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The biology and distribution of the parasites of the cotton stem weevil,Pempheres affinis Fst. in South India

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Proceedings / Indian Academy of Sciences

An Erratum to this article was published on 01 October 1941

Conclusion

The percentage of parasitism in cotton fields is apparently too low to exercise any adequate control ofPempheres. Their numbers are extremely insufficient for the purpose. The host-parasitic ratio is capable of being improved by artificial multiplication and timely liberation of at least one species—Spathius critolaus. Beneficial results may follow this procedure. The more promising line of action, however, is to introduce into cotton fields the parasites of its pre-economic habitat by direct importation of parasitised material as also by laboratory breeding and manipulation, should the species prove amenable in this regard. Success in this or any similar project can never be assured. Attempts in these directions are desirable.

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References

  1. Ballard, E.Mem. Dept. Agri. Ind., Ent. Ser., 1922,7, 245.

    Google Scholar 

  2. -Rep. Proc. Fourth Ent. Meet., Pusa, 1922, 24.

  3. Dharma Rajulu, R.Proc. Assoc. Eco. Biologist, 1935, 1.

  4. Fernere Ch.Bull. Ent. Res., 1939,30, 163.

    Google Scholar 

  5. Krishna Ayyar, P. N.Ind. Jour. Agric. Sci., 1940,10, 640.

    Google Scholar 

  6. —Ind. Jour. Enty., 1940,2, 79.

    Google Scholar 

  7. —, 1940,2, 97.

    Google Scholar 

  8. —Ind. Jour. Agric. Sci., 1940,10, 776.

    Google Scholar 

  9. —, 1940,10, 879.

    Google Scholar 

  10. -Proc. I. Cotton Res. Workers Conference, Bombay, 1937, 27.

  11. —Madras Agric. Jour., 1936,24, 417.

    Google Scholar 

  12. -Proc. Assn. Eco. Biol., Coimbatore, 1938, 1.

  13. —Proc. Indian Sci. Cong., Calcutta, 1938,24, 108.

    Google Scholar 

  14. —Ind. Jour. Agric. Sci., 1940,10, 901.

    Google Scholar 

  15. —Ind. Jour. Enty., 1940,2, 213.

    Google Scholar 

  16. Myers, J. G.E.M.B. Pub., No. 40, 1932.

  17. Nixon, G. E. J.Bull. Ent. Res., 1939,30, 119.

    Google Scholar 

  18. Ramakrishna Ayyar, T. V., and Mani, M. S.Records Ind. Museum, 1937,39, 125.

    Google Scholar 

  19. — and Margabandhu, V.M.A.J., 1936,24, 102.

    Google Scholar 

  20. Rosenberg, H. T.Bull. Ent. Res., 1924,34, 246.

    Google Scholar 

  21. Salt, G. —, 1931,32, 479.

    Article  Google Scholar 

  22. Thompson, W. R.E.M.B. Pub., No. 29, 1930.

Download references

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Authors and Affiliations

  1. Agricultural Research Institute, Coimbatore

    P. N. Krishna Ayyar

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  1. P. N. Krishna Ayyar
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Additional information

Communicated by Rao Bahadur V. Ramanatha Ayyar

Paper read at the Second Conference of Scientific Research Workers on Cotton in India 1941.

An erratum to this article is available at http://dx.doi.org/10.1007/BF03051146.

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Ayyar, P.N.K. The biology and distribution of the parasites of the cotton stem weevil,Pempheres affinis Fst. in South India. Proc. Indian Acad. Sci. 14, 437–453 (1941). https://doi.org/10.1007/BF03051107

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  • DOI: https://doi.org/10.1007/BF03051107

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