دراسة متبقيات مبيدي الأعشاب متريبوزين (Metribuzin)‎ و فلازيفوب-بيوتيل (Fluazifop-butyl)‎ في التربة و بذور و تبن العدس

الملخص EN

Two trials were set up in Jordan in which four replicated plots of lentils (lens culinaris medik.) were treated before sowing with metribuzin at a rate of 0.5 kg a.i.

ha-1 and other four replicated plots with fluazifop-butyl at the same rate, one month after lentil emergence.

representative soil samples were randomly collected from plots of each treatment.

soil samples were tested for residues 24 hr after treatment and at harvest.

lentil seeds and straw samples were tested at harvest.

a cleanup step was conducted after extraction.

gaz chromatograph equipped with an electron capture detector was used to detect metribuzin (nitrogen/phosphorus detector in case of fluazifop-butyl).

residue levels of fluazifop-butyl and metribuzin in soil decreased from 0.493 ± 0.04 and 0.178 ± 0.019 ppm, respectively, 24 hr after treatment, to non-measurable residues (<0.01 ppm) at harvest.

lentil seeds and straw samples collected from various plots and tested at harvest contained less than the detectable limit of 0.01 ppm of fluazifop-butyl or metribuzin.

recovery tests were conducted with each group of samples tested in order to determine the efficiency of the analytical procedure.