Sudangrass (Sorghum sudanense) and sorghum (S. bicolor) are annual forage species with ratoon growth. Objectives of this experiment were to determine the effects of planting dates on field emergence and forage yield of sudangrass and sorghum. Sudangrass and sorghum were planted monthly from mid-March to mid-October in 1994 and 1995, respectively. Emerged plants were recorded daily. Surviving seedlings were determined 2 weeks after emergence. Emergence percentages of sudangrass ranged from 61.7% to 90.6% and those of sorghum ranged from 47.5% to 81.3% in 1994. All the surviving percentages were above 90% for both sudangrass and sorghum in 1994. The emergence percentages of sudangrass ranged from 64.1% to 86.1% and those of sorghum ranged from 73.4%to 86.7% in 1995. The surviving percentages of sudangrass were between 77.7% and 95.7% and those of sorghum were between 88.5% and 100%, respectively. Sudangrass produced more forage yield than sorghum did. The forage yield was the highest planted in March among months in both 1994 and 1995. It was suggested that sudangrass should be planted before May to obtain higher forage yield
