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Wyszukujesz frazę "insect pest" wg kryterium: Temat


Wyświetlanie 1-8 z 8
Tytuł:
An influence of herbs on the sex structure in populations of insect pests of stored products
Autorzy:
Klys, M.
Powiązania:
https://bibliotekanauki.pl/articles/65239.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
herb
sex structure
animal population
insect pest
pest
stored product
Oryzaephilus surinamensis
Rhyzopertha dominica
Sitophilus oryzae
Opis:
The effects of powdered herbs (lavender Lavandula officinalis L., peppermint Mentha piperita L. and basil Ocimium basilicum L.) added to the food substances of three insect species: the rice weevil Sitophilus oryzae (L.), lesser grain borer Rhyzopertha dominica (F.), and the saw-toothed grain beetle Oryzaephilus surinamensis (L.) on the life span and development of the three insect species as well as habitat conditions, sex structure, and the survivability of males and females were considered. The experiments were conducted in the laboratory at a temperature of 28°C and relative humidity (RH) 60 ±5%. In all the studied populations, high female mortality was found (♂/♀ < 1). The studied populations were: the rice weevil and the lesser grain borer cultured in wheat grain with herb additions, and the saw-toothed grain beetle cultured in semolina with herb additions. Among the herbs used, peppermint caused a significant effect in the form of increased mortality rates among females of S. oryzae and O. surinamensis. Lavender and basil had a similar impact among R. dominica females. The herbs applied in the experiments intensified the mortality of females and, consequently, led to the disappearance of entire populations.
Źródło:
Journal of Plant Protection Research; 2012, 52, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Giant willow aphid (Tuberolachnus salignus Gmelin, 1790) – a literature review
Autorzy:
Bochniarz, Alina
Powiązania:
https://bibliotekanauki.pl/articles/2148077.pdf
Data publikacji:
2020-12-30
Wydawca:
Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy
Tematy:
Lachnidae
Salix
pest
insect
invasive species
Opis:
Tuberolachnus salignus is a cosmopolitan aphid that predominantly feeds on the willow. It can be an economically im-portant pest of this plant. The aim of the study was to present the thematic scope of the literature on this species in Poland and in the world. The typical issues related to aphid biology (life cycle, nutrition, distribution) and its potential harmfulness are consid-ered. Additionally, aphid genetics, dyes, natural enemies, indirect influence on the soil environment as well as the use of this insect species in research on plant physiology are taken into account. It was found that in recent years, the studies on giant willow aphid have been mainly motivated by the potential utilisation of the results in the protection of willow against this aphid. Despite a wide range of topics, the publications collected in the SCOPUS and Web of Science databases are not sufficient sources of in-formation about this species. The available data must be supple-mented and updated using modern research methods. The experi-ments and observations should consider the direct and indirect relationships of T. salignus with other organisms and the environment.
Źródło:
Polish Journal of Agronomy; 2020, 43; 113-124
2081-2787
Pojawia się w:
Polish Journal of Agronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Activity of azadirachtin relating to Pieris brassicae and Apanteles glomeratus
Autorzy:
Wawrzyniak, M
Wrzesinska, D.
Powiązania:
https://bibliotekanauki.pl/articles/65381.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pest
cabbage plant
azadirachtin
Apanteles glomeratus
mite
insect
Azadirachta indica
Pieris brassicae
Opis:
Azadirachtin is the most active substance separated from Azadirachta indica. lt acts destructively on numerous species of insects and mites. The aim of the presented investigations was to determine the effect of azadirachtin on one of the most dangerous pests of cabbage plants, Pieris brassicae, and on its natural enemy, Apanteles glomeratus. The results of the field observations did not show any repellent effect of azadirachtin relating to laying their eggs cabbage butterflies. However, a significant effect of the azadirachtin solution on reduction the number of cabbage butterfly caterpillars (it was more distinctly marked in respect to young larva stages) as well as on limited feeding by caterpillars. No negative influence of azadirachtin on a parasite of Pieris brassicae caterpillars, Apanteles glomeratus was distinctly shown.
Azadirachtyna jest najbardziej aktywną substancją wyizolowaną z Azadirachta indica. Działa szkodliwie na liczne gatunki owadów i roztoczy. Celem przedstawionych doświadczeń było określenie jej wpływu na jednego z najgroźniejszych szkodników roślin kapustnych bielinka kapustnika (Pieris brassicae) oraz na jego wroga naturalnego baryłkarza bieliniaka (Apanteles glomeratus). Wyniki przeprowadzonych obserwacji polowych nie wykazały repelentnego działania azadirachtyny w stosunku do składających jaja motyli bielinka. Stwierdzono natomiast znaczący wpływ preparatu na redukcję liczby gąsienic bielinka kapustnika (wyraźniej zaznacza się to w odniesieniu do młodszych stadiów larwalnych) oraz na hamowanie pobierania pokarmu przez gąsienice. Nie wykazano wyraźnie negatywnego wpływu azadirachtyny na pasożyta gąsienic bielinka – baryłkarza bieliniaka.
Źródło:
Journal of Plant Protection Research; 2000, 40, 2
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:
System for warning and control of leaf mining flies and leaf beetles on cereal crops
Autorzy:
Walczak, F
Powiązania:
https://bibliotekanauki.pl/articles/65294.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pest
Agromyzidae
crop damage
control
warning
larva
leaf mining fly
cereal crop
trapped insect
Opis:
Many species of leaf mining flies feed on cereal crops. Cereal crop plantations with high level of the pest infestation need to be treated with insecticides. The yellow tables covered with glue were used for trapping the pests. The leaf mining flies warning system can provide the information about date of treatment based on counting the trapped imagines of the pest and observation of leaf beetle appearance and its development. The following species of leaf mining flies are the most common in Poland: Phytomyza nigra Mg., Agromyza ambigua Fll., Ceroclontha pygmaea Mg., Agromyza mobilis Mg.
Wzrost liczebności i szkodliwości miniarek w uprawach zbóż w Polsce stwierdzono na początku lat dziewięćdziesiątych. Larwy miniarek żerują w tkance miękiszowej liści, w wyniku czego powstają charakterystyczne uszkodzenia (miny). W niektórych rejonach kraju lokalnie owady te mogą występować liczniej i przyczyniać się do znacznego ograniczenia powierzchni asymilacyjnej liści (głównie flagowych i podflagowych), co w konsekwencji ma wpływ na wartość i wielkość plonu. Celem pracy było opracowanie wskazówek metodycznych przy podejmowaniu decyzji o chemicznym zwalczaniu na zbożach miniarek równocześnie ze skrzypionkami. W wyniku przeprowadzonych badań stwierdzono, że dobrą praktyczną metodą sygnalizacji chemicznego zwalczania tych szkodników jest kontrola liczebności form dorosłych miniarek, odławianych na tablicach chwytnych w kolorze żółtym, przy równoległej obserwacji pojawu i rozwoju skrzypionek.
Źródło:
Journal of Plant Protection Research; 1998, 38, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Field evaluation of two aqueous plant extracts on water melon Citrullus lanatus (Thumb) insect pests in Northern Guinea savannah of Nigeria
Autorzy:
Degri, M.M.
Sharah, H.S.
Powiązania:
https://bibliotekanauki.pl/articles/11351.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
field evaluation
aquatic plant
plant extract
watermelon
Citrullus lanatus
insect
pest
Northern Guinea
savannah
Nigeria
Opis:
Leaf beetles and fruitfly infestation greatly limits water melon (Citrullus lanatus) production throughout the tropics. The efficacy of aqueous plant extracts applied at 5 % w/v concentration of two botanicals (neems seed oil and garlic bulb) and 1.5 melt of one synthetic insecticide (karate 2.5 EC) against their infestation were evaluated. The effects of these treatments including control on the number of the insects, number of leaves, vines, length of vines, number of fruits, fruit weight, fruit damaged and undamaged were assessed during 2012 and 2013 cropping seasons in Lawanti, Gombe state, Northern Guinea Savannah region of Nigeria. Result of the study showed that neem seed oil and garlic bulb treatments at 5 % w/v were effective against the leaf beetles and water melon fruitfly as the synthetic insecticide karate 2.5 EC in managing the water melon insect pests. Karate 2.5 EC significantly reduced the infestation of the insect pests of water melon and increased number of leaves, vines, length of vines, number of fruits, fruit weight and number of undamaged fruits/plot followed closely by neem seed oil (A. indica) and garlic bulb (A. sativum) extracts. Water melon a growth and fruit yields were appreciably improved in these treatment while untreated control water melon crops had more leafs beetles and fruitfly infestations, poor plant growth and lower fruit yields. Both botanicals can thus serve as alternatives to synthetic insecticides for managing water melon leaf beetles and fruitfly attack.
Źródło:
International Letters of Natural Sciences; 2014, 09
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Susceptibility of Hypsipyla grandella (Lepidoptera: Pyralidae) to Bacillus thuringiensis strains
Autorzy:
Castro, M.T.
Montalvao, S.C.L.
Monnerat, R.G.
Powiązania:
https://bibliotekanauki.pl/articles/66443.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Hypsipyla grandella
Lepidoptera
Pyralidae
susceptibility
Bacillus thuringiensis
pest
Meliaceae
insect attack
mahogany
Swietenia macrophylla
cedar
Cedrella odorata
andiroba
Carapa guianensis
branch
shoot
leaf
fruit
bark
root
Brazil
Opis:
The use of Bacillus thuringiensis (Bt) to control insect pests has already been established in various agronomic and forest crops. It is a bacterium that does not pollute the environment, is safe for mammals and vertebrates, lacks toxicity to plants and specifically targets insects. To date in-depth studies have not been conducted about the use of Bt to control the main pest of mahogany (Swietenia macrophylla King) and other Meliaceae species, the Hypsipyla grandella Zeller (Lepidoptera: Pyralidae). Therefore, this study aimed to test the pathogenicity of Bt strains on H. grandella caterpillars, as well to determine the lethal concentration required to kill 50% of the population (LC50) of the most promising strains. Ten strains of Bt toxic to lepidopteran proven in previous trials were used and these were incorporated into a natural diet with mahogany seeds to check their mortality. The LC50 of the top five strains was determined. The results indicate that H. grandella is highly susceptible to Bt toxins and the S1905 strain is highly toxic. Therefore, the use of Bt strains may be a tool to be incorporated into the integrated management of this important pest.
Źródło:
Journal of Plant Protection Research; 2018, 58, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
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 1-8 z 8

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