Seasonal Biomass and Carbohydrate Allocation in a Southern Population of Eurasian Watermilfoil.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
Pagination or Media Count:
Seasonal biomass and carbohydrate allocation patterns of Eurasian watermilfoil Myriophyllum spicatum L. were evaluated to elucidate potential points in the seasonal phenological cycle for improved control. Eurasian watermilfoil was sampled from outdoor 0.3-ha ponds in Lewisville, TX, from January 1991 to December 1993 and analyzed for free sugars, starch, and total nonstructural carbohydrates TNC. Root crowns stored up to 30-percent TNC, followed by autofragments 25 percent, lower stems 22 percent, and upper stems and inflorescences 12 percent. Low levels of stored carbohydrates occurred in July 1991, April 1992, and May 1993. Low levels of stored carbohydrates also were observed in October for all 3 years. Low points in carbohydrate storage might be exploited to improve management of Eurasian watermilfoil.