POPULATION DYNAMICS OF TOMATO PIN WORM, TUTA ABSOLUTA MEYRICK (LEPIDOPTERA: GELECHIIDAE) AND SURVEY OF ASSOCIATED NATURAL ENEMIES ON TOMATO IN FAYOUM GOVERNORATE | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 9, Volume 28, Issue 1, January 2014, Page 148-155 PDF (1.02 MB) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2014.193676 | ||||
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| Authors | ||||
| A. A. Abd-El-Gayed; M. M. H. Abdella; Salwa S. B. Desoki | ||||
| Plant Protection Department, Faculty of Agriculture, Fayoum University | ||||
| Abstract | ||||
| The present work was carried out at Experimental Farm, Fac. of Agric., Fayoum Univ. and aimed to shad some a light on population fluctuations of the tomato pinworm, T. absoluta and its associated natural enemies and relation to some weather factors at Fayoum Governorate on tomato crop (Solanum lycopersicum L.) cultivated in four successive plantations during 2011/12 and 2012/13 seasons.Natural enemies associated with T. absoluta were the predator ( Atheta sp.) and 3 parasitiod hymenopteran insect species (Bracon sp, Halticoptera sp and Apanteles sp). The entomopatogenous bacteria Bacillus sp (Bacillales: Bacillaceae) was also isolated from dead and moribund larvae. In summer plantations, no larvae were observed on leaves and fruits during all season 2011. However, during the second summer season of 2012, slight infestations were recorded on tomato leaves during the farmer 4 weeks of the season and no infestations were observed on the fruits. In winter plantation: in 2011/12 the population fluctuated slightly from Nov. 2011until end of Feb 2012, one period activity was recorded from end of Feb until end of April. Fruits infestations began to appear from end of April extended to end of plantation. While in 2012/13, few larvae began to appear at mid Nov 2012, increased gradually during the successive weeks to arrive its highest on leaves at end of Feb 2013 (peak of 681 larvae /20 leaves). Fruit infestation increased slightly during the successive weeks of fruiting to arrive the highest count of larvae during the first week of March 2013 (214 larvae /20 fruits). | ||||
| Keywords | ||||
| Tuta absoluta; population dynamics; natural enemies; tomato | ||||
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