Life Sciences and Agriculture

Journal of Plant Protection Research

Content

Journal of Plant Protection Research | 2001 | No 2

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Abstract

The aim of the experiments was to evaluate the effect of Sekator 6,25 WG used for broad leaved weeds control in winter and spring cereals. Sekator 6.25 WG herbicide is composed of iodosulfuron 1.25%, amidosulfuron 5% and mephenpyr diethyl 12.5%. The field trials were conducted over the period 1997-1999 at experimental station, which belonged to the Institute of Plant Protection. The results showed that Sekator 6,25 WG effectively controled Ga/ium aparine, Anthemis arvensis, Myosotis arvensis, Chenopodium album, Polygonum sp., Sinapis arvensis, Stel/aria media, Capsela bursa-pastoris, Thlaspi arvense and Lamium purpureum. The obtained yield of winter and spring cereals was increased by Sekator 6,25 WG application. Sekator 6,25 WG herbicide used in all experiments was safe for both winter and spring cereals.
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Authors and Affiliations

Kazimierz Adamczewski
Krystyna Miklaszewska
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Abstract

This work presents some properties of Sunn-hemp mosaic tobamovirus (SHMV) orginally isolated from bean plants. Virus infected host range and induced symptoms that were typical for SHMV Following plant species distinguished SHMV from tobacco mosaic tobamovirus (TMVJ: Phaseolus vulgaris, Pisum sativum, Lupinus albus and Lycopersicon esculentum. In immunobloning the serum against SHMV did not react with TMV and Tomato mosaic tobamovirus (ToMV). The electrophoretical patterns of whole virions and capsid proteins were characteristic for SHMV and different from that of TMV and ToM.
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Authors and Affiliations

Henryk Pospieszny
Magdalena Palczewska
Natasza Borodynko
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Abstract

Two experimental methods were used in the study. The aim of the first one was focused on a detection of Arabis mosaic nepovirus (ArMY) particles and tubules with viruses in extracts obtained from crushed leaves of bean. Second one consisted on investigation of ultrastructural changes occwing in the bean leaf tissues with symptoms caused by ArMY. Characteristic membranous inclusions in the cytoplasm were observed and described. ArMY occured either as irregularly scattered particles in the cytoplasm, crystal-like aggregates or semiconcentric and concentric layers. Not numerous but sometimes very long tubules with viruses were mainly observed near the cell wall. Protrusion of the cell wall into the protoplast very often containing viruses in the plasmodesmata were observed many times. Plasmalemmasomes were frequently situated near the cell wall.
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Authors and Affiliations

Lidia Zielińska
Henryk Pospieszny
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Abstract

The purpose of the studies carried out in the years 1996-1998 was to establish the composition of bacteria and fungi communities in the potato rhizosphere and non-rhizosphere soil. Besides, in the examined samples the studies established the proportion of bacteria and fungi antagonistic towards soilbome pathogens. The microbiological analysis of 1 g of dry weight of soil coming from the rhizosphere of potato revealed from 3.96 x 10' to 7 .26 x 10 6 bacteria colonies and from 51.38 x 103 to 69.96 x 103 fungi colonies. In the case of nonrhizosphere soil of 1 g of dry weight of soil revealed from 3.50 x 10' to 4.75 x 106 bacteria colonies and from 16.16 x 103 to 34.1 0 x 103 fungi colonies. Moreover, potato cultivation had a positive effect on the increase of numbers of antagonistic bacteria (Bacillus spp. and Pseudomonas spp.) and fungi (Gliocladium spp., Penicillium spp., Trichoderma spp.). A larger number of the communities of bacteria and fungi, including antagonistic ones, in the root area of potato, indicates considerable biological activity, which contributes to a better phytosanitary condition of the soil.
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Authors and Affiliations

Danuta Pięta
Elżbieta Patkowska
Alina Pastucha
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Abstract

The paper present results from the studies carried out in the years 1999-2000 on the effectiveness of seed dressing of spring barley with the insecticide Gaucho 350 FS (a.i. irnidachloprid) to control frit flies, gout flies, aphids and thrips in piedmont conditions.
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Authors and Affiliations

Franciszek Lisowicz
Zdzisław Kaniuczak
Marek Kolb
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Abstract

Phoma exigua var. inoxydabilis var. nov. predominated among fungal isolates obtained from diseased stem runners and leaves of periwinkle ( Vinca minor). The growth of the fungus was observed at temperature ranges from 7.5 to 30°C with optimum at 25°C. Abundant formation of picnidia was noticed mainly on malt extract agar at temp. I 5-25°C. On potato-dextrose agar picnidia were observed 3-5 days later. On inoculated leaves of periwinkle, development of necrosis was observed at temperature I0-25°C with optimum 20°C. On field grown periwinkle the first necrosis on the base of stem runners was observed 2 weeks after inoculation and during the next I O weeks discoloration of tissues occurred on about 1/2 of their length.
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Authors and Affiliations

Leszek B. Orlikowski
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Abstract

Piesma quadratum is the only vector of beet leaf curl - virosis affecting sugar beet. The sugar content of beets infected by beet leaf curl is reduced by an average of 9% and the root weight is decreased by an average of 58.4%. P quadratum appeared in Poland in the beginning of this century after migration from the territory of Germany. This bug has one generation a year. Its occurrence is characterised by 2-3-years-long gradations in periods of every 9-11 years. Chemical control of beet leaf bug caused disturbance of this rhythm. Recent gradations of the pest occurred every 17 years.
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Authors and Affiliations

Alicja Korcz
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Abstract

Investigations on the occurrence of Barley stripe mosaic virus (BSMV, Hordeivirus) in Poland were performed by testing seeds of 22 barley cultivars. BSMV was detected in seeds of winter barley cv. Tiffany and of spring barley cvs. Scarlett and Stratu s. The virus presence was revealed by ELISA test and then confirm ed by electron microscopy. Preliminary data on the rate of seed transmission of BSMV in cvs. Scarlett and Stratus are presented.
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Authors and Affiliations

Małgorzata Jeżewska
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Abstract

The influence of oilseed rape glucosinolates on the grown in vitro pathogenic fungi was studied. Two pathogenic to oilseed rape fungi species: Fusarium roseum and Rhizoctonia so/ani were taken into consideration. It was observed that glucosinolates added to the medium limited the growth of both tested fungi to some extent, especially when higher concentrations of glucosinolates was supplied.
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Authors and Affiliations

Danuta Waligóra
Marek Korbas
Dorota Remlein-Starosta
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Abstract

Investigations were carried out in 1996-1998 on experimental plots sown with different oat cultivars and lines. Symptoms of the fusarium panicle blight developed on 0.5-15% of oat plants. Results of this studies showed that fusarium blight of oat panicles is widespraed in Lublin region. Fusarium avenaceum and F. poae proved to be the cause of the disease. Also F. culmorum, F. crookwellense, F. equiseti, F. oxysporum, F. sporotrichioides were isolated from infected panicles.
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Authors and Affiliations

Elżbieta Mielniczuk
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Abstract

The purpose of the studies conducted in the years 1996-1998 was to determine the quantitative and qualitative composition of bacterial and fungal communities in rhizosphere of soybean cultivated in monoculture and non-rhizosphere soil. Besides, the proportion of bacteria and fungi, which were distinguished by their antagonistic effect towards soil-borne pathogens was established. A microbiological analysis of lg of dry weight of soil from rhizosphere of soybean resulted in 3.21 x I ()6 to 8.70 x 106 bacterial colonies and from 70.51 x I 03 to 123.74 x 103 fungal colonies. In the case of non-rhizosphere soil, 3.50 x 106 to 4.75 x 10" bacterial colonies and 16.16 x 10' to 51.38 x 10' fungal colonies were obtained. Besides, soybean cultivation in monoculture had a negative effect on the number of antagonistic isolates of bacteria (Bacillus spp., Pseudomonas spp.) and fungi (Gliocladium spp., Penicillium spp., Trichoderma spp.). Smaller numbers of antagonistic bacteria and fungi in rhizosphere soil of soybean cultivated in monoculture as compared to non-rhizosphere soil, can prove little biological activity, which results in a worse phytosanitaty condition of the soil.
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Authors and Affiliations

Elżbieta Patkowska
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Abstract

N.W. Schaad, J.B. Jones, W. Chun (eds.) 2000. Laboratory Guide for Identification of Plant Pathogenic Bacteria. Third Edition. APS Press, The American Phytopathological Society, St. Paul, Minnesota. ISBN 0-89054-263-5.
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Authors and Affiliations

Jerzy J. Lipa

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