American pondweed, Potamogeton nodosus

Mature plant has both floating and submerged leaves submersed leaves are alternate; upper leaves may be opposite stems are simple or slightly branched flowers are in elongate heads or spikes held above the water surface reproduces by seeds, tubers, or winter buds on the tips of rhizomes, usually beneath the soil surface Management Plow the field to a depth of 8 to 12 inches and follow by a rotation to a nonirrigated crop Apply herbicide before development of winter buds

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Modified: 11 Sep 1997 Comments to jayoung@ucdavis.edu