Effect of different fungicide, bio agent, and botanical on yield and disease severity of potato against early blight of potato

All the treatments reduced the disease severity of Alternaria solani compared to control. Least disease severity of 12.33% was observed in T2- (ST with T. harzianum + 2 FS Tilt @ Ist at Ist disease Seen IInd at 15 days interval), followed by the T1- (ST with T. harzianum + 2 FS Bavistin @ Ist at Ist disease Seen IInd At 15 days interval) of 14.40%, T7- (ST with T. harzianum + 2 FS Zinger Extract 10% @ Ist at Ist disease Seen IInd At 15 days interval) of 42.53% showed least effective in comparison to all the treatments but was significantly superior over control (65.84%). Highest yield were recorded in T2- (ST with T. harzianum + 2 FS Tilt @ Ist at Ist disease seen IInd at 15 days interval) (455 gm/pot) and percent increase in yield 97.57%. fallowed by T1- (ST with T. harzianum + 2 FS Bavistin @ Ist at Ist disease seen IInd at 15 days interval) (405gm/pot and 75.70%), T3 and T4. Among the all treatments T2 responsible for yield increase as well as reduced disease severity in potato plants experiment.