Radke, S.G. and Barwad, W.L. and Borle, M.N. (1978) Effect of various modern insecticides on the emerging and hibernating population of midge fly, Contarinia sorghicola Coquillet in the sorghum CSH 1 earheads. Indian Journal of Entomology, 40 (2). pp. 156-164.
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Abstract
Field-plot tests were carried out in India in 1975-76 on the effect of sprays of 7 insecticides on the emergence of adults of Contarinia sorghicola (Coq.) from the cobs of sorghum (of the variety CSH 1) and on the hibernating population in spikelets [see next abstract]. Average adult emergence was lowest following treatment with 0.04% endrin, 0.05% phosalone or 0.05% quinalphos. It was thought that lower emergence may have resulted in larger hibernating populations in the floral parts. In tests on the hibernating immature stages in sessile spikelets, 0.05% malathion resulted in the lowest percentage of empty spikelets containing larvae or pupae; 0.05% phosalone was the least harmful to parasites attacking the hibernating stages, whereas 0.04% endrin was the most harmful. Dissection of pediculate spikelets revealed that hibernating populations of larvae and pupae and their parasites were also present in these spikelets; such larvae probably survived by feeding on stamens and pollen. It was suggested that both types of spikelets should be dissected in order to obtain the best estimate of oviposition during the year
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Entomology and Zoology, Punjabrao Krishi Vidyapeeth, Akola, India |
| Subjects: | Plant Protection > Pesticides Plant Protection > Pests |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 24 May 2012 09:11 |
| Last Modified: | 24 May 2012 09:11 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5716 |
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