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    Wyświetlanie 1-2 z 2
    Tytuł:
    Weed flora of cereals in different farming systems.
    Autorzy:
    Zalai, Mihály
    Domer, Zita
    Powiązania:
    https://bibliotekanauki.pl/articles/2199567.pdf
    Data publikacji:
    2010-06-01
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    careals
    conventional farming
    diversity
    ecological farming
    weed cover
    weed flora
    Opis:
    Cereals are important crops all over the world. Cereals are grown on a quarter of cultivated land in Hungary. Cereals are competitive and thus they play a significant role in ecological farming. The most important species in the Hungarian ecological farms are winter wheat and spelt. Weed floras in ecological farming systems are different from those in conventional cropping systems. These differences are due to different cropping practices, including weed control and fertilization methods.Our goal was to determine how farming systems affected the weed flora. A 2500 ha ecological farm and a neighbouring conventional farm in south-eastern Hungary were surveyed four times during the season in 2007 and 2008. Effects of farming systems were assessed for weed cover, number of species, and Shannon’s diversity index.The ecological farm showed higher weed-cover than conventional farm. The differences were rather high in the inner areas and on the margins, too. Farming systems same differed in values of number of species. More species were found in ecological farm. The Shannon diversity showed significant difference only in the inner areas. The diversity of margins were similar...
    Źródło:
    Plant Breeding and Seed Science; 2010, 61; 15-24
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Threat to arable weeds in Poland in the light of national and regional red lists.
    Autorzy:
    Bomanowska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2199572.pdf
    Data publikacji:
    2010-06-01
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    arable flora
    categories of threat
    Polska
    red list
    threatened species
    weed
    Opis:
    The objective for the study is to present the current threats of arable weeds in Poland. The analysis was conducted on the Polish red lists of arable species (3 national and 22 regional and local) prepared in the period 1994-2008. A total of 105 weeds have been considered as weeds threatened in Poland. All regional and local red lists included a joint total of 184 taxa. The particular regions have between 13 and 95 threatened taxa. The species most frequently appearing in the listings are: Agrostemma githago, Bromus secalinus and Camelina microcarpa. Five taxa (Bromus arvensis, Camelina alyssum, C. sativa, Cuscuta epilinum, Spergula arvensis subsp. maxima) are considered extinct on the national scale, while in the individual regions this number ranges from 1 to 15. A relatively high share is allocated on many regional and local red lists to taxa with an indeterminate level of threat. The conducted comparison shows that there is an urgent need to compile similar listings for the remaining areas of Poland, making it possible to create an updated and real listing of threatened weeds. At the same time, it is necessary to update the existing red lists and to adopt more precise quantitative criteria for the threat estimation, in accordance with the estimation parameters introduced by the IUCN and currently in force...
    Źródło:
    Plant Breeding and Seed Science; 2010, 61; 55-74
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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