Allelopathic effects of Sorghum vulgare Pers.

Sorghum vulgare Pers. a tropical fodder crop significantly reduced the vertical growth and drymass of Sorghum vulgare, Pennisetum americanum, Zea mays and Setaria italica. Aqueous extracts of various plant parts, field soils and decaying mulch significantly reduced germination, radicle growth and water contents of all test species. The toxicity levels were depending upon the plant parts used in the biossay experiments and the sensitivity of the test species. It is suggested that the Sorghum fields be rotated with other crops to maximize the crop productivity.