Ramdas Kanissery, Camille McAvoy and Mongi Zekri
http://citrusindustry.net
Some weeds are more difficult to manage in the production system than others due to their ability to grow in an available niche. If given a chance to establish, Guinea grass and goatweed can be the two most difficult weeds to manage. This is not just because they both are prolific seed producers, but also due to their inherent biological ability to survive grove conditions.
Guinea grass (Megathyrsus maximus) was originally introduced as a forage crop from Africa in the 16th century. It is listed as a Category II on the Florida Exotic Pest Plant Council’s list of invasive species in 2017. A Category II invasive species is defined as an “invasive exotic” that has yet to demonstrate damage to the ecosystem but has been found to be increasing abundantly in population.