| Pak. J. Bot., 37(3): 667-672, 2005. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
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WEED FLORA CHANGES IN COTTON GROWING AREAS DURING THE LAST DECADE AFTER IRRIGATION OF HARRAN PLAIN IN ŞANLIURFA, TURKEY BEKİR BÜKÜN*
Abstract:
In order to determine changes in weed flora due to continuous cotton
production related to irrigation, the results of surveys performed in
1995-1996 and was recently performed at the end of July 2004, were compared.
Based on the results of first surveys (1995-1996), 36 weed species belonging
to 14 botanical families were identified and in the second surveys (2004),
24 species were recorded. Amaranthus albus, Amaranthus retroflexus,
Convolvulus arvensis, Cynodon dactylon, Echinocloa colonum, E crus-galli,
Physalis angulata, Physalis philadelphica, Setaria verticillata, Solanum
nigrum, Sorghum halepense and Xanthium strumarium are more
frequent and densities species. It was assumed that as well as the other
factors, irrigation and continuous cotton cultivation had an important
role to influence on the shifting of weed flora.
Department of Plant Protection, Faculty of Agriculture, Harran University,
63040 Sanliurfa, Turkey. |
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