الأعشاب التي تعرقل حصاد الحبوب الخريفية بالمغرب

Abstract EN

A weed survey was conductcd in May 1991 to determine the frequency of tall weeds (t 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 ngidum 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.