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Influence of Different Dates of Sowing and Indigenous Bee Attractants on Bee pollination and Niger Yield

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Title Influence of Different Dates of Sowing and Indigenous Bee Attractants on Bee pollination and Niger Yield
 
Creator Fakkiresh Muddi
 
Contributor Shashidhar Viraktamath
 
Subject Agricultural Entomology
 
Description Investigations on the pollinator fauna and their relative abundance at different
dates of sowing, influence of different dates of sowing and indigenous bee attractants
on honey bee visitation and yield parameters of niger were carried out at the Main
Agricultural Research Station of the University of Agricultural Sciences, Dharwad
during kharif 2011.
Pollinator fauna of niger included 21 species of insect pollinators,
predominantly Hymenoptera, Diptera and Lepidoptera. Apis florea was the most
dominant pollinator (45.93%) followed by A. dorsata (26.545%) and A. cerana
(16.512%) in all the dates of sowing.
Crop sown on 3rd July recorded highest number of bee visits (5.92 bees/10
flowers/minute), number of capitula per plant (50.11 capitula/plant), and yield (95
kg/ha) compared to other dates of sowing (7th, 20th June and 8th July). Date of sowing
had no effect on germination percentage, shoot length, root length and vigour index.
Similarly no significant differences were found in caged plots.
Bee attractants viz., Fruit boost, citral Z, Citral E, Swertia densifolia leaf
extract, Fagara budrunga fruit extract, tuberose floral scented water and cinnamon
leaf extract significantly attracted more bees.
Though Fruit boost sprayed crop recorded highest yield (1.43 q/ ha)
indigenous bee attractants Citral Z and Citral E were the second best treatments in
increasing yields (1.16 and 1.08 q/ ha) followed by S. densifolia, F. budrunga,
tuberose and cinnamon (0.88 to 0.92 q/ ha). Fruit boost had higher vigour index
(1200.82) followed by indigenous bee attractants (1149.66 to 926.03).
 
Date 2016-11-21T17:15:51Z
2016-11-21T17:15:51Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/86782
 
Format application/pdf
 
Publisher UAS, Dharwad