Weed survey was conducted during rainy seasons of 1994 and 1995 in Kandhamal district located in North-Eastern Ghat Zone of Orissa. The cereals viz., upland rice, maize and kuiri (Panicum miliare) were associated with 42, 32 and 25 weed species with total weed density of 177, 324 and 330/m2 belonging to 17, 13 and 11 families, respectively. Grasses+sedges and broad-leaf weeds accounted for 40–45 and 55–60% of total IVI value. Grasses including Echinochloa colona (L.) Link, Dactyloctenium aegyptium (L.) Beauv. and Sporobolus diander Beauv.; sedges Cyperus iria L. and Cyperus rotundus L. and broadleaf weeds Cyanotis cuculata (Roth) R. R. & K., Ageratum conyzoides L. and Celosia argentea L. were the major weeds of upland cereals in the zone.
