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Wyszukujesz frazę "biological agent" wg kryterium: Temat


Tytuł:
Pegomya nigritarsis Ztt. [Diptera, Anthomyiidae] as an interesting option for biological control of Rumex confertus Willd
Autorzy:
Piesik, D
Powiązania:
https://bibliotekanauki.pl/articles/65479.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
weed
biological control
plant growth
pest weed
Rumex confertus
Pegomya nigritarsis
biological agent
Opis:
There is currently a very favorable climate for biological control of pest weeds. Moreover, biological control plays a significant role in the Integrated Plant Protection Management. Traditional methods of weed control, such as cultivation and the use of herbicides are not practical or desirable for some stands of weeds, and biological control has become an attractive strategy for control of pest weeds. Control of Rumex confertus Willd. by natural enemies that reduce its density is the good example of utilizing biological control on the European and worldwide scale. The aim of the conducted studies was to evaluate the dynamic of population of Pegomya nigritarsis Ztt. (Diptera, Anthomyiidae) on Rumex confertus Willd. and to determine the impact of pest’s injuries on the growth of a plant.
Intensyfikacja produkcji roślinnej zmusza do poszukiwania coraz to nowszych sposobów walki z agrofagami. Metody biologiczne są znane od wielu lat. Cały czas jednak odkrywa się nowe owady mogące odegrać pewną rolę w redukowaniu zachwaszczenia. Introdukcja nowych organizmów nie ma na celu wyeliminowania z ochrony roślin metod chemicznych. Jednak środki chemiczne są często mało selektywne, skażają środowisko oraz szybko stają się nieskuteczne, ponieważ organizmy nabywają odporności. Pegomya nigriarsis Ztt. to gatunek mogący odegrać pewną rolę w biologicznej walce z tym chwastem. Larwy żerując w liściach silnie redukują powierzchnię asymilacyjną chwastu. Tak uszkodzone rośliny zasychają.
Źródło:
Journal of Plant Protection Research; 2002, 42, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The occurrence of Hypera rumicis L. [Col., Curculionidae] on Rumex confertus Willd. as an interesting option for biological weed population control
Autorzy:
Piesik, D
Powiązania:
https://bibliotekanauki.pl/articles/65505.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
weed
biological control
weed population
Hypera rumicis
Curculionidae
population control
Rumex confertus
occurrence
biological agent
Opis:
Biological methods of weed control are alternative to chemical treatments. Biological techniques are used where no possibility for chemical spraying occurs. Rumex confertus Willd. is an example of a plant-eater which is potentially more important than chemical compounds. The objective of the study was to evaluate population dynamics and the development of Hypera rumicis L. (Coleoptera, Cucurlionidae) on Rumex confertus Willd. as well as to determine effects of the injuries on growth of a plant.
Chwasty są organizmami szkodliwymi, związanymi z działalnością człowieka, zatem istnieje potrzeba walki z nimi. Środki chemiczne najczęściej stosowane do walki z chwastami są często mało selektywne, skażają środowisko oraz szybko stają się nieskuteczne, ponieważ organizmy nabywają odporności. Metody biologiczne wydają się pewnym rozwiązaniem tego problemu. Spotkały się one ze szczególnym zainteresowaniem badaczy w odniesieniu do roślin zasiedlających tereny przyrzeczne. Hypera rumicis L. to gatunek mogący odegrać pewną rolę w biologicznej walce z tym chwastem, ze względu na niszczenie części generatywnej rośliny. Badania pokazały, że owad ten może być potencjalnym regulatorem populacji zachwaszczenia spowodowanego przez szczaw omszony.
Źródło:
Journal of Plant Protection Research; 2001, 41, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unconventional alternatives for control of tomato root rot caused by Rhizoctonia solani under greenhouse conditions
Autorzy:
Hamza, A.
Mohamed, A.
Derbalah, A.
Powiązania:
https://bibliotekanauki.pl/articles/66331.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biological agent
control
tomato
root rot
Rhizoctonia solani
greenhouse condition
plant oil
nanoparticle
Opis:
This study was done to assess the antifungal effect of some biocontrol agents effective microorganisms (EMs1), Pseudomonas fluorescences, and Bacillus pumilus, titanium dioxide (TiO2) nanoparticles, black cumin and wheat germ oils as well as the recommended fungicide (flutolanil) against root rot of tomato. Moreover, gas chromatography-mass spectrometry (GC-MS) examination was completed to identify the bioactive compounds in plant oils (dark cumin and wheat germ). Also the impact of these medicines on some biochemical and growth parameters of tomato was examined. Flutolanil was the best treatment followed by dark cumin, TiO2, EMs1, Pseudomonas fluorescens, Bacillus pumilus and wheat germ oil, individually in both test seasons. The outcomes demonstrated a marked increase in each biochemical character (chlorophyll substance, peroxidase and polyphenoloxidase) and plant development (height and fresh and dry weight) under all the tried treatments in comparison to the controls.
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:
Isolation and evaluation of biocontrol agents in controlling anthracnose disease of mango in Thailand
Autorzy:
Rungjindamai, N.
Powiązania:
https://bibliotekanauki.pl/articles/66340.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
isolation
evaluation
biological control
biological agent
controlling
anthracnose
Bacillus
plant disease
Colletotrichum gloeosporioides
epiphyte
mango
Thailand
Opis:
The agricultural based economy is a core business in Thailand and food export is one of the main sources of income for the Thai population. However, pesticides are overused and misused. As a result there is an urgent need to reduce the use of synthetic chemicals. Biological control offers an alternative to the use of pesticides. Mango (Mangifera indica L.) is widely planted in Thailand and is one of the major cash crops for international export. However, mango suffers from various diseases especially anthracnose, a fungal disease caused by Colletotrichum gloeosporioides. One hundred and twelve isolates of epiphytic microbes were isolated from healthy leaves and fruits of mangoes; this included 93 and 19 isolates of epiphytic bacteria and yeasts, respectively. They were screened for bioactivity against a pathogenic strain of C. gloeosporioides isolated from diseased mangoes using a dual culture technique. Out of 112 isolates, eight isolates exhibited at least 60% inhibition. These isolates were further screened for their inhibition on mango using fruit inoculation. Two isolates reduced the lesion sizes caused by C. gloeosporioides compared to control treatment. These two isolates, based on phenotypical and biochemical tests, were identified as Bacillus sp. MB61 and Bacillus sp. LB72.
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:
The occurrence of Gastroidea viridula Deg. and Gastroidea polygoni L. [Col. Chrysomelidae] on Rumex confertus Willd. as biological representatives of weed population control
Autorzy:
Piesik, D
Powiązania:
https://bibliotekanauki.pl/articles/65315.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Polygonaceae
mossy sorrel
biological control
weed population
Chrysomelidae
Rumex confertus
Gastroidea viridula
occurrence
weed control
Gastroidea polygoni
biological agent
Opis:
Weeds are harmful organisms connected with human activities; therefore there is a need for their control. Human development and mobility have caused on purpose or purely incidental introduction of plants, exotic very often, to new sites and ecosystems. A dominating method of weed control is applying chemicals. However, chemical compounds are often of low selectivity, they also contaminate the environment and become ineffective quickly because of acquired resistance of treated organisms. The control of Rumex confertus Willd. and other weeds of the genus Rumex spp. is often not possible because of economical reasons. Large areas abundant in sorrel populations would require a large sum of money invested in expensive chemical control. Biological methods of weed control look far more promising solution to this problem. Rumex confertus Willd. is a plant corresponding to criteria to qualify it as an object for biological regulation. The objective of the study was to evaluate dynamic of population and development of the insects of the genera Gastroidea spp. (Gastroidea viridula Deg. and Gastroidea polygoni L.) occurring on Rumex confertus Willd.
Chwasty są szkodliwymi organizmami, których nie można lekceważyć. Dominującym sposobem walki z nimi są metody chemiczne. Zbyt duże stosowanie chemikaliów powoduje jednak nierzadko skażenie środowiska, a także uaktywnianie się agrofagów dotąd nieszkodliwych. Pewną alternatywą w związku z tym wydaje się być wykorzystywanie do walki z niektórymi chwastami owadów. Jednym z takich chwastów, które mogą być poddane biologicznemu zwalczaniu jest Rumex confertus Willd.
Źródło:
Journal of Plant Protection Research; 2000, 40, 3-4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Basic substances under EC 1107/2009 phytochemical regulation: experience with non-biocide and food products as biorationals
Autorzy:
Marchand, P.A.
Powiązania:
https://bibliotekanauki.pl/articles/66289.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
basic substance
2009-1107-EC Directive
phytochemical regulation
experience
non-biocide
food product
biorational control
biological control
biological agent
plant protection
Opis:
Basic Substances are a newly effective category of Plant Protection Product under EC Regulation No 1107/2009. The first approved application of Equisetum arvense L. opened Part C of Implementing Regulation (EU) No 540/2011, which lists the basic substance approved. Although E. arvense was described as a fungicide extract, subsequent applications like chitosan were related to non-biocide molecules. Consequently, plant protection product data were collected from research on alternative or traditional crop protection methods. They are notably issued or derived from foodstuffs (plants, plant by-products, plant derived products, substances and derived substances from animal origin). Applications are currently submitted by our Institute, under evaluation at different stages of the approval process or already approved. Remarkably, this Basic Substance category under pesticide EU Regulation was surprisingly designed for these non-biocidal plant protection products. In fact, components described as the “active substance” of most of the actual applications are food products like sugars and lecithin. Basic Substance applications for these foodstuffs are therefore a straightforward way of easily gaining approval for them. Here we describe the approval context and detail the agricultural uses of theses food products as Biological Control Agents (BCAs) or biorationals for crop protection. From all deposited or approved Basic Substance Application (BSA), a proof has been provided that non-biocide and food products via physical barrier or lure effects may be effective plant protection products with an acceptable low profile of concern for public and agricultural safety.
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:
Biological agents as occupational hazards - selected issues
Autorzy:
Dutkiewicz, J.
Cisak, E.
Sroka, J.
Wojcik-Fatla, A.
Zajac, V.
Powiązania:
https://bibliotekanauki.pl/articles/50867.pdf
Data publikacji:
2011
Wydawca:
Instytut Medycyny Wsi
Tematy:
biological agent
occupational hazard
health hazard
bioaerosol
allergy
human disease
toxin
virus
bacteria
fungi
infectious disease
zoonosis
tick-borne disease
Źródło:
Annals of Agricultural and Environmental Medicine; 2011, 18, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlation between biological agents and levels of heavy metals in municipal sewage sludge
Autorzy:
Bozek, U
Klapec, T.
Powiązania:
https://bibliotekanauki.pl/articles/49870.pdf
Data publikacji:
2008
Wydawca:
Instytut Medycyny Wsi
Tematy:
biological agent
Ascaris
helminth
Trichuris
cadmium
zinc
lead
Toxocara
Salmonella
nickel
copper
egg
municipal sewage sludge
chromium
sewage sludge
heavy metal
Źródło:
Annals of Agricultural and Environmental Medicine; 2008, 15, 2
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prospective proecological insecticides among the naturally occurring peptides
Autorzy:
Sobotka, W.
Konopinska, D.
Powiązania:
https://bibliotekanauki.pl/articles/836235.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
proecological insecticide
public health
alga
peptide
bacteria
fungi
biological control agent
insecticide
plant
crop protection
Źródło:
Annals of Parasitology; 1994, 40, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular identification of Trichoderma strains collected to develop plant growth-promoting and biocontrol agents
Autorzy:
Oskiera, M.
Szczech, M.
Bartoszewski, G.
Powiązania:
https://bibliotekanauki.pl/articles/1976.pdf
Data publikacji:
2015
Wydawca:
Instytut Ogrodnictwa
Tematy:
Trichoderma
strain
molecular identification
biological control agent
multilocus sequence typing
phylogenesis
species identification
DNA isolation
Źródło:
Journal of Horticultural Research; 2015, 23, 1
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prospective proecological insecticides among the naturally occurring peptides
Autorzy:
Sobotka, W.
Konopińska, D.
Powiązania:
https://bibliotekanauki.pl/articles/2151480.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
proecological insecticide
public health
alga
peptide
bacteria
fungi
biological control agent
insecticide
plant
crop protection
Źródło:
Wiadomości Parazytologiczne; 1994, 40, 3; 314-316
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Śmiertelność nicieni w obiegu hydraulicznym opryskiwacza
Mortality of nematodes in hydraulic cyrculation of sprayer
Autorzy:
Chojnacki, J.
Powiązania:
https://bibliotekanauki.pl/articles/289554.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
opryskiwacz
biologiczny środek ochrony roślin
nicienie
sprayer
biological pest control agent
nematodes
Opis:
Przeprowadzono badania nad zmianami śmiertelności względnej nicieni Steinernema feltiae - biologicznego środka ochrony roślin, pod wpływem wielokrotnego przepompowywania ich w instalacji opryskiwacza. Wartości ciśnienia cieczy z nicieniami przyjęto równe 0,6 i 1,2 MPa. Maksymalna ilość cykli całkowitego przepompowania cieczy znajdującej się w instalacji wyniosła 170. Stwierdzono wzrost śmiertelności nicieni wraz ze wzrostem ilości cykli.
Mortality of nematodes in hydraulic cyrculation of sprayer The research which was carried out dealt with the turns of relative mortality of nematodes Steinernema feltiae - biological pest control means, by multiple pumping them in the installation of the sprayer. The values of the pressure of liquid in which nematode were contained equalled 0,6 and 1,2 MPa. The value of maximum quantity of cycles - periods of time in which liquid was totally pumped in the installation, was 170. It was observed that the increase of cycles brings about the increase of mortality of nematodes.
Źródło:
Inżynieria Rolnicza; 2007, R. 11, nr 3 (91), 3 (91); 45-50
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of biological and chemical control agents on the health status of the very early potato cultivar Rosara
Autorzy:
Cwalina-Ambroziak, B.
Damszel, M.M.
Glosek-Sobieraj, M.
Powiązania:
https://bibliotekanauki.pl/articles/65899.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biological control agent
chemical control agent
health status
early potato
plant cultivar
Rosara cultivar
plant disease
fungi
fungicide
mycorrhizal inoculum
Polyversum
Opis:
The external appearance and quality of table potatoes are determined, among other factors, by the health status of the plants during the growing season. Chemical control methods are often combined with biocontrol agents to effectively fight potato pathogens. Potatoes of the very early cultivar Rosara were grown in experimental plots. The plots were located in Tomaszkowo (NE Poland, 2007–2009). The experiment involved the following treatments: 1) biological control − mycorrhizal Glomus spp. inoculum was applied to the roots, − tubers were dressed and plants were sprayed with Polyversum three times during the growing season, 2) chemical control – at two-week intervals, plants were sprayed with the following fungicides: Infinito 687.5 SC and Tanos 50 WG, Valbon 72 WG and Tanos 50 WG. In the control treatment, potato plants were not protected against pathogens. During the growing season, the severity of late blight and early blight was evaluated on a nine-point scale. The composition of fungal communities colonising potato stems was analysed. The fungistatic properties of the fungicides used in the field experiment were evaluated in an in vitro test. The symptoms of infections caused by Phytophthora infestans and Alternaria spp. were significantly reduced in the treatment which used the integrated chemical and biological control. The least diverse fungal community was isolated from fungicide-treated plants. In the in vitro test, fungicides at all analysed concentrations inhibited the linear mycelial growth of selected pathogens.
Źródło:
Journal of Plant Protection Research; 2015, 55, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exposure, symptoms and airway inflammation among sewage workers
Autorzy:
Heldal, K K
Madso, L.
Huser, P.O.
Eduard, W.
Powiązania:
https://bibliotekanauki.pl/articles/51884.pdf
Data publikacji:
2010
Wydawca:
Instytut Medycyny Wsi
Tematy:
environmental exposure
sewage
worker
worker exposure
biological agent
toxic gas
microbial degradation
health risk
risk factor
sewage dust
endotoxin
lung function
nitric oxide
exposure-response relationship
Źródło:
Annals of Agricultural and Environmental Medicine; 2010, 17, 2; 263-268
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Human exposure to airborne fungi from genera used as biocontrol agents in plant production
Autorzy:
Madsen, A M
Hansen, V.M.
Meyling, N.V.
Eilenberg, J.
Powiązania:
https://bibliotekanauki.pl/articles/49861.pdf
Data publikacji:
2007
Wydawca:
Instytut Medycyny Wsi
Tematy:
Trichoderma
occupational health
indoor air
airborne fungi
Ulocladium
biological control agent
plant production
Verticillium
allergy
Lecanicillium
human exposure
Beauveria
Paecilomyces
Opis:
The fungi Trichoderma harzianum, T. polysporum, T. viride, Paeciliomyces fumosoroseus, P. lilacinus, Verticillium/lecanicillium lecanii, Ulocladium oudemansii, U. atrum and Beauveria bassiana are used or considered to be used for biocontrol of pests and plant diseases. Human exposure to these fungi in environments where they may naturally occur or are used as biocontrol agents has not been directly investigated to date. This review aims to provide an overview of the current knowledge of human exposure to fungi from the relevant genera. The subject of fungal taxonomy due to the rapid development of this issue is also discussed. B. bassiana, V. lecanii, T. harzianum, T. polysporum, P. lilacinus and U. oudemansii were infrequently present in the air and thus people in general seem to be seldom exposed to these fungi. However, when V. lecanii was present, high concentrations were measured. Fungi from the genera Trichoderma, Paecilomyces and Ulocladium were rarely identifi ed to the species level and sometimes high concentrations were reported. T. viride and U. atrum were detected frequently in different environments and sometimes with a high frequency of presence in samples. Thus, people seem to be frequently exposed to these fungi. Sequence data have led to recent revisions of fungal taxonomy, and in future studies it is important to specify the taxonomy used for identifi cation, thus making comparisons possible.
Źródło:
Annals of Agricultural and Environmental Medicine; 2007, 14, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł

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