Itchgrass

Catalogue Type

Weed Catalogue

Scientific Name

Rottboellia cochinchinensis(Lour.) W.D. Clayton

Family

Poaceae

Distinguishing Characters

one of the world’s worst weeds; emerges from up
to 0.15-m depth, but relatively low seed viability

Photo of Weed

Description

Found in: upland Establishment method: DS
Growth habit: tufted, erect, and branching; rooting at
nodes; up to 3 m Moisture: dry to moist; well-drained
Competitiveness: very high Seed contaminant: yes
Cultural control: clean seed and implements; fl ooding;
rotate to broadleaf crops; control in nearby areas
Reported resistance: ACCase inhibitors (USA)
Life cycle: annual Seed wt: 15 Method(s) of reproduction: seeds
Dormancy: 1 to 4 mo; after-ripening requirement
Elevation: up to 1,500 m Light: sunny; shade-sensitive