Effect of abiotic weather on twig damage in amla (Emblica officinalis) by Betousa stylophora


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Authors

  • M G PATEL
  • G P PATEL
  • A M SHEKH
  • J R PATEL
  • H R PATEL
  • M J PATEL

Keywords:

Betousa stylophora, population dynamics, amia, abiotic factor

Abstract

The infestation of gall forming black caterpillar, Betousa stylophora Swinhoe and 'Gujarat 1' amla (Emblica officinalis
Gaertn.) in middle Gujarat agro-climate was found during 4th week of June to 3rd week of January during 1994-95. The
siginificant negative association has been observed between B. stylophora and rainfall, wind velocity, minimum temperature,
morning and.evening vapour pressure, morning and evening relative humidity, whereas bright sunshine hours, evening
vapour pressure deficit and temperature humidity ratio showed significant positive correlation. During 1995-96 its
activity started from 4th week of July and continued till 3rd week of January. The siginificant negative association of B.
stylophora was observed with evaporation, wind velocity, maximum temperature, minimum temperature, morning and
evening vapour pressure and morning vapour pressure deficit. The path analysis showed that amongst the weather
variable morning time vapour pressure had direct significant effect on pest activity. These findings can be utilized in
forecasting and preventing the damage of B. stylophora on amla by taking recommended plant protection measures.

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Author Biographies

  • M G PATEL
    Assistant Research Scientist, Bansi Lal Amrut Lal College of Agriculture, Gujarat Agricultural University Anand Campus, Anand 388 110
  • G P PATEL
    Research Associate, Bansi Lal Amrut Lal College of Agriculture, Gujarat Agricultural University Anand Campus, Anand 388 110
  • A M SHEKH
    Professor and Head, Bansi Lal Amrut Lal College of Agriculture, Gujarat Agricultural University Anand Campus, Anand 388 110
  • J R PATEL
    Professor and Head, Bansi Lal Amrut Lal College of Agriculture, Gujarat Agricultural University Anand Campus, Anand 388 110
  • H R PATEL
     Assistant Research Scientist, Department of Meteorology, Bansi Lal Amrut Lal College of Agriculture, Gujarat Agricultural University Anand Campus, Anand 388 110
  • M J PATEL
    Senior Research Assistant, Department of Entomology,Bansi Lal Amrut Lal College of Agriculture, Gujarat Agricultural University Anand Campus, Anand 388 110

Issue

Vol. 69 No. 10 (1999)

Section

Articles

License

The copyright of the articles published in The Indian Journal of Agricultural Sciences is vested with the Indian Council of Agricultural Research, which reserves the right to enter into any agreement with any organization in India or abroad, for reprography, photocopying, storage and dissemination of information. The Council has no objection to using the material, provided the information is not being utilized for commercial purposes and wherever the information is being used, proper credit is given to ICAR.

How to Cite

PATEL, M. G., PATEL, G. P., SHEKH, A. M., PATEL, J. R., PATEL, H. R., & PATEL, M. J. (2013). Effect of abiotic weather on twig damage in amla (Emblica officinalis) by Betousa stylophora. The Indian Journal of Agricultural Sciences, 69(10). https://epubs.icar.org.in/index.php/IJAgS/article/view/27010