RESISTANCE OF WEEDS TO HERBICIDES IN THE GHARB REGION OF MOROCCO
ABDELKHALEK TOUAHAR *
Laboratoire de Malherbologie, U.R. de Protection des Plantes, Institute National de Recherche Agronomique (INRA), B.P. 257, Kénitra, Morocco and Laboratoire de Biodiversité et Ressources Naturelles, Département de Biologie, Faculté des Sciences, Université Ibn Tofail, B.P. 133, Kénitra, Morocco
LAHCEN ZIDANE
Laboratoire de Biodiversité et Ressources Naturelles, Département de Biologie, Faculté des Sciences, Université Ibn Tofail, B.P. 133, Kénitra, Morocco
EL HASSANE BENSELLAM
Laboratoire de Malherbologie, U.R. de Protection des Plantes, Institute National de Recherche Agronomique (INRA), B.P. 257, Kénitra, Morocco
*Author to whom correspondence should be addressed.
Abstract
A greenhouse trial was done at the National Institute for Agricultural Research Kenitra to evaluate the efficacy of tow herbicides treatments (Cossack and Topick + Printazol), on 7 weeds harvested from several emerged in the fields of the Gharb, The seeds of each weed were sown in plastic pots that were filled with 3.5 kg of soil taken from the Mnasra area of the Gharb, For each species three pots were treated with Mesosulfuron-methyl + Iodosulfuronmethyl (Cossak), In another 3 pots were treated with 2,4-D + MCPA + Clodinafop propargyl (Printazol + Topik), and 2 untreated pots (control), results showed that seedlings from germination of seeds of 7 weeds were sensitive for both treatments (Cossak) and (Printazol + Topick) except for the Lolium rigidium which gave seedlings resistant to Clodinafop propargyl (Topick).
Keywords: Weed spieces, herbicide treatments, resistance, efficiency