[A survey of weeds interfering with mechanical harvesting of small grain cereals in Morocco]
1997
Tanji, A.
A weed survey was conducted in May 1991 to determine the frequency of tall weeds ( 20 cm in height) in 100 fields of mature barley, bread wheat, durum wheat, and oat. These fields were located in the three major cereal producing provinces of El Jadida, Safi and Settat, Morocco. such weeds interfere with harvesting and contaminate crop seeds with weed seeds. Of the 93 species identified, 84 species were broadleaf weeds. Melilotus sulcatus Desf., Papaver rhoeas L., and Vicia sativa L. were present in 55, 48 and 40, of the surveyed fields, respectively. Avena sterilis L., Lolium rigidum Gaud., and Bromus rigidus Roth. were found in 43, 37 and 25 of the fields, respectively. Weed management in small grain cereals in surveyed provinces should focus on annual grass and broadleaf weeds
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