PJB-2006-15
CONTROL OF PARTHENIUM HYSTEROPHORUS L., BY AQUEOUS EXTRACTS OF ALLELOPATHIC GRASSES
ARSHAD JAVAID* AND TEHMINA ANJUM
Abstract
Both the root and shoot extracts of the three allelopathic grasses viz., Dicanthium annulatum Stapf., Cenchrus pennisetiformis Hochest and Sorghum halepense Pers., reduced germination and suppressed early seedling growth of exotic weed Parthenium hysterophorus L. Aqueous extracts of D. annulatum and C. pennisetiformis were more inhibitory than extracts of S. halepense. The highest suppressive ability was exhibited by extracts of C. pennisetiformis where 20% shoot and 25% root extract completely inhibited the germination of P. hysterophorus. In general shoot extracts were more inhibitory than the root extracts.
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