sentences:  A million tons of fresh biomass would require 75 trucks with a capacity of 40m^3, per day, for 365 days to get rid of a million tons of water hyacinth.The water hyacinth would then be transferred to a dumping site and allowed to decompose which releases CO2, CH4 and nitrous oxides which would all negatively impact the air quality and contribute to global warming.The three commonly used control methods against water hyacinth infestations are physical, chemical, and biological controls.