We studied the habitat preference of common ragweed (Ambrosia artemisiifolia L.) in the Kiskunság, central Hungary, in 605, 20m x 20m coenological relevés sampled within sixteen 25 km2 large study sites. We compared the abundance of ragweed in 17 habitat types, and by using habitat maps tested the effect of surrounding landscape composition on ragweed abundance.
We found that ragweed prefers cultivated areas and young (1-7 years) abandoned fields. We found a weak relationship between the abundance of ragweed and the land use types of surrounding landscape. Our results suggest, that the presence of ragweed depends primarily on the land use of the particular habitat patch..