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Diversity and abundance of insect pollinators on Pigeon pea (Cajanus cajan L.) in Odisha condition
| Content Provider | KrishiKosh-Indian National Agricultural Research System |
|---|---|
| Advisor | Mohapatra, R. N. |
| Researcher | Padhi, Deepayana |
| Abstract | The field experiments conducted to study on “Diversity and abundance of insect pollinators on Pigeon pea (Cajanus cajan L.) in Odisha condition†during kharif, 2017-2018 undertaken at Entomology Research Station of Orissa University of Agriculture and Technology, Bhubaneswar with the objective to study the occurrence, pollinators density and effect of pollinators on yield attributes and yield of Pigeon pea. The Pigeon pea crop attracted eleven species of pollinators represented by family Apidae (45.5%), Megachilidae (36.4%) and Vespidae (18.2%) all belonging to a single order hymenoptera. Species wise diversity indicated that Megachile lanata Fab. was the most dominant one (29.1%) followed by Megachile disjuncta Fab. (20.5%), Tetragonula iridipennis Smith (14.2%), Apis cerana indica Fab. (10.95%) Megachile bicolor Fab. (10.7%), Xylocopa latipes Drury (8.5%), Megachile hera Bingham (2.1%), Eumenes spp. (1.7%), Xylocopa aestuans Lin. (1.2%), Vespa tropica Lin. (0.8%) and Apis dorsata Fab. (0.2%). All the pollinators were active during the mid flowering stage except X. latipes which was more active at the late flowering stage. At peak activity period i.e. mid flowering stage, M. lanata with 12.9 bees/m2/5 min. and at late flowering stage, X. latipes with 5.2 bees/m2/5 min. outnumbered the other pollinators. Among the species M. lanata spent maximum time (10.3 sec) on a flower followed by M. disjuncta (9.8 sec), X. latipes (8.2 sec), M. bicolor (7.7 sec), A. c. indica (6.7 sec), T. iridipennis (5.6 sec), X. aestuans (3.2 sec), Wasp Eumenes spp. (2.2 sec) and M. hera (1.4 sec). The time spent by the bees was more at 10:00 a.m. (6.7 sec) followed by at 01:00 p.m. (6.4 sec) and at 07:00 a.m. (3.4 sec). However at 05:00 p.m. no pollinators were recorded to spend time in flowers. The pollinators play significant role in enhancing the yield( 32.3%), number of pods per plant (27.5%), 1000 seed weight (4.4%), seed yield per ten plants (23.5%) and seed germination (21.5%) over the crop grown under pollination exclusion conditions. It is inferred from the present investigation that Pigeon pea is an ideal crop supporting an array of pollinators, most important being the M. lanata and also contributed to increase in yield. |
| Page Count | 85 |
| File Size | 3296348 |
| File Format | |
| Language | English |
| Publisher | Ouat |
| Access Restriction | Open |
| Subject Keyword | Diversity Abundance Insect Pollinators Pigeon Pea Odisha The Method of Identifying How The Diversity and Abundance of Insect Pollinators On Pigeon Pea (cajanus Cajan L.) In Odisha Condition Agricultural Entomology Insect Pollinators On Pigeon Pea |
| Content Type | Text |
| Educational Degree | Master of Science (M.Sc.) |
| Resource Type | Thesis |
