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Sharma, P.C.
- Effect of Different Natural Products and Neonicotinoids on the Foraging Activity of Bees on Mustard
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1 Department of Entomology, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 Beekeeping Research Station, Nagrota Bagwan, Kangra (HP), IN
1 Department of Entomology, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, IN
2 Beekeeping Research Station, Nagrota Bagwan, Kangra (HP), IN
Source
Himachal Journal of Agricultural Research, Vol 48, No 01 (2022), Pagination: 131-134Abstract
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, mustardFull Text
References
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- Relative toxicity of natural products and biopesticides against brinjal shoot and fruit borer, Leucinodes orbonalis (Guenee)
Abstract Views :168 |
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Authors
Affiliations
1 Department of Entomology, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062,, IN
1 Department of Entomology, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062,, IN
Source
Himachal Journal of Agricultural Research, Vol 48, No 2 (2022), Pagination: 266-271Abstract
The investigation was conducted to study the intrinsic toxicity of Agniastra, Brahmastra, azadirachtin, Bacillus thuringiensis, emamectin benzoate and spinosad against neonate larvae of Leucinodes orbonalis by residue film method of bioassay under laboratory conditions. The results revealed that LC value of the emamectin 50 benzoate was found to be minimum (0.0043 ppm), followed by spinosad (0.0303 ppm), Bt (3.989 ppm), azadirachtin (8.847 ppm), Brahmastra (24203.194 ppm) and Agniastra (29795.975 ppm). Almost similar trend in LC values was observed.Keywords
Toxicity, Leucinodes orbonalis, insecticides, biopesticides and natural products.Full Text
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