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<p style="text-align:justify"><span style="font-size:16px">Field experiment on seasonal incidence of mealy bug species of cotton was conducted in Coimbatore, Tamil Nadu Agricultural University during 2016-2017. Results showed four mealy bug species such as <em>Phenacoccus solenopsis </em>(Tinsley), <em>Maconellicoccus hirsutus</em> (Green), <em>Ferrisia virgata</em> (Cockerell) and <em>Paracoccus marginatus</em> (Williams & Granara de Willink). Among them, peak population of <em>Phenacoccus solenopsis </em>(400.75 insects/plant) was recorded in October, that decreased slowly during January (100.6 insects/plant) and there was least population during February - March. Correlation analysis between weather parameters and mealy bug activity indicated positive correlation with maximum temperature, minimum temperature, relative humidity and negative correlation with rainy days. The major parasitoids found attacking mealybugs in the experimental field were; <em>Aenasius arizonensis</em> Girault, <em>Promuscidea unfasciati </em>Girault and <em>Acerophagus papayae </em>Noyes & Schauff. The assessment of mealybug population and the level of parasitization of the three parasitoids were carried out based on the adult emergence from the sampled parasitized mealybugs. The parasitism of mealy bug by <em>Aenasius arizonensis </em>was the highest in October which decreased gradually during January with the decrease in mealy bug population.</span></p>
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<p style="text-align:justify"><span style="font-size:16px"><strong>S. Thangavel<sup>*</sup></strong></span></p> <p style="text-align:justify"><span style="font-size:16px"><em>Department of Agricultural Entomology, B.A. College of Agriculture, Anand Agricultural University, Anand, Gujarat, India – 388 110</em></span></p> <p style="text-align:justify"><span style="font-size:16px"><strong>N. Ganapathy</strong></span></p> <p style="text-align:justify"><span style="font-size:16px"><em>Department of Entomology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India - 641 003</em></span></p>
How to cite
<p style="margin-right:2px; text-align:justify"><span style="font-size:14px">Thangavel<sup>, </sup>S. and Ganapathy, N. 2019. Seasonal incidence of mealy bug species and their major parasitoids on cotton (<em>Gossypium sp. </em>L<em>.</em>) in Coimbatore, Tamil Nadu. <em>Innovative Farming</em>, 4(1): 30-31.</span></p>
Reference
<p style="text-align:justify"><span style="font-size:16px">Gupta, G.P. 2001. Alternate strategies for IPM in major crops. ICAR - IARI, New Delhi, June 11 – July 5: 232-236. </span></p> <p style="text-align:justify"><span style="font-size:16px">Gomez, R.A. and A.A., Gomez, 1984. Statistical Procedures for Agricultural Research. Inter Science Publications, John Wiley and Sons, IRRI, The Philippines. 680p.</span></p> <p style="text-align:justify"><span style="font-size:16px">Suresh, S. and P. Chandrakavitha. 2008. Seasonal incidence of economically important coccid pests in Tamil Nadu. In: <em>Proceedings of the XI International Symposium on Scale Insect Studies</em>, Oeiras, Portugal, 24-27<sup>th</sup> Sept. 2007.</span></p>
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