Bromus danthoniae (Gintzburger et al., 2003)

From PlantUse English
Jump to: navigation, search
Aristida pennata
Gintzburger et al., Rangelands in Uzbekistan, 2003
Bromus danthoniae (Gintzburger et al., 2003)
Bromus tectorum
Bromus danthoniae
Bromus danthoniae
Bromus danthoniae

Bromus danthoniae Trin.

Local name:

  • Russian: Костер Дантонии, ялтырбаш - koster Dantonii, jaltyrbaš
  • Uzbek: Yaltyr-bash
  • Kazakh: Ul’ken
  • Turkmen: Epelek

Chromosome number: 2n = 14 (Avdulov 1928; Hill 1965; Chuksanova unpublished data; Fedorov 1969).

Description and morphology: Annual spring ephemeral grass with thin, sometimes slightly leafy stem rising from base. Inflorescence: bordered with purple; glume extended into long rigid awn.

Reproduction: Sexual. Dormancy B1 type. Germination improved after 6 months in dry storage. Seed viability 4 years. Stratification under variable temperatures (3–8 °C/20 °C/30 °C and light cycle) stimulates germination.

Pastoral importance: Poor biomass production. Palatability poor except occasionally at green stage. Not grazed when dry because of coarseness of stems, leaves and spikelets. Similar problems encountered as for Bromus tectorum. Good for haymaking when harvested before flowering.

Fodder value: Absolute dry biomass contains (% DM): protein 9.2; fat 2.2; cellulose 28; moisture 5.5; nitrogen-free extract 49.

Habitat: Common near housing and farms, also spreads on to overgrazed rangeland or poorly managed cereal fields. Widely distributed on desert and semi-desert pastures on loamy-sand soils. Less common than Bromus tectorum.

Distribution: Widely distributed weed in Mediterranean regions of the world.