The effect of ultraviolet rays on controlling the life roles of Trogoderma granarium

Abstract

The results of the effect of UV rays on controlling the life of the hairy grain beetle were revealed, as the lowest percentage of eggs hatching was (0.0%) within 24 hours and in time periods (5, 10, 15, 20/sec) respectively, while the highest percentage was (98.8%) within 96 hours of the treatment and consecutively from the same periods above, while the role of ultraviolet rays in controlling the second larval stage of the grain beetle was the lowest killing rate (0.0%) during 24 hours of treatment and respectively from the same periods above, while  The highest killing rate was (96.6%) within 48 hours of the treatment, and the rays showed its effectiveness on the fourth larval stage, as it reached the lowest killing rate (0.0,%) within 24 hours of the treatment and consecutively from the same periods above, while it reached (93.3%)  During 48 hours of treatment, while the lowest rate of killing for the pupal stage was (0.0%) within 24 hours and for periods (5, 10, 15, 20), respectively, while the highest killing rate was (76.6%) within 96 hours of treatment, while  The effect of the rays was clear on the whole phase of the grain beetle, and the lowest killing rate was (16.6%) within 24 hours of treatment, while the highest n  Killing rate (100%) within 48 hours of treatment.