Composting System to Control Water Hyacinth
Eichhornia crassipes, or water hyacinth, poses a threat to the ecosystem of Spring Lake at the headwaters of the San Marcos River. Water hyacinth can clog waterways, lower dissolved oxygen levels, and crowd out native species.
The River Systems Institute at Texas State University developed a five-acre composting operation that used water hyacinth harvested from Spring Lake together with poultry litter and other feedstocks. Scientific examination of the resulting compost showed that water hyacinth seeds and other propagules (tissue that can sprout new plants) are destroyed when compost piles are maintained at or above 135 degrees Fahrenheit.
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