Efficacy of Microbials as Insecticides for the Management of Tomato (Lycopersicon esculentum) Fruitworm, Helicoverpa armigera (Hubner)

Authors

  • AKMZ Rahman Entomology Division, Bangladesh Agricultural Research Institute, Gazipur-1701
  • MA Haque Department of Entomology, Bangladesh Agricultural University, Mymensingh
  • SN Alam Entomology Division, Bangladesh Agricultural Research Institute, Gazipur-1701
  • NK Dutta Entomology Division, Bangladesh Agricultural Research Institute, Gazipur-1701

Keywords:

<i>Helicoverpa armigera</i>, tomato, microbial

Abstract

The experiment was conducted at the experimental field of Entomology Division, BARI, Gazipur during Rabi 2007-08. Two microbial insecticides HaNPV @ 0.4ml/L and Bt @ 2g/L along with their combination were tested against H. armigera. The lowest fruit infestation, both in number and weight, was obtained from treatment HaNPV and Bt alternate spraying (11.78%, 9.64%), followed by Bt (13.25%, 10.85%) and HaNPV (17.67%, 13.11%). The highest fruit yield (16.92 t/ha) was obtained from HaNPV and Bt alternate spraying plots followed by Bt (16.65 t/ha) and HaNPV (14.73 t/ha). In case of MBCR, the highest MBCR was obtained from HaNPV and Bt alternate spraying (5.30) followed by HaNPV (4.46) and Bt (3.37).

DOI: http://dx.doi.org/10.3329/agric.v12i1.19583

The Agriculturists 2014; 12(1) 68-74
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Published

2014-07-19

How to Cite

Efficacy of Microbials as Insecticides for the Management of Tomato (Lycopersicon esculentum) Fruitworm, Helicoverpa armigera (Hubner). (2014). The Agriculturists, 12(1), 68-74. https://doi.org/10.3329/agric.v12i1.19583

Issue

Vol. 12 No. 1 (2014)

Section

Articles

How to Cite

Efficacy of Microbials as Insecticides for the Management of Tomato (Lycopersicon esculentum) Fruitworm, Helicoverpa armigera (Hubner). (2014). The Agriculturists, 12(1), 68-74. https://doi.org/10.3329/agric.v12i1.19583