بررسی برهمکنش تاریخ کاشت و رقم بر درصد وقوع و شدت بیماری کپک صورتی گندم در استان گلستان

The aim of this experiment was to investigate the effect of planting date, cultivar and their interaction on pink mold of wheat(Microdochom nivale) in Golestan province, an experiment was conducted in the agricultural year 2015-2016 in Gorgan Agricultural Research Station. Experimental factors include planting date in 5 levels (including 23 October, 11 November, 1 December, 21 December, 10 January) and cultivar in 5 levels (Gonbad, Morvarid, N-87-20, N-91-8 and N -91-9) was. In this experiment, incidence percentage and percentage of severity of pink mold in wheat were measured. The results of this experiment showed that the effect of planting date, cultivar and the interaction effect of planting date and cultivar on the incidence and severity of pink mold in wheat was significant at the level of 1% probability. The results of comparing the mean interaction of planting date and cultivar on the incidence and severity showed that only on the planting date of 23 October and only in cultivar N-87-20, the incidence and severity of pink mold (percentage of disease incidence and severity) Pink mold on the date of planting on 23 October was equal to 7 and 2%, respectively). At other planting dates in all cultivars, the incidence and severity of pink mold disease was zero. The results of this experiment showed that by choosing the appropriate cultivar and planting date, it is possible to prevent the occurrence of pink mold disease of wheat and control this important disease. So that with the planting of wheat cultivars studied in this experiment on 11 November, 1 December, 21 December, 10 January, the percentage of pink mold diseases will be zero. Also, in the planting date of 23 October, in all cultivars except N-87-20 cultivar, the incidence and severity of pink mold disease was zero.