Species: 

Echinochloa crus-galli

Common Name: 

barnyard grass

Systems Affected (standardized): 

cropland/pastureland, disturbed/waste areas, rangeland, riparian/aquatic

Regions(s) present (updated by AB): 

ALL

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Impacts: 

This species has the capability to reduce crop yields and cause forage crops to fail by removing up to 80% of the available soil nitrogen. E. crus-galli is considered the world’s worst weed in rice paddies and has been also listed as a weed in at least other 36 crops throughout tropical and temperate regions of the world (Holm et al., 1991). The high levels of nitrates it accumulates can poison livestock. It also acts as a host for several mosaic virus diseases. E. crus-galli is also considered an environmental weed that has become invasive in natural grasslands, coastal forests and disturbed sites in Asia, Africa, Australia, Europe and America

Source? likely to be reintroduced: 

The risk of introduction of E. crus-galli is very high. This grass is a cosmopolitan weed which has been introduced repeatedly in tropical and subtropical regions to be used as fodder and forage (FAO, 2014). When growing under suitable environmental conditions (i.e., moist soils), it spreads rapidly and produces large amounts of seeds which can germinate or remain in the seed bank for several years (Waterhouse, 1994; PIER, 2014).

Info Blurb: 

Can reduce crop yields and cause forage crops to fail by removing up to 80% of the available soil nitrogen. The high levels of nitrates it accumulates can poison livestock. It also acts as a host for several mosaic virus diseases. A cosmopolitan weed which has been introduced repeatedly as fodder and forage. It spreads rapidly and produces large amounts of seeds which can remain in the seed bank for several years.

Native Regions in OK: 

NONE

Current and past designations: 

BS

Present in OK?

Present in Bordering States?

OK, TX, NM, CO, KS, MO, LA, AR

Has Legal Status in BS?

AR NW