Effect of Different Natural Products and Neonicotinoids on the Foraging Activity of Bees on Mustard
Keywords:
<i>Apis mellifera</i>, neonicotinoids, natural products, mustardAbstract
Different natural products, azadirachtin, and neonicotinoids were evaluated for their effect on the foraging activity of Apis mellifera on mustard (Brassica juncea). The first spray was given at 50 % flowering of the crop. The findings suggested that thiamethoxam 25 WG and imidacloprid 17.8 SL treatments experienced less bee visits after 1 day of spray. After 2nd and 3rd day of spray, minimum number of bees was recorded in thiamethoxam as compared to other treatments. After 3 days of spray, there was 58.8 per cent reduction in the number of bees per 5 flowers per 5 minutes in thiamethoxam treatment. On fourth day, normal bee activity was resumed in all the treatments except thiamethoxam treated plots. In imidacloprid seed treatment, there was minimum reduction in the number of bees over untreated check.Downloads
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