sedge weed response TO:0000030 Sedges are perennial plants which resemble grasses, and commonly grow in shallow water or moist soils, such as rice production fields. Sedges may be distinguished from grasses by their stem cross-section (solid, triangular) and leaf shape (long, thin-textured, narrow and flat). Common sedge weeds in rice fields include Smallflower Umbrella Sedge (Cyperus difformis), Ricefield Bulrush (Scirpus mucronatus), and River Bulrush (Scirpus fluviatilis). A weed damage response (TO:0000347) trait which is the response of a plant to weed competition from sedge weeds. plant_trait_ontology weed damage response trait