water hyacinth (eichhornia) grows on river

water hyacinth eichhornia grows lake invasive plant species american cleans reservoir phosphates animal aviculture barndoor fowl barnyard bird brown chicken farm cholera gallinarium husbandry domestic duck feet farming breeding murky pond poultry industry keeping meat river stock vietnam macrophyte algae feed bionomics contamination ecology crassipes eutrophication fertilizer breed ducks peking macrophytes organic pollution utrophication