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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(7): 1578-1587
DOI: https://doi.org/10.20546/ijcmas.2019.807.188


Comparative Assessment of Biocontrol Agents (BGAs) and Chemical Insecticides on the Incidence and Management of Major Insect-Pests in Green Gram (Vigna radiata L.) in West Bengal, India
Prajna Pati* and Swarnali Battacharyya
Department of Plant Protection, Palli Siksha Bhavan, Visva Bharati, Santiniketan, West Bengal, India
*Corresponding author
Abstract:

A comparative assessment of spray efficacy of different bio-control agents such as Beauveria bassiana (Bb), Trichoderma viridae (Tv), Pseudomonas fluroscence (Pf), Verticillium lecanni (Vl), Metarhizium anisopliae (Ma) were tested in different combinations along with neem soil and chemical insecticides like imidachloprid and Acephate on major insect pest of green gram (Vigna radiata L). our results found that that, among the different treatments T-1 (Trichoderma viridae (Tv)+ Pseudomonas fluroscence (Pf)+ Beauveria basiana (Bb)+ Verticillium lecanni (Vl) sprayed @ 5g/L of water significantly reduced the population of both white fly and pod bug infestation showing significant efficacy of biocontrol agents. Minimum insect count/plant of pod bug was observed in T-1 (1.17 insect/plant). T-1 showed minimum insects per plant (1.70 insect/plant) in case of white flies. Treatment-1(T1) recorded Maximum number of branches (10.44), maximum pods per plant (32.99), maximum pod length (9.45 cm), number of seeds per plant (10.10), pod weight (20.30 g) and test weight of the seeds (10 g) when compared to untreated control which recorded least numbers as compared to treated plots. T-1 was recorded with maximum activity of Phenols (25.57mg/g of leaf tissue), chlorophyll-a (3.7457mg/g of leaf tissue), chlorophyll-b (3.84 mg/g of leaf tissue), Total chlorophyll (7.58 mg/g of leaf tissue) and total soluble sugars (46.80 mg/g of leaf tissue). The least activities of all the biochemical factors were observed in untreated control.


Keywords: Biocontrol Agents (BGAs), Insecticides, Major insect-pests, Green gram
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How to cite this article:

Prajna Pati and Swarnali Battacharyya. 2019. Comparative Assessment of Biocontrol Agents (BGAs) and Chemical Insecticides on the Incidence and Management of Major Insect-Pests in Green Gram (Vigna radiata L.) in West Bengal, India.Int.J.Curr.Microbiol.App.Sci. 8(7): 1578-1587. doi: https://doi.org/10.20546/ijcmas.2019.807.188