Author(s): G. Gaddeyya and P. K. Ratna Kumar

Abstract: A systematic field study was conducted in crop fields such as food crops, pulses, vegetable crops, oil crops and commercial crops at Visakhapatnam District. A total of 120 weed species belonging to 40 families were carefully studied and recorded. The weed species were grouped as sedges, grasses and broad laved weeds. The weed species belonging to the family Asteraceae (12 species) and Fabaceae (12 species) were more dominant fallowed by Euphorbiaceae (11 species), Amaranthaceae (10 species) and Poaceae (7 species), respectively. The species of Cyperus rotundus, Cyperus difformis, Cyperus iria, Cyperus diffuses, Echinochloa colona and Echinochloa crusgalli were recorded as more common and dominant weeds in all cereals crops and broad leaved weeds belonging to Asteraceae, Fabaceae, Euphorbiaceae and Amaranthaceae were recorded in vegetable and other field crops....

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