sentences:  In places where water hyacinth is invasive, overabundant, and in need of clearing away, these traits make it free for the harvesting, which makes it very useful as a source of organic matter for composting in organic farming.It is used internationally for fertilizer and as animal feed.In Bengal, India the "kachuri-pana" has been used primarily for fertilizer, compost or mulch, and secondarily as fodder for livestock and fish.