RESEARCH ON REGLONE AND GRAMOXONE RESIDUES IN CEREALS IN GHARB REGION
ABDELKHALEK TOUAHAR *
Laboratoire de Malherbologie, U.R. de Protection des Plantes, Institut 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, Institut National de Recherche Agronomique (INRA), B.P. 257, Kénitra, Morocco.
*Author to whom correspondence should be addressed.
Abstract
In the experimental station Allal Tazi (INRA Kenitra), located in the Gharb region, 44 km north of Kenitra we treated two plots of durum wheat of 100 m2 with 2 herbicides paraquat (gramoxone) and diquat (reglone) and we left a third one without treatment (control plot), at harvest time we took 3 samples per plot of our mature wheat and we brought it back to the laboratory after an extraction and purification step, An aliquot was filtered through a syringe filter (0.45uM) and then transferred to a polypropylene vial and analyzed directly by LC-MS for residues of 2 herbicides used in the straw and seed of the harvested wheat, the results showed the absence of these 2 active ingredients in our samples.
Keywords: Herbicide, residues, mass spectrometry, high performance liquid chromatography, wheat, wheat straw