Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 7

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

The effect of the strip-management on reduction of Aphis fabae [Homoptera: Aphididae] populations by predators on sugar beet crop

100%
Twardowski J. P., Hurej M., Klukowski Z.
Journal of Plant Protection Research
|
2005
|
tom 45
|
nr 3
213-219
The studies were carried out at the Agricultural Experimental Station at Pawłowice near Wrocław, Poland, in 1998-2000. The main aim of the study was to compare the natural reduction of the black bean aphid by predators in sugar-beet crop surrounded by strips of mixture of cultivated plants, weedy strips or bare soil. The lowest number of Aphis fabae insugar-beet crop was observed at the plots surrounded by strips of mixture of Sinapis alba, Phacelia tanacetifolia and Coriandrum sativum, and at those surrounded by weedy strips. The greatest number of aphids was recorded on sugar-beet plots surrounded by bare soil. The relationships between the pest and its predators were the least stable in bare soil treatment. Significant pressure of predator activity in all treatments was shown in the first several days of the observation.
2

Wpływ zróżnicowanej gęstości siewu nasion lnu oleistego (Linum usitatissimum L.) na wciornastki (Thysanoptera)

100%
Hurej M., Kucharczyk H., Twardowski J. P., Gruss I.
Fragmenta Agronomica
|
2016
|
tom 33
|
nr 4
3

Effect of different management practices on ground beetle (Coleoptera: Carabidae) assemblages of uphill grasslands

100%
Twardowski J. P., Pastuszko K., Hurej M., Gruss I.
Polish Journal of Ecology
|
2017
|
tom 65
|
nr 3
Grasslands, especially those under ecological management (i.e. mowing, and grazing without fertilizers and chemicals), have significant importance for many arthropods, including ground beetles. We studied the abundance and species diversity of Carabidae of four uphill grasslands (West Sudety Mountains, Poland) under different management intensity: cattle grazing (one or four times per year), mowing, and alternatively managed (grazing/mowing). Beetles were collected using pitfall traps during three whole grazing seasons, i.e. from April to October in 2007–2009. The most frequent species of beetles, on each of the plots, were predators Poecilus cupreus, Calathus fuscipes and Nebria brevicollis. Sixtyfour ground beetle species were found altogether. Species richness ranged from 42 to 47, with the mean number of individuals per trap day-1 from 0.006 to 0.018. In the years of the study the number of ground beetles and their species diversity were higher on meadows mown once per year and alternatively managed grasslands as compared with grazed sites. Therefore, the simplified, organic way of agricultural production with reduced mowing or moving combined with grazing can be considered as appropriate in preserving the biodiversity of the grasslands in mountainous regions.
4

An effect of strip-management on carabid beetles [Col., Carabidae] in sugar beet crop

100%
Twardowski J. P., Hurej M., Jaworska T.
Journal of Plant Protection Research
|
2006
|
tom 46
|
nr 1
61-71
The attractiveness of uncultivated (weedy) and cultivated strips (planted with a mixture of flowering plants) and the adjacent sugar beet crop to Carabidae was studied in 1999–2000 at the Experimental Research Station near Wrocław, Poland. Obtained results showed that greater plant abundance and their diversity on weedy strips had a positive effect on the number of carabid beetles. Also more carabid species were identified in uncultivated strips than in strips of mixture of Phacelia tanacetifolia, Coriandrum sativum and Sinapis alba. The lowest number of species was trapped in sugarbeet crop and bare soil. The most numerous species in all treatments were Pseudoophonus rufipes, Anchomenus dorsalis (Pont.), Poecilus cupres and the species of the Bembidion genera.
5

Flea beetles (Coleoptera, Chrysomelidae, Alticinae) on genetically modified linseed (Linum usitatissimum L.)

100%
Hurej M., Scibior R., Twardowski J. P., Kotecki A.
Progress in Plant Protection
|
2016
|
tom 56
|
nr 4
6

Possibilities and consequences of growing genetically modified maize cultivars resistant to pests

76%
Dabrowski Z. T., Beres P. K., Twardowski J. P., Hurej M., Klukowski Z., Warzecha R., Sowa S.
Progress in Plant Protection
|
2013
|
tom 53
|
nr 4
Genetically modified (GM) plants currently cultivated around the world are characterised by their tolerance to herbicides (soybean, cotton, rape, maize, sugar beet, alfalfa), resistance to selected pest groups (maize, cotton) and better functional properties (potatoes). Since 1999, global increase in the field area under GM cultivation had been observed, up to 160 million ha in 2011. Field research on use of GM maize varieties with expression of Cry1Ab protein toxic to the European Corn Borer caterpillars, conducted in Poland showed that plant damage was limited by 95% on average versus standard varieties. The comprehensive study, conducted under the programme “Environmental and economic aspects of allowing transgenic plants cultivation”, coordinated by the Plant Breeding and Acclimatisation Institute, confirmed results of 15-year long observations in Spain and 10-year long observations in Germany about no significant effect of the discussed results on various non-target species populations. Mass cultivation of GM cotton and maize varieties in the U.S., China or South Africa, also disclosed its limitations, similarly to other plant protection methods. It is therefore recommended as one of many important elements of the integrated plant protection.
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

The quantitative changes of ground beetles (Col., Carabidae) in Bt and conventional maize crop in southern Poland

76%
Twardowski J. P., Beres P. K., Hurej M., Klukowski Z., Dabrowski Z. T., Sowa S., Warzecha R.
Journal of Plant Protection Research
|
2012
|
tom 52
|
nr 4
In the southern part of Poland, ground beetle fauna was studied in the first large-scale Bt maize experiment. The aim of this study was to determine the long term impact of the Bt maize cultivar in comparison to conventional plants, on selected non-target arthropods. The DKC 3421 YG cultivar (Bt maize) and the respective isogenic non-Bt varieties (DKC 3420) were cultivated at two locations: (a) Budziszów near Wrocław and in Głuchów near Rzeszów in the south-eastern region of Poland, in the 2008-2010 growing seasons. For comparative analysis, two additional non-Bt cultivars sprayed with a lambda-cyhalotrine insecticide were also included. To monitor population density of surface-active invertebrates of the Carabidae family, eighty pitfall traps were used at each location. The average number of ground beetle populations in the Bt-maize cultivar DKC 3421 YG did not significantly differ from the number of beetles in the conventional ones. Significant differences between the number of beetles occurred on individual dates only. Usually, these differences related to the considerably smaller total number of beetles in the whole replication. Probably, the variation in the number of beetles was caused by climatic factors or the terrain layout, therefore it cannot be related to the cultivar effect.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.