Ismail, H., Selem, G., Hegab, O. (2016). Ecological Studies on Some Insect Pests Infesting Rosemary Plants and Their Associated Predators at Abo-Kabir District Sharkia Governorate. Journal of Plant Protection and Pathology, 7(9), 587-592. doi: 10.21608/jppp.2016.52021
Heba A. Ismail; Gamila Sh. Selem; Ola I. M. Hegab. "Ecological Studies on Some Insect Pests Infesting Rosemary Plants and Their Associated Predators at Abo-Kabir District Sharkia Governorate". Journal of Plant Protection and Pathology, 7, 9, 2016, 587-592. doi: 10.21608/jppp.2016.52021
Ismail, H., Selem, G., Hegab, O. (2016). 'Ecological Studies on Some Insect Pests Infesting Rosemary Plants and Their Associated Predators at Abo-Kabir District Sharkia Governorate', Journal of Plant Protection and Pathology, 7(9), pp. 587-592. doi: 10.21608/jppp.2016.52021
Ismail, H., Selem, G., Hegab, O. Ecological Studies on Some Insect Pests Infesting Rosemary Plants and Their Associated Predators at Abo-Kabir District Sharkia Governorate. Journal of Plant Protection and Pathology, 2016; 7(9): 587-592. doi: 10.21608/jppp.2016.52021
Ecological Studies on Some Insect Pests Infesting Rosemary Plants and Their Associated Predators at Abo-Kabir District Sharkia Governorate
1Plant Protection Res. Inst. Agric. Res. Center, Dokki, Giza, Egypt.
2Plant Protection Dept., Fac. Of Agric., Zagazig Univ., Egypt.
Abstract
The present studies were carried out to survey and evaluate the population densities of some insect pests infesting rosemary plants and their associated predators during the two successive seasons of 2013 and 2014 at Abo-Kabir district , Sharkia Governorate. The obtained results are summarized as follow : Seven insect species belonging to seven families and four orders were recorded as insect pests on rosemary plants. Bemisia tabaci (Genn.), Aphis gossypii Glover, Empoasca decipiens (Paoli) and Thrips tabaci Lind. were the most dominant species and recorded 53.95, 19.01, 13.08 and 8.14 % of the total insects numbers, respectively.Bemesiatabaci showed four peaks on 1st August , 22nd August , 19th September and 17th October in the first season and on 24th July , 21st August , 2nd October and 20th November in the second one. A.gossypii had two peaks on 1st August and 29th August in the first season and three peaks on 7th August , 4th September and 25th September in the second season .Temperature and relative humidity influenced B.tabaci populations by 4.4337 and 72.9724 % in the first and second seasons , respectively. Temperature and relative humidity affected A. gossypii population by 33.91 and 44.68 % during the two successive seasons , respectively .Five predaceous insect species belonging to five families and four orders were surveyed. Paederus alfierii (Koch), Coccinellaundecimpunctata L. and Chrysoperlacarnea (Steph.) were the most dominant species inhabiting rosemary plants and representing 52.12, 24.00 and 10.35% of the total number of predators, respectively.
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