G.
    Ghanim, M.
    Horowitz, A.R.
    Powiązania:
    https://bibliotekanauki.pl/articles/55215.pdf
    Data publikacji:
    2011
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    biorational control
    arthropod
    pest
    chitin synthesis
    novaluron
    insecticide
    insect
    growth regulator
    buprofezin
    diflubenzuron
    chlorfluazuron
    pyriproxyfen
    tebufenozide
    methoxyphenozide
    neonicotinoid
    imidacloprid
    acetamiprid
    thiamethoxam
    glutamate receptor
    gamma-aminobutyric acid
    abamectin
    Spinosad preparation
    novel insecticide
    Opis:
    Efforts have been made during the past three decades to develop insecticides with selective properties that act specifically on biochemical sites present in a particular insect group, but whose properties differ from those present in mammals. This approach has led to the discovery of compounds that affect the hormonal regulation of molting and developmental processes in insects such as ecdysone agonists, juvenile hormone (JH) mimics and chitin synthesis inhibitors. The search for potent acylureas has led to the development of novaluron (Rimon) developed by Makhteshim Chemical Works. The LC-50 value of novaluron on 3rd-instar Spodoptera littoralis fed on treated leaves is approximately 0.1 mg a.i./liter. This value resembles that of chlorfluazuron and is tenfold lower than that of teflubenzuron. Novaluron affects nymphs of Bemisia tabaci more than chlorfluazuron and teflubenzuron. Artificial rain, at a rate of 40 mm/h applied 5 and 24 h after treatment in a cotton field had no appreciable effect on the potency of novaluron on both S. littoralis larvae and B. tabaci nymphs. Hence, novaluron can be used in tropical areas and during rainy seasons. In general, benzoylphenyl ureas had no direct effect on parasitoids and phytoseiids and are considered mildly affect other natural enemies. Novaluron has no cross-resistance with conventional insecticides, the JH mimics pyriproxyfen and neonicotinoids. As such, it is considered an important compound in pest management programs.
    Źródło:
    Pestycydy; 2011, 1-4
    0208-8703
    Pojawia się w:
    Pestycydy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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