Rapid and effective establishment of seedlings is important both for
crops and weeds. However, it is not always necessary for a weed to have
this character as second and third chances for germination may occur later
in the season.
![](../../../images/Sheldons/parthenium15.jpg)
Parthenium weed (Partheniuim hysterophorus) is
known for its rapid and numerous seedling growth.
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Steve Adkins