Flight Movements and Color Preference of the Sorghum Midge123

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Abstract
Flights of Contarinia sorghicola (Coquillett) at Tifton, Georgia, were monitored with colored sticky traps on the perimeter of (1969) and coming out of (1970) a plot of sorghum. Yellow traps and white traps caught significantly more sorghum midges than orange traps or green traps. As distance from the infestation source increased, the number of sorghum midges trapped in the surrounding sorghum plots decreased significantly. Part of the population of sorghum midges did not move ill the direction of the surrounding sorghum plots, an indication of some drift during their flights after emergence.

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