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Authors: Badade, Ganesh Madhukarrao
Advisor: Nalwandikar, P. K.
Title: Foraging behaviour of honey bee on onion (Allium Cepa L.)
Publisher: Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani
Language: en
Type: Thesis
Pages: 107
Agrotags: null
Keywords: Pollen, Nectar, Umbels, Pollinator, Ecosystem
Abstract: The present investigation was carried out on foraging behaviour of honey bees on onion at Department of Agriculture Entomology, College of Agriculture, Latur during rabi 2013-14. The results obtained are summarized below. As many as 19 species of pollinators were recorded on onion out of these 10 species belong to order Hymenoptera, 4 species from Lepidoptera, 4 species from Diptera and one species from Coleoptera Among the total pollinators Apis florea was dominant constituting 62 per cent of total pollinators followed by A dorsata and Trigona spp. (28 and 4.5 %, respectively). The intensity of Apis florea. Apis indica and Trigona spp. were reached at its peak 12.00 - 14.00 hr, while Apis dorsata. Apis mellifera and other pollinator reached at its peak 14.00 - 16.00 hr. The intensity of all the bees were found to be highest at 15th day after 10 per cent flowering. The maximum time spent for pollen foraging (8.95 hr) was recorded in A. indica and minimum (6.30 hr) by Trigona spp. The number of flowers visited per minute and time of pollen and nectar foraging were minimum in case of A. mellifera. The higher numbers of seeds per umbel (700 and 699.52, respectively) were recorded in the treatment one colony Apis florea and onion+mustaid inter cropping which accounted for 24.95 and 24.86 per cent increase over PWI treatment, respectively. All the treatments produced significant increase in yield over PWI. Highest yield of 590.37 kg/ha was obtained in the treatment one colony of Apis florea which accounted for 63.99 and 50.09 per cent increase over PWI and open pollination, respectively. Thousand seed weight was significantly higher in treatments one colony of Apis florea, 4 framed colony of Apis cerana and 6 framed colony of Apis mellifera. The highest test weight was recorded in one Apis florea colony (3.78 g) which was increased over PWI and open pollination (2.95 g) and 2.98 g, respectively. The per cent seed setting was highest in one Apis florea colony being 95.23 per cent which was increased by 27.75 and 11.65 per cent than in PWI and open pollination, respectively. The per cent of seed germination is highest in one Apis florea colony (90 %) which was 15.38 and 12.50 per cent increase over PWI and open pollination, respectively.
Subject: Agricultural Entomology
These Type: M.Sc
Issue Date: 2014-05-31
Appears in Collections:Thesis

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