Smallflower umbrellaplant, Cyperus difformis

Seedling leaf has parallel veins and a shiny surface stem is triangular leaves emerge in a triangular pattern (3 dimensional) Mature plant flower clusters are globular; stalked or stalkless flower is greenish white with brown marking on each side forms brown fruiting head Management Avoid a fine textured seedbed and shallow water Maintain a dense rice stand Avoid excessive nitrogen fertilizer Herbicides; timing is critical Note: Do not use Londax on resistant biotypes

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