اولین گزارش مقاومت به تری‌بنورون‌متیل در جغجغک (Vaccaria pyramidata) در مزارع گندم غرب استان کرمانشاه

Vaccaria pyramidata weed is a anual plant from the cariophylaceae family, which has been reported by farmers to be dissatisfied with its lack of control by the herbicide Teribenron Methyl in recent years As a result, it has reduced the yield and quality of the wheat crop and the losses of the farmers in the region. Accurate and timely detection of resistance plays an important role in managing resistance to herbicides and delaying it. Optimally, producers should lead agricultural production fields with proper management to delay the development of resistance to herbicides or prevent the emergence of resistant species. In order to investigate the possible resistance of Vaccaria pyramidata weed to tribenuron-methyl in wheat fields in the west of Kermanshah province, The seeds of this weed were collected in the fields suspected of resistance in the fields that were sprayed with tribenurone methyl at the end of the wheat growing season. A greenhouse study was conducted in 1401-1402 in the greenhouse of Tehran University Agricultural Natural Resources Campus in order to investigate the effect of different doses of tribenurone methyl herbicide on biotypes suspected of resistance. The results of the initial screening showed that the biotypes of Vaccaria pyramidata weed are resistant to the herbicide tribenurone methyl. In examining the response of this biotype to different herbicide concentrations, it was observed that the EC50 of the resistant biotype is 18.1 mg of active substance per liter, and their calculated Rf is 45.8..