Pest scenario of coriander (Coriandrum sativum L.) and population dynamics in semi-arid region of Rajasthan.
In a field investigation on insect-pests scenario of coriander (Coriandrum sativum L.) in Rabi season crop were carried out in semi-arid region, stated that coriander crop received an infestation of fifteen pest species from different order and family. Three species of aphids (Hyadaphis coriandri, Aphis gossypii and Myzus persicae) and thrips (Thrips tabaci, Scirtothrips dorsalis and Frankliniella schultzei), one species each of seed wasp (Systole albipennis), seed bug (Nysius sp.), painted bug (Bagrada hilaris) and tobacco caterpillar (Spodoptera litura) were reported as a pests of major status. The insects like Empoasca sp., Bemisia tabaci, Dysdercus koenighii, Nezara viridula, Agrotis spp., Helicoverpa armigera and Hellula undalis were found as minor pests of coriander in the region. The population of aphids was maximum 137.5 aphids/plant or umbel, whereas remaining pests populations were found in ranged between 0.20 to 3.10 insects/plants or umbel.