Estimating the Infestation and Population Density of Piercing - Sucking Insects Associated with Apple Trees from Different Orchards in Erbil Province

Kadir, Nawzad Bawakir

doi:10.33899/rjs.2025.160828.1466

	Estimating the Infestation and Population Density of Piercing - Sucking Insects Associated with Apple Trees from Different Orchards in Erbil Province
Rafidain Journal of Science
Articles in Press, Accepted Manuscript, Available Online from 02 August 2025
Document Type: Review Paper
DOI: 10.33899/rjs.2025.160828.1466
Author
Nawzad Bawakir Kadir^*
Department of Plant Protection, College of Agricultural Engineering Sciences, Salahaddin University-Erbil, Iraq
Abstract
This study was conducted during 2024 to estimate the population density of piercing and sucking insects associated with apple trees from five different orchard locations (Almawan, Garota, Balisan, Hiran and Nazanin within Erbil province-Iraq. Four species of piercing and sucking insects from four families and the order Hemiptera were collected. The population density of piercing and sucking insects varied significantly depending on the species, location and environmental factors. In total, in all studied locations, the woolly apple aphid showed to be higher (45%) followed by (25%) for each of shield bug and pear lace bug while the seed bug (21%) was the lowest. Depending on the orchard location, in Garota village the insect infestations were higher (42.5%) followed by Almawan (36.25%), Hiran (35), Balisan (16.25%) and Nazanin (15%), respectively. The most infested part of trees by woolly apple aphid was the branch followed by leaf and trunk respectively. Also, the highest infestation by woolly apple aphid was at 2 meter height.
Keywords
Insect Pests; Population density; Hemiptera

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