Sorghum halepense, commonly called Johnson grass, is a plant in the grass family, Poaceae, native to the Mediterranean region, but growing throughout Europe and the Middle East. The plant has been introduced to all continents except Antarctica, and most larger islands and archipelagos. It reproduces by rhizomes and seeds.[+]
Johnsongrass has been used for forage and to stop erosion, but it is often considered a weed for the following reasons:
This species occurs in crop fields, pastures, abandoned fields, rights-of-way, forest edges, and along streambanks. It thrives in open, disturbed, rich, bottom ground, particularly in cultivated fields. Johnsongrass resistant to the common herbicide glyphosate has been found in Argentina and the United States. It is considered to be one of the ten worst weeds in the world.
It is named after an Alabama plantation owner, Colonel William Johnson, who sowed its seeds on river-bottom farm land circa 1840. The plant was already established in several US states a decade earlier, having been introduced as a prospective forage or accidentally as a seedlot contaminant.
Johnson grass (Sorghum halepense) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014 Al Wukair Street, Qatar
Seeds of Johnson grass (Sorghum halepense) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014 Al Wukair Street, Qatar
Close up of seeds of Johnson grass (Sorghum halepense) taken from Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, November 15, 2014
Grass spikelet of Sorghum halepense(?) taken from a place with water leakage in Al Luqta area. Doha, Qatar, March 13, 2015
Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016 Unnamed Road, Qatar
Spike of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016 Unnamed Road, Qatar
Close up of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016 Unnamed Road, Qatar
Spikelets of Johnson grass (Sorghum halepense)(?) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. Qatar, February 26, 2016 Unnamed Road, Qatar