Life Sciences and Agriculture

Journal of Plant Protection Research

Content

Journal of Plant Protection Research | 2001 | No 1

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Abstract

Disappearance of chlorothalonil, dichlofluanid, vinclozolin and carbendazim, as active ingredients of agrochemicals commonly used for the protection of greenhouse vegetables against fungal diseases, was studied comparatively. It was found that initial residues of chlorothalonil and dichlofluanid dropped by halfwithin 4 and 2 weeks after treatment, respectively, while the deposits of vinclozolin and carbendazim were the most persistent and after 5 weeks still constituted 50% of their initial levels. Therefore, the obtained results indicated that iprodione, procymidone and vinclozolin should ensure the longest effective protection of greenhouse tomatoes while chlorothalonil, and especially dichlofluanid, for the shortest.
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Authors and Affiliations

Stanisław Sadło
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Abstract

Studies carried out for many years in the experimental field in Winna Góra refer to the biocenotic regulation of aphids in agricultural cultivations by aphidophagous Diptera of Syrphidae. Experiments were carried out in conditions of an agricultural lanscape differentiated by the presence of field afforestation.
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Authors and Affiliations

Aleksandra Grabarkiewicz
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Abstract

The research on the occurrence ofCurculionoidea carried out in 1990-1995, in south-eastern Poland showed thatSitona hu mera/is Steph. was the most numerous species. Its participation among all the collected Curculionoidea was 69.4%. Other species occurring on alfalfa crops were: Hypera postica (Gyll.)- 7.7%, Si tona linea/us (L.)-5.0%, Sitona hispidulus (Fabr.)- 4.7% and Apion tenue Kirby 4.4% of the entire entomological material. In the spring, the highest numbers of adult Curculionoidea appeared in mid May and in the second half of September.
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Authors and Affiliations

Marta Pisarek
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Abstract

The numbers of Curculionoidea showed a growing tendency during the initial four years of alfalfa crop use for green fodder, but in the subsequent years they decreased significantly. The number of species increased with the plantation age.
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Authors and Affiliations

Marta Pisarek
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Abstract

Sitona hunieralis Steph. has one generation per year. Adults survive through the winter. Full life cycle from egg to adult lasts 54 days on average, including about I O days for embryo, 30 days for larval and 14 days for pupa stage.
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Authors and Affiliations

Marta Pisarek
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Abstract

Adults of Si tona humeralis Steph. damage leaves of alfalfa, causing bay-shaped leaf holes characteristic for the Sitona spp. The larvae damage root nodules, taproots and open the infection paths for pathogenic fungi which occur in soil and on the root surface which results in the withering of plants.
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Authors and Affiliations

Marta Pisarek
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Abstract

The quantity and quality of spears from asparagus plants infected with Asparagus virus 2 was lower in comparison to healthy plants. The total number of spears was decreased in 16% and mass of spears in 24.7%. Asparagus virus 2 reduced the number of marketable spears in 31.9%, and increased the number of unmarketable spears in 20.2%. The green mass of stem brushes of infected plants was reduced in 19.4% in field conditions and in 20% in seedlings growing in a greenhouse.
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Authors and Affiliations

Zofia Fiedorow
Agnieszka Szelka
Anna Gąsiorowska
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Abstract

Experimental cucumber and tomato plants were cultivated under glasshouse conditions with or without PGPR. Young plants were infested with spider mites (T urticae - cucumber and T cinnabarinus - tomato). Leaves were analysed for protein and amino acid concentration. In infested leaves of the cucumber cultivar, susceptible to spider mites (Corona), an important decrease in protein content occurred in both bacterized and nonbacterized plants. Amino acid content was higher in mite infested leaves and the presence of PGPR did not influence this phenomenon. The content of proteins was also studied in the leaves of the less susceptible cucumber cultivar (Aramis). Spider mite feeding caused a small decrease in their concentration. The presence of bacteria in the root system caused an increase of soluble proteins in the leaves. In infested leaves of the highly susceptible tomato cultivar (Rornatos), cultivated without bacteria, an evident increase of amino acid content was found opposite to plants with PGPR. The protein concentration was also increased in injured leaves of this cultivar but the presence of bacteria in the root system of mite infested plants caused a decrease of these compounds in their leaves. Injured foliage of the less susceptible tomato cultivar (Sionka) had a lower protein concentration in bacterised plants as compared to those nonbacterised and both controls.
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Authors and Affiliations

Anna Tomczyk
Małgorzata Kiełkiewicz
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Abstract

A total of 94 pectolytic and 60 nonpectolytic Pseudomonas isolates were obtained from 250 samples of rotted vegetable specimens representing various economically important vegetables. The isolates were identified on the basis of standard biochemical tests. Pseudomonas fluorescens biovar V and II and Pseudomonas putida were the most abundant species among pectolytic isolates and Pseudomonas fluorescens biovar I among nonpectolytic ones. Only 3 Pseudomonas viridiflava isolates were identified and all of them were obtained from potato. Isolates of pectolytic phenotype were scattered among nonpectolytic ones irrespective of their taxonomical status. Isolates identified biochemically, as Pseudomonas marginalis were also present in nonpectolytic group. PCR method is unsuitable for identification and differentiation of bacteria belonging to pectolytic fluorescens Pseudomonas group due to great diversity of species. However, the results of PCR amplification of the genes encoding pectate lyase suggest that genes responsible for production of this enzyme may also be present in isolates of nonpectolytic phenotype.
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Authors and Affiliations

Lena Żołbowska
Henryk Pospieszny
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Abstract

Three Polish, four other European and three tropical isolates of the nematophagous fungus Verticillium chlamydosporium were screened for their ability to colonise the surface of barley roots, produce chlamydospores and infect eggs of Meloidogyne incognita in laboratory tests. PCR-fingerprinting of different Polish isolates and YclO was used to detect differences between isolates. Among the European isolates, the Polish isolate which came from a field fertilised with manure produced the greatest number of viable chlamydospores, the largest proportion of infected eggs of Meloidogyne incognita and the most prolific root colonisation. Among the tropical isolates, an isolate A produced the largest number of chlamydospores and an isolate B was the most prolific root coloniser and parasitised most of M. incognita eggs.
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Authors and Affiliations

Danuta Sosnowska
Tim H. Mauchline
Joanna M. Bourne
Brian R. Kerry
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Abstract

The research was conducted to evaluate the impact of sulphur compounds on the sex of Colorado potato beetle in the region of sulphur factory in Chmielów near Tarnobrzeg in 1995. The control plantations were situated in the village of Zarębki, about 30km from Chmielów. The object of the study was the average body mass of female and male specimen of the insect after full spring beetle appearance in potato plantations as well as the average body female and male mass after pupation of the larvae of the first generation and emerging from the soil. After six and twelve days of starvation, the average female and male body mass was determined. After twelve days of starvation the incident of cannibalism was noticed among the beetles of the first zone polluted by sulphur compounds.
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Authors and Affiliations

Zdzisław Przybylski
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Abstract

Mordkovich, Ya. B., Sokolov, E.A. 1999. Spravochnik - Opredelitel Karantinnykh i Drugikh Opasnykh Vrediteley Syrya, Produktov Zapasa i Posevnego Materiala [A Guide-book for Identification of Quarantine and Other Noxious Pests of Raw and Stored Plant Products and Seeds]. Kolos, Moskva, 384 pp. ISBN 5-10-003499-8.
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Authors and Affiliations

Jerzy J. Lipa
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Abstract

Perry R.N., Wright D.J. (Editors). 1998. The Physiology and Biochemistry of Free-living and Plant-parasitic Nematodes. CABI Publishing, Wallingford, 438 pp., ISBN 0851992315.
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Authors and Affiliations

Stefan Kornobis
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Abstract

Prusky D., Freeman S., Dickman M.B. (eds.). 2000. Colletotrichum: Host Specificity, Pathology and Host-Pathogen lnteraction. APS - The American Phytopathological Society, St. Paul, Minnesota, 393 pp. ISBN 0-89054-258-9.
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Authors and Affiliations

Jerzy J. Lipa
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Abstract

Ulloa M., Hahlin T.T. 2000. Illustrated Dictionary of Mycology. APS Press - The American Phytopathological Society, St. Paul, Minnesota, 448 pp. ISBN 0-89054-257-0.
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Authors and Affiliations

Jerzy J. Lipa
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Abstract

Sygonyavev E.S., Monastyrskii A.L. 1999. An Introduction in Ecological Integrated Lepidopteroid Rice Pest Management in North Vietnam (Lepidoptera: Pyralidae). Russian-Vietnamese Research and Tropical Centre. Hanoi 291 pp. (In Russian and English).
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Authors and Affiliations

Jerzy J. Lipa

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