Himachal Journal of Agricultural Research

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Effect of Different Natural Products and Neonicotinoids on the Foraging Activity of Bees on Mustard


Affiliations
1 Department of Entomology, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India
2 Beekeeping Research Station, Nagrota Bagwan, Kangra (HP), India
 

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.

Keywords

Apis mellifera, neonicotinoids, natural products, mustard
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  • Effect of Different Natural Products and Neonicotinoids on the Foraging Activity of Bees on Mustard

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Authors

Davinder Kumar
Department of Entomology, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India
P.C. Sharma
Department of Entomology, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, India
Surender K. Sharma
Beekeeping Research Station, Nagrota Bagwan, Kangra (HP), India

Abstract


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.

Keywords


Apis mellifera, neonicotinoids, natural products, mustard

References