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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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Original Research Articles

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 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(7): 1668-1677
DOI: https://doi.org/10.20546/ijcmas.2019.807.198


Effect of Sublethal Concentrations of Insecticides on the Larval and Pupal Duration of S. litura under eCO2 and eTemp Conditions
K. Deekshita1*, P.V. Krishnayya1, M. Srinivasa Rao2, P. Anil Kumar1 and S. Nafeez Umar1*
1Acharya N.G. Ranga Agricultural University, Agricultural College, Bapatla 522 101, India
2ICAR - Central Research Institute for Dryland Agriculture, Santhosh nagar, Hyderabad 500 059, India
*Corresponding author
Abstract:

Experiment was conducted to study the effect of eCO2 and eTemp on the on the larval and pupal developmental periods of S. litura after exposed to sublethal concentrations of insecticide viz., spinosad, emamectin benzoate, thiodicarb and monocrotophos. Among these insecticides emamectin, thiodicarb and monocrotophos was positively related with temperature and proved effective at higher temperatures, whereas spinosad was negatively related with temperature. The test insecticides prolonged the larval and pupal durations with increase in sublethal concentrations. But in contrats with increase in temperature from 28 to 35 ºC under both aCO2 (380 ± 25 ppm) and eCO2 (550 ± 25 ppm), the larval and pupal durations were decreased significantly. Negatively correlated with temperatures exhibited reduced efficacy at higher temperatures which results in higher lethal concentrations, this might be reason for prolonged larval durations at higher temperatures


Keywords: Sublethal concentrations, Larval duration, Pupal duration, Insecticides
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How to cite this article:

Deekshita, K., P.V. Krishnayya, M. Srinivasa Rao, P. Anil Kumar and Nafeez Umar, S. 2019. Effect of Sublethal Concentrations of Insecticides on the Larval and Pupal Duration of S. litura under eCO2 and eTemp Conditions.Int.J.Curr.Microbiol.App.Sci. 8(7): 1668-1677. doi: https://doi.org/10.20546/ijcmas.2019.807.198