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1

Cropfield-weed communities of Northern Poland on the Eastern and Western sides of the Vistula

100%
Szmeja K.
Acta Agrobotanica
|
2000
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tom 53
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nr 2
The research was carried out in the following 9 mesoregions of northem Poland, located on either side of the Vistula: Cassubian Coast, Cassubian Lakeland, Elbląg Plateaux, Górowo Plateaux, Ermelandic Plain, Iława Lakeland, Vistula Delta, Starogard Lakeland and Lower Vistula Valley. Atotal of 11 cropfield-weed communities have been distinguished and described. Those found in cereal crops included: Teesdaleo-Arnoseridetum, Papavereturn argemones, a transition community between Vicietum tetraspermae and Aphano-Matric.:arietum, AphanoMatric.:arietum, Lathyro-Melandrietum and Spergulo-Chrysanthemetum segeti. In root crops the oceurrenee was found of: Digitarietum isc.:haemii, Ec.:hinoc.:hlooSetarietum, Lamio-Veronic.:etum politae, Galinsogo-Setarietum, Fumarietum officinalis and Spergulo-Chrysanthemetum segeti. Due to the presence in the patches of most communities, especially root crop communities, of many common species, they show a number of similarities, floristie and structural.
2
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Plant communities and associations of root crops of the Kaluszynska Upland

86%
Skrajna T., Skrzyczynska J.
Acta Agrobotanica
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2008
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tom 61
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nr 2
A phytosociological classifi cation and the characteristics of weed communities developing in root crops of the Kałuszyńska Upland are given in this paper. The presence of three associations: Digitarietum ischaemi, Echinochloo-Setarietum and Lamio-Veronicetum politae, as well as of two communities: Setaria pumila–Setaria viridis and Panico-Setarion alliance, has been found. The differentiation in trophic and soil moisture conditions of habitats results in the fl oristic diversity of communities, divided into lower phytosociological units. Two variants have been distinguished within the association Digitarietum ischaemi, whereas Echinochloo-Setarietum has been divided into 2 subassociations and 6 variants.
3

The vegetation of rice fields in North Korea and its relation to South Korea and Japan

86%
Kolbek J., Dostalek J., Jarolimek I.
Fragmenta Floristica et Geobotanica
|
1996
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tom 41
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nr 2
4
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Effects of the penetration of Artemisia vulgaris L. into maize crops as a result of the use of reduced tillage

72%
Golebiowska H.
Acta Agrobotanica
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2014
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tom 67
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nr 2
5

The transformations of field communities with Illecebrum verticillatum L. (Cariophyllaceae) on the borderlands of its European range (Central-Eastern Poland)

72%
Skrajna T., Gozdowski M., Lugowska M.
Polish Journal of Ecology
|
2014
|
tom 62
|
nr 1
Changes in field communities with Illecebrum verticillatum at the north-eastern limits of the species range in Poland were recorded with the phytosociological method over the years 1994–2010. The material studied consisted of 136 phytosociological relevés which were subjected to numerical classification and ordination according to habitat gradients by the Detrended Correspondence Analysis (DCA). Changes in communities and habitats were assessed using the following indicators: species richness, the Shannon-Weiner index of biodiversity (H), Simpson’s index of domination (C) and floristic value (FV). The values of these indicators were statistically analysed using the Kruskal-Wallis test at P <0.05. Spearman’s rank correlations were calculated using Statistica 10 to determine relationships between the indicators analysed.On the basis of numerical classification 7 types of phytocoenoses were identified, representing communities at the initial and final phases of the study. At the beginning the communities included: Arnoserido-Scleranthetum with Illecebrum verticillatum, in stubble fields and Spergulario-Illecebretum verticillatum and Digitarietum ischaemi with Illecebrum verticillatum in root crops; at the end of the study they included: Vicietum tetraspermae and the community with Aperion spica-venti in cereals and the diverse, floristically common association Echinochloo-Setarietum. The communities identified reflected changes in the phytocenoses of the permanent sites due to intensification of field production. The comparison of indicators of species number, index of biodiversity and index of domination revealed significant differences. The analysis of habitat indicators according to Ellenberg demonstrated that soil temperature and moisture decreased whereas soil pH and nitrogen increased. The comparison of the taxonomic value of a species group for the association Radiolion linoidis and floristic value of communities revealed that species from the from the alliance R. linoidis were disappearing at a rapid rate.
6
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Stubble field plant communities of the Mazowiecki Landscape Park

72%
Skrajna T., Lugowska M.
Acta Agrobotanica
|
2010
|
tom 63
|
nr 2
The characteristics of communities found in unploughed stubble fields of the Mazowiecki Landscape Park and its agricultural buffer zone are presented in the paper. The association Echinochloo-Setarietum divided into a typical variant, the variant with Galinsoga parviflora, and the variant with Bidens tripartite, was the most frequently noted and floristically differentiated association. Patches of Digitarietum ischaemi were also frequently observed in stubble fields on the poorest habitats. Rarely, on fertile soils, small patches of floristically rich communities with Veronica agrestis were recorded. Periodically, excessively wet habitats were seldom occupied by the speciesrichest phytocoenoses of Centunculo-Anthoceretum punctati. Single patches of the community with Setaria pumila, the form with Aphanes arvensis, were observed only in the south-eastern part of the Park.
7

Changes in weed community infesting common bean crop

72%
Chmielowiec P., Borowy A.
Folia Horticulturae
|
2005
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tom 17
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nr 1
3-10
8
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The occurrence of Arnoserido-scleranthetum (Chouard 1925) R.Tx. 1937 in the Slowinski National Park

72%
Sobisz Z.
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
|
2000
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tom 04
The Park is situated on the Słowiński Coast and its almost whole area belongs to the Baltic Coastal Geobotanical Region. The studies were carried out in the cultivated fields of the SNP, mainly covered by pine forests, where agriculture plays a minor part. The material collected in the years 1997-1998 comprised 115 phytosociological relevés made by the Braun-Blanquet method, according to the classifications and nomenclature given by Kornas (1972). The names of species were adopted after Mirek et al. (1995). The paper presents the occurrence and analytical characteristics of subatlantic association against the background of habitat condition. Arnoserido-Scleranthetum is floristically the poorest community of weeds developing in winter cereals of the SNP. It is differentiated into two variants: A.-S. typicum and A.-S. myosotetosum with Anthoxanthum aristatum Boiss.
9

The impact of tillage systems on weed community on loessial soil in the region of Lublin

72%
Jedruszczak M., Bujak K., Wesolowski M.
Bibliotheca Fragmenta Agronomica
|
1997
|
tom 2A
10

Weed communities of date-palm orchards in the Feiran Oasis [South Sinai, Egypt

72%
El-Ghani M. M. A.
Fragmenta Floristica et Geobotanica
|
1998
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tom 43
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nr 2
11

Effectiveness of herbicides mixtures applied according to diversified weed community in maize cultivation

58%
Golebiowska H.
Pestycydy
|
2006
|
nr 1-2
49-57
12
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An attempt to use functional diversity indices for the assessment of weed communities

58%
Jastrzebska M., Wanic M., Kostrzewska M. K., Treder K., Nowicki J.
Acta Agrobotanica
|
2012
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tom 65
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nr 1
This paper presents an analysis of changes in functional diversity of weeds in spring barley grown in the period 1990- 2004 in crop rotation after potato with a 25% share of this cereal (potato – spring barley – field pea – winter triticale) as well as in crop rotation with its 75% share (potato – spring barley – spring barley – spring barley) in which barley was grown once and twice after the same barley crop. No weed control was used in the present experiment. Every year in the spring (at full emergence of barley) and before harvest, the species composition and numbers of individual weed species were determined, as well as their weed biomass before harvest. On this basis, the selected functional diversity indices were calculated. Multidimensional techniques were used for dividing weeds into functional groups and for the determination of some of the indices. Potato/barley crop rotation with a 25% share of barley and growing spring barley once and twice after the same barley crop did not differentiate weed functional biodiversity. The weed functional diversity indices showed different variations over time. Higher variation was usually observed for the indices calculated for the summer communities compared to the spring ones. The strength and significance of the positive correlation between weed functional diversity and precipitation in the growing season and of the negative correlation with mean temperature for the period from April to August were dependent on the measure of diversity. The functional diversity indices showed high convergence. The FD and FAD indices proved to be interchangeable.
13
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Influence of crop rotation and meteorological conditions on biodiversity of weed communities in spring barley (Hordeum vulgare L.)

58%
Jastrzebska M., Wanic M., Kostrzewska M. K.
Acta Agrobotanica
|
2010
|
tom 63
|
nr 1
The paper presents the analysis of changes in weed biodiversity in spring barley cultivated in the years 1990–2004 in crop rotation with a 25% proportion of this cereal (potato – spring barley – sowing peas – winter triticale), when it was grown after potato, and in crop rotation with its 75% proportion (potato – spring barley – spring barley – spring barley), when it was grown once or twice after spring barley. In the experiment, no weed control was applied. Every year in the spring (at full emergence of the cereal) and before the harvest, the composition of weed species and numbers of particular weed species were determined, and before the harvest also their biomass. On this basis, the constancy of species in particular years, Shannon–Wiener species diversity indices and diversity profiles according to Rényi were determined. Weed species richness increased linearly at all plots during the 15-year period. Chenopodium album was a constant and dominant species in terms of weed species density and biomass year after year. The quality of the plot had no clear influence on the diversity of weeds in barley. Weed density and biomass showed high year–to–year variability and a positive correlation with the amount of precipitation and a negative correlation with temperature during the period of the study. The significance of the correlation between the productivity of barley and weed diversity was not confirmed.
14
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Weed communities of root crops in the Pamir Alai Mts, Tajikistan (Middle Asia)

51%
Nowak S., Nowak A. S.
Acta Societatis Botanicorum Poloniae
|
2013
|
tom 82
|
nr 2
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