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WEED'S DISTRIBUTION IN RICE FIELDS OF FIVE DISTRICTS OF THE PUNJAB
Abstract
Survey of rice (Oryza sativa L.) fields of five districs of Punjab Viz. Gujranwala, Sialkot, Gujrat, Kasur and Sheikhupura revealed that Cynodon dactylon, Cyperus rotundus, C. difformis, Echinochloa colonum. E. glabrescense, and Paspalum paspaloides were highly abundant weeds widely distributed through out the surveyed areas. Percentage frequency of occurrence of these weeds in different fields of a district was generally high. However, great variability in abundance among the districts and in frequency among the fields within a district was observed. Among the six abundant and frequently occurring weeds. four species namely C. roundus, C. difformis. E. colonum and P. paspaloides were also characterized with dense population and covered a large area in rice fields. These weeds are, therefore, warranting to be eradicated with out any further delay to get better rice production in the coming years.
