Life Sciences and Agriculture

Journal of Plant Protection Research

Content

Journal of Plant Protection Research | 2003 | vol. 43 | No 4

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Abstract

The objective of the present study was to identify the dynamics of Alternaria blight spread on spring oilseed rape lower, middle and upper leaves and siliques, to determine the disease incidence (DI) and severity (DS) on leaves, stems, siliques and seeds under the effect of prochloraz and tebuconazole. Efficiency of the fungicides was compared in relation to their application time. Field experiments with the spring oilseed rape cv. 'Star' were conducted at the Lithuanian Institute of Agriculture during 1997-1999.
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Authors and Affiliations

Irena Brazauskiene
Egle Petraitiene
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Abstract

It was confirmed that in the north of Poland winged specimens of Myzus persicae (Sulz.) start to migrate in spring approximately over three weeks later than in the central and sou them regions. It was observed that during the 1981-1990 and 1991-2000 decades, M. persicae started its flights approximately over two weeks earlier than during the 1971-1980 decade. With this respect one may conclude that the changes are permanent. There were also changes in quantity. In some places the M. persicae share in the entire aphid fauna on potato crops was observed to have decreased as the time passed, which, as it seems, may be associated with a decrease in potato crops area in Poland. Such a correlation can also be confirmed by the fact that in the area where M. persicae share increased, the potato crops area also increased extensively.
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Authors and Affiliations

Michał Kostiw
Barbara Robak
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Abstract

The experiments were carried out on red beet (cv. Czerwona Kula) from 1997 to 2000. Four combinations differing in ground coverage by weeds were analyzed. During the whole observation period, the greatest numbers of aphids were noticed on the plots kept weed free, while the lowest numbers of aphids were found on the plots where the weeds were not removed and exceptionally, in 1997, on the plots weeded twice. Over the years of observations, the greatest numbers of larvae and adult of Coccinellidae were found on the plots kept weed free, where the bean aphids were the most numerous. Among the four species of adult coccinellid beetles found in the colonies of black bean aphids, the most dominant was Coccinella septempunctata L.
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Authors and Affiliations

Maria Pobożniak
Andrzej Wnuk
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Abstract

In the climatic conditions of Lower Silesia, Poland the European corn borer lays eggs on sweet corn during 3-5 week period between the 3rd decade of June and the 2nd decade ofAugust. The eggs are laid on leaves L1 to LS ofmain and lateral stems of the plants. Caterpillars start to hatch at the beginning ofJuly, but in 1998-2000 a massive hatching was observed only in the 2nd and in the 3rd decade ofJuly, whereas in 2001 - in the 3rd decade of this month and in the l st decade of August. Larvae are capable of migrating between plant rows on the soil surface, which was observed in 1998-2000 from the end ofJuly till the end of October. Most caterpillars migrated in the 2nd and in the 3rd decade of August and in the first days of September. The cob damage by caterpillars ranged between 31 and 46%. Delayed harvest caused a substantial increase in damage.
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Authors and Affiliations

Janusz Mazurek
ORCID: ORCID
Michał Hurej
Jacek Jackowski
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Abstract

Modern methods of raspberry protection aim at a substantial reduction of chemicals use. The investigation on potential biological control of phytophagous mites on this crop has been begun. Field studies on the occurrence, species composition, and density of populations of tetranychid mites (Tetranychidae) and phytoseiid mites (Phytoseiidae) in different areas of raspberry growing in Poland was carried out in 2000-2001. Leaf samples were collected from 71 plantations located in five of the main regions of Polish raspberry production. There were clear differences in the densities of tetranychid mite populations between regions, with raspberry spider mite Neotetranychus rubi (Trag.) being more numerous than two-spotted spider mite Tetranychus urticae (Koch.) in most except the Skierniewice region. Among the phytoseiid mites collected from raspberry leaves, eleven species were identified. Although their occurrence and species composition varied with region, Amblyseius bryophilus Karg, Euseius finlandicus (Oudemans) and Amblyseius andersoni (Chant) were the most common; each species occurred at least in three regions. Results obtained showed good prospects for the deployment of the phytoseiids in biological control of spider mites on raspberry.
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Authors and Affiliations

Dariusz Gajek
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Abstract

In the years 1999-2001, efficiency of plant protection products in control of early blight (Altemaria so/ani) was evaluated in two series of field experiment. There were examined four contact fungicides: propineb (Antracol 70 WP), chlorothalonil (Bravo 500 SC), mancozeb (Dithane M-45 80 WP) and zoxamide + mancozeb (Unikat 75 WG), and two with local penetrant mobility proparnocarb- hydrochloride + chlorothalonil (Tatoo C 750 SC) and metalaxyl-M + mancozeb (Ridomil Gold MZ 68 WP). In the series I propineb (Antracol 70 WP) showed the greatest efficacy in early blight control while in the series II mancozeb (Di thane M-45 80 WP) did.
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Authors and Affiliations

Jerzy Osowski
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Abstract

In the experiment the population dynamics as well as the development of Myzocallis caryli on five hazel cultivars were investigated. In terms of host plant resistance to Myzocallis caryli the tested cultivars displayed very similar susceptibility. The obtained results show that no significant differences were found in aphid rm. In spite of this, due to the longest prereproductive time, the lowest fecundity and the smallest number of aphids per 10 leaves, Kataloński is less suitable cultivar for the aphids from all tested hazel cultivars.
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Authors and Affiliations

Elżbieta Wojciechowicz-Żytko
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Abstract

In performed experiments, insoluble polyvinylpolypyrrolidone, PVPP as an additive to the extraction buffer was used for isolation of total nucleic acids from hop plants and grapevine in order to obtain templates useful for detection ofHLVd and HSVd by means ofRT-PCR. Addition of2% of PVPP to the original GTC buffer (Chomczynski and Sacchi, 1987) appeared to be the most favorable. Due to PVPP addition, the protocol of extraction of nucleic acids was simplified by shortening of isolation time and reduction of expenses. However, application of the simplified method for obtaining of templates that guaranteed full repeatability of test results was limited to the spring and early summer season.
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Authors and Affiliations

Mieczysław Cajza
Wojciech Folkman
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Abstract

Evaluation of palatability of 20 plant species as a food source for slugs Deroceras reticulatum (Mi.iller), Arion lusitanicus (Mabille) and Arion ruf us (Linnaeus) was performed under laboratory conditions in tests with multiple choices and without choice. Rate and degree of damage of seedlings and leaves of matured plants of herbs and winter oilseed rape were calculated. Based on conducted experiments, plant species preferred and rejected by particular slug species were defined. Plants that were preferred by all examined slug species were the following: Brassica napus, Conium maculatum and Lamium amplexicaule. Rejected plants were Polygonum nodosum and Plantago lanceolata. Slugs have showed differentiated preferences towards the remaining plant species.
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Authors and Affiliations

Jan Kozłowski
Maria Kozłowska
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Abstract

The presented studies revealed the usefulness of marjoram oil, thyme oil, juniper oil and sweet flag oil in the monitoring of the occurrence of greenhouse whitefly (Trialeurodes vaporariorum Westwood). While using the examined natural essential oils on yellow sticky traps, it was found that the number of caught insects increased significantly. In relation to the control (traps without any addition of aromatic substance), the increase amounted to: 423.13%, 422.28%, 209.91% and 139.43% respectively.
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Authors and Affiliations

Romuald Górski
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Abstract

Research was carried out in 2001-2002, in the Plant Breeding Station of Mikulice near Przeworsk. The occurrence of European corn borer (Ostrinia nubilalis Hbn.) on corn, as well as the effects of its chemical control were assessed. It was found out that in 2001, caterpillars damaged 40.5% of plants, while in 2002 - 99.3% of plants. As a result of double lambda cyhalothrin application (Karate 025 EC), high pest reduction was achieved: 91.4% in 2001 and 88.9% in 2002. Corn yields increased by 1.8 t/ha in 2001 and 4.3 r/ha in 2002 in comparison with yields in untreated fields.
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Authors and Affiliations

Franciszek Lisowicz
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Abstract

The aim of trials was to determine the efficacy of three doses of herbicides in different weather conditions. There were tested two herbicide groups: hormon type herbicides and sulfonylurea herbicides. Each of the herbicide (Aminopielik Gold 530 EW, MCPA 750 SL, Duplosan Super 600 SL, Granstar 75 WG, Grody! 75 WG, Lintur 70 WG) was applied in three doses: recommended dose, 1/2 of recommended dose and 1/4 of recommended dose. The herbicides were applied in the tillering stage of spring wheat. In some cases it is possible reducing doses of herbicides but decision about choice of herbicide type and dose should be considered in connection with weather conditions before application.
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Authors and Affiliations

Kinga Matysiak
Stanisław Stachecki
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Abstract

In the years 1999-2001 occurrence of eriophyoid mites (Eriophyoidea) and spider mites (Tetranychidae) on wild grasses growing in Wielkopolska region was investigated. Seven species of eriophyoid mites and three of spider mites were found on 24 grass species. Eriophyoid mites infested 38% and spider mites 57% of all examined samples. The most frequent inhabited grass species by eriophyoid mites were Agropyron repens and Lolium perenne, while by spider mites Dactylis glomerata and Bromus mollis.
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Authors and Affiliations

Anna Skorupska
Jan Kozłowski

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