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Water hyacinth is a common fodder plant in the third world especially Africa though excessive use can be toxic. It is high in protein (nitrogen) and trace minerals and the goat feces are a good source of fertilizer as well. Water hyacinth is reported for its efficiency to remove about 60–80% nitrogen [123] and about 69% of potassium from ...
The consensus is that water hyacinth entered Lake Victoria from Rwanda via the river Kagera, [2] probably in the 1980s. The hyacinth has since spread prolifically, due to a lack of natural predators, an abundance of space, agreeable temperature conditions, and abundant nutrients, including increasing heavy metal pollution in the lake. [3][4]
Charles Darwin was interested in the specialized form of heterostyly found in the family, known as tristyly. Not all of the species are heterostylous. The family contains two genera with around 40 known species. [3] [4] It is best known for the water hyacinth (Pontederia crassipes), which is an invasive species in many waterways.
The anchored water hyacinth is a free-floating aquatic perennial plant. [2] It is known by various common names such as, water orchid, and floating water hyacinth. The water hyacinth could be identified by its distinct thick, waxy green leaves that has a rounded or elliptical shape.
Eichhornia. Eichhornia, commonly called water hyacinths, was a polyphyletic genus of the aquatic flowering plants family Pontederiaceae. Since it was consistently recovered in three independent lineages, it has been sunk into Pontederia, together with Monochoria. Each of the three lineages is currently recognized as subgenera in Pontederia:
The mottled water hyacinth weevil, Neochetina eichhorniae, is a beetle that has been introduced as a biological pest control herbivore agent to waterways and lakes in countries worldwide to control the spread of the invasive noxious weed species Eichhornia crassipes, the water hyacinth, an aquatic plant native to the Amazon basin.
The colour of the blue flower hyacinth plant varies between 'mid-blue', [21] violet blue and bluish purple. Within this range can be found Persenche, which is an American color name (probably from French), for a hyacinth hue. [22] The colour analysis of Persenche is 73% ultramarine, 9% red and 18% white. [23]
The water hyacinth, a plant not native to the lake, also poses a major problem. It grows rapidly, filling up the smaller streams and large expanses of the lake, robbing native plants and animals of nutrients and sunlight. At one time, all boats coming into Nyaung Shwe were required to bring in a specified amount of water hyacinth.