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Spirodela polyrhiza Synonyms: Common Name(s): Great duckweed Family: Lemnaceae Growth Habit: Perennial Invasiveness: Noxious weed:PR Growing Days: 120 Temperature:
Precipitation: 30 to 140 (cm.) Winter Minimum: -39° (C) Soil pH: 5.2 to 7.1 Soil Texture/Type: Fine to medium textured soils Soil Drainage: Very Poor Photoperiod Response: Light Intensity: Comments: Aquatic herb found in quiet permanent waters. No salt tolerance. No drought resistance. Medium to clay soils. Diseases: No diseases found for the ten pathogens searched. Uses: Weed - , Animal Food - fodder Woodiness: Climate: Geographical Origin: Africa, Europe, North America, Australia, Southern Asia
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