Development of screening technique for shoot bug, Peregrinus maidis (Ashmead) in rabi sorghum

The studies on development of suitable screening technique for shoot bug. P. maidis in rabi sorghum was conducted by sowing one row of Hathi kunta variety (border crop) a week prior to sowing of four rows of M 35-1 variety. Hathi kunta as border crop recorded significantly highest shoot bug population (39.67/plant), per cent plant damage (39.95%), while resistant check, i.e. sowing of four rows of Y-75 variety without border crop recorded highest per cent panicle emergence (91.35%), whereas treatment with sowing of four rows of M 35-1 variety without border crop (Moderately susceptible check) recorded the maximum plant height (169.50 cm), grain yield (2426 kg/ha) and fodder yield (50.83 q/ha). As the sowing of main crop with border crop (highly susceptible check) a week prior to main crop recorded more population, high incidence of per cent leaf reddening in susceptible variety and lowest in resistant variety, thus it can be practiced for screening of new varieties to check resistance against shoot bug.