Boro Shama

Local name: বড় শ্যামাঘাস, ডালঘাস, গোবরা, ঝটঘাস, শ্যামা

English name: Barnyard grass, Barnyard millet, Japanese millet, Water grass, Common barnyard grass, Cockspur

Scientific name: Echinochloa crus-galli

Family: Poaceae

Habit

It is an annual weed, resistant to climatic hazard. Similar growth habit with rice; undetectable from rice plants at early growth stages.

Habitat

Found in wet and flooded soil. Seeds can also germinate under water. Growth becomes increasingly poor with continued submergence. Required similar environment as by rice.

Growing season

Annual grass; seeds germinate throughout the year.

Associated crops

Mainly rice, then jute, maize and sugarcane.

Propagating organ

Propagated by seed, prolific seed producer.

Leaf

Linear, smooth, dense green; lower side is wide and upper side is narrow, looks like rice leaf.

Stem

Stem culm; hollow inter node.

Inflorescence

Spikelets have long awn, panicle is long, branched.

Root

Adventitious, fibrous root system.

Control measures

It can be controlled by hand pulling and racking Contact poison may be used as herbicide.