Indian Journal of Agricultural Research

  • Chief EditorT. Mohapatra

  • Print ISSN 0367-8245

  • Online ISSN 0976-058X

  • NAAS Rating 5.20

  • SJR 0.293

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Indian Journal of Agricultural Research, volume 48 issue 5 (october 2014) : 384-388


Monika Geroh*, Rachna Gulati, Kanika
1Department of Zoology, College of Basic Sciences and Humanities CCS Haryana Agricultural University, Hisar-125 004, India
Cite article:- Geroh* Monika, Gulati Rachna, Kanika (2023). BEAUVERIA BASSIANA (BALSAMO) VUILLEMIN (STRAIN ITCC- 4668) AS ACARICIDE AGAINST TETRANYCHUS URTICAE KOCH (ACARI: TETRANYCHIDAE). Indian Journal of Agricultural Research. 48(5): 384-388. doi: 10.5958/0976-058X.2014.01319.5.
The bioefficacy of entomopathogenic fungi Beauveria bassiana (strain ITCC- 4668) was evaluated against two spotted spider mite Tetranychus urticae Koch under field conditions. Highest reduction in T. urticae population was recorded in B. bassiana (0.3×109 conidia ml-1) treated plots (62.36 %) followed by Ethion 50 EC (0.05%) (61.97 %), B. bassiana at 0.3×108 (56.69 %) and 0.3×107 (55.59%) conidia ml-1. A significant negative correlation was found between the average number of mites and chlorophyll content (r= -0.766). In uninfected leaves higher chlorophyll content was recorded (1.016 µg/ml) as compared to mite infested leaves (0.166 µg/ml). B.bassiana treatment improved the total chlorophyll content (0.346 µg/ml), chlorophyll a (0.079 µg/ml) and chlorophyll b content (0.267µg/ml).
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