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International Journal of Zoology and Applied Biosciences Research Article
Weather factors responsible for the population dynamics of brown mirid bug, Creontiades biseratense Distant (Hemiptera: Miridae) in Bt cotton
P. Saravanan, A. Karthikeyan, B. Padmanaban, and A. Nagasathiya
Year : 2017 | Volume: 2 | Issue: 6 | Pages: 370-376
Received on: 11/13/2017
Revised on: 12/20/2017
Accepted on: 12/22/2017
Published on: 12/14/2017
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P. Saravanan, A. Karthikeyan, B. Padmanaban, and A. Nagasathiya( 2017).
Weather factors responsible for the population dynamics of brown mirid bug, Creontiades biseratense Distant (Hemiptera: Miridae) in Bt cotton
. International Journal of Zoology and Applied Biosciences, 2( 6), 370-376.
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Abstract
The brown mirid bug Creontiades biseratense Distant has recently emerged as a predominant pest in Bt cotton in central and southern parts of India. A study was carried out to determine the key weather parameters on the population dynamics of mirid bug C. biseratense in Bt cotton in Perambalur district of Tamil Nadu, India during 2014-2016. The study indicated that 0.64 miridbugs/plant was recorded during 37th standard metrological week of 2014-2015 with the weather parameters of maximum temperature (35.44°C), minimum temperature (25.53°C), relative humidity (71.29 %) and rainfall (49.0 mm) which increased to 4.32 mirid bugs/plant during 46th standard metrological week of 2014-2015 with the weather parameters of maximum temperature (31.7°C), minimum temperature (24.31°C), relative humidity (69.43 %) and rainfall (239.5 mm). Thereafter the population was agitated from 46th to 48th standard metrological week and attained the maximum incidence of 4.53 mirid bugs/plant during 49th standard metrological week with the weathers parameters of maximum temperature (31.07°C), minimum temperature (21.97°C), relative humidity (72.61 %) and rainfall (58.5 mm) during 2014-2015 whereas the maximum incidence of 4.476 mirid bugs/plant was recorded with the weather parameters of maximum temperature (28.71°C), minimum temperature (22.86°C), relative humidity (74.32 %) and rainfall (131.72 mm) during 46th standard meteorological week of 2015-2016. The population declined gradually from 50th and 46th standard metrological week during 2014-2015 and 2015-2016 respectively. The simple correlation studies indicated that the significant negative correlation with maximum temperature, minimum temperature and positive correlation with relative humidity and rainfall during the consecutive seasons from 2014-2016 in Bt cotton.
Keywords
Bt cotton, Mirid bug, Creontiades biseratense, Weather parameters.
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© The Author(s) 2025. This article is published by International Journal of Zoology and Applied Biosciences under the terms of the Creative Commons Attribution 4.0 International License (creativecommons.org), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
