WEED BIODIVERSITY AND PHYTOSOCIOLOGICAL COMPOSITION OF BHADOHI DISTRICT OF UTTAR PRADESH, INDIARanjit Singh and P.N. Dongre
Standard phytosociological methods were applied to the vegetation of one wasteland and one crop field represented by Site I and Site II situated in Bhadohi district of Uttar Pradesh, India. At both sites heavy infestation of weeds was observed. The total number of weed species was 31 and 28 at Site I and Site II, respectively. Out of these 20 species were found to occur at both the sites. On the basis values of frequency and IVI, Anagallis arvensis, Chenopodium album, Cyperus rotundus, Cyperus squarosus and Cynodon dactylon were found to show a very successful establishment at Site I, whereas that for Site II was exhibited by Anagallis arvensis, Cynodon dactylon, Lathyrus aphaca, Phylanthus niruri and Polygonum plebium. Such a successful establishment of weeds in the study fields could be an outcome of poor cultural practices in crop fields and different interference mechanisms of weeds including allelopathy which can result in heavy crop losses.
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