Effects of environmental factors on weed species composition of cereal and stubble fields in western Hungary |
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Authors: | Gyula Pinke Robert Pál Zoltán Botta-Dukát |
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Institution: | 1.Faculty of Agricultural and Food Sciences,University of West Hungary,Mosonmagyaróvár,Hungary;2.Faculty of Natural Sciences,University of Pécs,Pécs,Hungary;3.Institute of Ecology and Botany,Hungarian Academy of Sciences,Vácrátót,Hungary |
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Abstract: | Multivariate analysis of data obtained from 184 cereal and stubble fields in low-input agricultural systems located in western
Hungary was undertaken in order to asses environmental factors affecting weed species composition. For each variable, the
gross and net effect on weed species composition was calculated. All variables considered in this study had a significant
effect on weed species composition and explained 26.99% of the total variation. Most variation in species composition was
explained by the aspect (cereal vs. stubble), followed by soil pH, mean annual precipitation, soil texture, mean annual temperature, and altitude. Separating
the cereals and stubbles soil pH became the most important factor. Our results suggest that during the long vegetation period,
cereal weed communities dominated by winter annuals are replaced by stubble-field weed communities dominated by summer annuals.
This seasonal change may also have the same important effect on weed species composition as crop types. |
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Keywords: | |
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