Diversity of insect and acarine fauna associated with marigold in northern and eastern parts of India
Surveys were carried out during the rabi seasons of 2016-18 to enlist the insect and mite fauna associated with marigold in the four regions of northern and eastern parts of India viz., Varanasi of Uttar Pradesh; Chiplima of Sambalpur district, Odisha; Balichak of Paschim Medinipur district and Pundibari of Coochbehar district of West Bengal. Insects belonging to ten orders were recorded and they were either phytophagous viz., Lepidoptera, Diptera, Thysanoptera, Hemiptera and Orthoptera or predatory viz., Coleoptera, Neuroptera, Odonata and Dictyoptera or were pollinating the crop viz., Hymenoptera, Lepidoptera and Diptera. Amongst the pests, aphids (Lipaphis erysimi Kalt. and Myzuspersicae (Sulz.)) were observed as major pests astheir damage were more thanl0 per cent. Other pests like thrips (Thrips tabaci Lindeman), gram pod borer (Helicoverpa armigera (HUbner), serpentine leaf miner (Liriomyza spp.), mealybug (Phenacoccus solenopsis Tinsley), painted bug (Nezara viridula (Linnaeus), cowbug (Tricentrus bicolor Distant), Lygus bugs, red spider mite (Tetranychus urticae Koch) etc. were recorded as minor pests of this economically important ornamental crop. This paper envisages the insects and acarines associated with this crop comprehensively from these regions.
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