Annals of Plant Protection Sciences
  • Year: 2014
  • Volume: 22
  • Issue: 1

Seasonal incidence of mites, Tetranychus urticae Koch and T. ludeni Zacher on Okra and Brinjal crops

  • Author:
  • Manoj K. Tripathi, Ashish Kumar, D.K. Srivastava1
  • Total Page Count: 4
  • Page Number: 52 to 55

1Council of Science & Technology, Lucknow – 226 019, U.P.

Department of Entomology, T.D.P.G. College, Jaunpur -222 002, India

*Email id: tripathi.manoj413@gmail.com

Online published on 7 May, 2014.

Abstract

The maximum population of Tetranychus urticae were recorded in the month of June Ist fortnight (352.50) on okra and T. ludeni (308.60) on brinjal when average atmospheric temperature was 35.53, relative humidity 33.0% and rainfall nil while minimum population of T. urticae (7.20) on okra and T. ludeni (4.20) on brinjal was recorded in Ist fortnight of March when average atmospheric temperature was 21.7, relative humidity 61.7% and rainfall 6.40mm. A positive correlation was found between temperature and mite population and negative with humidity and rainfall.

Keywords

Seasonal incidence, Tetranychus urticae, T. ludeni