Effects of seed coating agents on diseases control and yield in highland barley

In order to explore the control effect of seed coating agent on barley aphids and smut,we used 350 ml of Cruiser Max (27%),450 ml of Cruiser Max(27%),350 ml of Dichlorfon (3%),450 ml of Dichlorfon (3%) and 350 ml of Weifu (40%) per 100 kilogram of seeds to treat the seeds,and used 350 ml water as a control.The results showed that the control effect of different concentrations of Cruiser Max on aphids was 84%-97%,the control effect of Cruiser Max with 450 ml·(100 kg)^-1 seed on smut reached 98.4%,and Cruiser Max with 350 ml·(100 kg)^-1 seed on plot yield increased by 15.6% compared with control.Cruiser Max seed coating agent is a potential inhibitor on barley aphids and smut,and can be widely applied in agricultural production in Tibet.