Indian Journal of Plant Protection
  • Year: 2002
  • Volume: 30
  • Issue: 1

Effect of Sowing Date on Thrips palmi Karny Population and Peanut Bud Necrosis Virus Incidence in Greengram (Vigna radiata L. Wilczek)*

  • Author:
  • M. Sreekanth, M. Sreeramulu, R D. V. J. Prasada Rao1, B. Sarath Babu1, T. Ramesh Babu
  • Total Page Count: 6
  • Page Number: 16 to 21

1National Bureau of Plant Genetic Resources-Regional Station, Rajendranagar, Hyderabad-500 030, Andhra Pradesh, India.

Department of Entomology, Acharya NG Ranga Agricultural University, Rajendranagar, Hyderabad-500 030, Andhra Pradesh, India.

* Part of the Ph.D thesis submitted by the first author to the Acharya N G Ranga Agicultural University, Rajendranagar, Hyderabad - 500 030.

Abstract

Studies on the effect of date of sowing on Thrips palmi karny population and PBNV incidence in greengram were conducted at National Bureau of Plant Genetic Resources, Regional Station, Rajendranagar, Hyderabad, Andhra Pradesh, India. Sowings were taken up in monthly intervals between Oct 2000 and Sep 2001. It could be inferred that early or timely (second fortnight of May to first fortnight of June) sowing of greengram in Kharif and late October sowing in Rabi would help in containing the thrips infestation and PBNV incidence. The usual sowing dates in rice fallows and summer sowings need not be disturbed. However, irrespective of sowing date, the maximum T. palmi population build-up coincided with the beginning of flowering stage of the crop phenology.

Keywords

Sowing date, Thrips palmi, PBNV, Vigna radiata