Distribution of Parthenium Hysterophorus in Lahore and Its Biocontrol : Ecological status and biocontrol management options of Parthenium (Parthenium hysterophus L.)weed in Lahore (Pakistan)

Parthenium (Parthenium hysterophorus L.), is an aggressive weed it is native to the subtropics of North and South America but now has invaded other continents like Asia, Australia and Africa during the last few decades and is spreading alarmingly. it is the need of time to evaluate this rag weed and to take some solid steps to control it in environmentally and ecologically save ways. this work will be a good contribution towards it distribution evaluation and biological management.