Weed Communities of Cereal Crops Grown on Differently Revegetated Cut-Over Peatland Sites

1989 ◽  
Vol 26 (2) ◽  
pp. 563
Author(s):  
Veikko Salonen
Keyword(s):  
Cereal Crops ◽  
Weed Communities

scholarly journals Cropfield-weed communities of northern Poland on the eastern and western sides of the Vistula

2013 ◽  
Vol 53 (2) ◽  
pp. 105-115
Author(s):  
Krystyna Szweja
Keyword(s):  
Common Species ◽  
Cereal Crops ◽  
Root Crop ◽  
Root Crops ◽  
Weed Communities ◽  
Northern Poland ◽  
Vistula Delta

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. A total of 11 cropfield-weed communities have been distinguished and described. Those found in cereal crops included: <em>Teesdaleo-Arnoseridetum, Papaveretum argemones</em>, a transition community between <em>Vicietum tetraspermae</em> and <em>Aphano-Matricarietum, Aphano-Matricarietum, Lathvro-Melandrietum</em> and <em>Spergulo-Chrysanthemetum segeti</em>. In root crops the occurrence was found of: <em>Digitarietum ischaemii, Echinochloo-Setarietum, Lamio-Veronicetum politae, Galinsogo-Setarietum, Fumarietum officinalis</em> and <em>Spergulo-Chrysanthemetum segeti</em>. Due to the presence in the patches of most communities, especially root crop communities, of many common species, they show a number of similarities, floristic and structural.

scholarly journals Red list of vascular plants of the Lublin Region

2017 ◽  
Vol 71 (1) ◽  
pp. 7 ◽  
Author(s):  
Anna Cwener ◽  
Wiaczesław Michalczuk ◽  
Rafał Krawczyk
Keyword(s):  
Threatened Species ◽  
Vascular Plants ◽  
Vascular Plant ◽  
Red List ◽  
Deciduous Forests ◽  
Cereal Crops ◽  
Vulnerable Species ◽  
Weed Communities ◽  
Data Deficient ◽  
Near Threatened

The aim of this study is to present the updated list of rare and threatened vascular plant species in the Lublin province. The threatened species categories are presented according to the IUCN criteria. The regional list contains 408 species (that makes up 25% of the Lublin Region flora); 56 of which are considered critically endangered, 81 represent endangered species, 51 belong to the category of vulnerable species, and 49 are near threatened species, respectively. The presence of 37 species has not been confirmed and therefore they are listed as regionally extinct (RE). Of the total number of species, 134 are rare, but because the data about those species is insufficient, they have been classified as DD category (data deficient). The species of the genera: Alchemilla, Callitriche, Hieracium, Oenothera, Rosa, Rubus and Taraxacum have not been evaluated (NE category). Other species – those whose occurrence is doubtful and all neophytes were defined as not applicable (NA). The endangered taxa occur mostly in dry grasslands, deciduous forests, wetlands, and calcareous weed communities of cereal crops.

scholarly journals Biotic homogenization and differentiation in weed vegetation over the last 70 years

2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Urban Šilc
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Biotic Homogenization ◽  
Cereal Crops ◽  
Generalist Species ◽  
Root Crops ◽  
Weed Communities ◽  
Cereal Fields ◽  
Over Time

AbstractBiotic homogenization is the increasing similarity of the species composition of communities over time and represents a loss of biodiversity. We analysed changes in weed vegetation over a period of 70 years by comparing three datasets (from 1939, 2002 and 2012) sampled with the same methodology. We present the results of changes in species richness, homogenization and differentiation as expanding neophytes and generalist species. The species richness of weed communities decreased and the number of neophytes in cereal fields and root crops increased over time. The decreased ratio of specialists to generalists in vernal communities and cereal crops indicates homogenization, while the ratio of generalists to specialists increased in root crops.

Formation of botanical composition of clover cereal and alfalfa cereal crops agrophytocenoses depending on sowing method

2020 ◽  
pp. 160-168
Author(s):  
I. Senyk
Keyword(s):  
Festuca Arundinacea ◽  
Global Climate ◽  
Phleum Pratense ◽  
Grass Species ◽  
Cereal Crops ◽  
Forest Steppe ◽  
Botanical Composition ◽  
Cross Sectional ◽  
Row Crops ◽  
Adverse Weather

Botanical composition of grasses is one of the most important indicators the biological value and quality of the obtained hay and pasture forage, the longevity of hayfi elds and pastures depend on. The issue of changing the botanical composition of agrophytocenoses is especially important in the context of global climate change, which in recent decades is also manifested in the territory of Ukraine, as it is possible to establish the most adapted species of legumes and cereals to adverse weather conditions and to identify eff ective technological methods of managing these processes for maximum conservation economically valuable species in the herbage. The purpose of the research is to establish the infl uence of diff erent ways of sowing of clover and alfalfa cereal crops agrophytocenoses on the formation of their botanical composition. Field studies have established diff erent eff ects of conventional in-line, cross-section and cross-sectional methods of sowing on the formation of botanical composition of grass mixtures of clover meadow (Trifolium pratense) varieties Sparta and Pavlyna with timothy meadow (Phleum pratense) and fenugreek multifl oral (Lolium multifl orum) and of agrophytocenoses of alfalfa of Sinyukha and Seraphima sowing varieties with reed fire (Festuca arundinacea Schreb) and middle wheatgrass (Elytrigia intermedia). For the average of four years of life of clover and alfalfa cereal crops agrophytocenoses, the highest proportion of legume component was observed with split-cross sowing – 51.6 % for Sparta, 53.1 % for Pavlyna, 60.3 % for Seraphima and 61.6 % for the Sinyukha variety. In the fourth year of life (the third year of use) of sowed leguminous-cereals agrophytocenoses, the preservation of the legume component was 14.6–15.5 % in clover-cereals grass mixtures with the Sparta variety and 16.0–16.8 % with the Pavlyna variety. In alfalfa grasslands, these indicators were 54.0–55.1 % with Seraphim and 55.0–56.2 % with Sinyukha. Among the studied varieties of clover meadow and alfalfa sowing proved better in the conditions of the Forest Steppe of western Pavlyna and Sinyukha. Cross-sectional and divided cross-sectional sowing of legumes and cereals mixtures proved to be better compared to conventional row crops in terms of conservation of economically valuable grass species. Key words: agrophytocenosis, botanical composition, clover meadow, alfalfa sowing, sowing methods.

NATURAL REPRODUCTION OF ENTOMOPHAGES TO RESTORE BIOCENOTIC REGULATION IN CEREAL CROPS

2018 ◽  
Vol 53 (5) ◽  
pp. 1070-1079
Author(s):  
Zh.A. Shirinyan ◽  
◽  
M.V. Pushnya ◽  
E.Yu. Rodionova ◽  
E.G. Snesareva ◽  
...  
Keyword(s):  
Cereal Crops ◽  
Natural Reproduction

Economic eficiency of cereal crops production by application of PAM

2007 ◽  
Vol 35 (2) ◽  
pp. 693-696
Author(s):  
Krunoslav Zmaic ◽  
Ruzica Loncaric ◽  
Tihana Sudaric
Keyword(s):  
Cereal Crops

IMPLEMENTATION OF LOW-TRAUMATIC TECHNOLOGY OF GRAIN SEPARATION FROM A WHEAT EAR: RESULTS OF THE PILOT STUDIES

2020 ◽  
Author(s):  
V.I. Pakhomov ◽  
◽  
S.V. Braginets ◽  
O.N. Bakhchevnikov ◽  
A.I. Rukhlyada ◽  
...  
Keyword(s):  
Separation Process ◽  
Experimental Device ◽  
Cereal Crops ◽  
Pilot Studies ◽  
Traditional Technology ◽  
Air Jet ◽  
Cereal Breeding ◽  
Grain Damage ◽  
Partial Abrasion

Low-traumatic technology of grain separation from an ear is developed. It consists in influence of an air jet on an ear.It leads to rolling of an ear on a surface of the threshing device concave and causes its partial abrasion which is followed by grains separation. Process of wheat ears low-traumatic threshing in the experimental device yields satisfactory results, provides reduces grain endosperm damage on 10-12% in comparison with traditional technology. Germ of grain damage decreases by 5%.Crushing of grain made no more than 0,5%. Use of the developed technology of the low-traumatic threshing will allow to reduce grain damage of cereal crops in case of the harvesting. It is important by cereal breeding.

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