Volume 13, Issue 1 (2024)
JCP 2024, 13(1): 29-43 |
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Molavi A, Iranipour S, Hejazi M J, Lotfalizadeh H. Lower doses of acetamiprid reduce the intensity of Aphis pomi (Hem., Aphididae) and benefit their dominant predator Hippodamia variegata. JCP 2024; 13 (1) :29-43
URL: http://jcp.modares.ac.ir/article-3-70507-en.html
URL: http://jcp.modares.ac.ir/article-3-70507-en.html
1- Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
2- Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran. ,shiranipour@tabrizu.ac.ir
3- East Azarbaijan Agricultural and Natural Resources Research & Education Center, AREEO, Tabriz, Iran.
2- Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran. ,
3- East Azarbaijan Agricultural and Natural Resources Research & Education Center, AREEO, Tabriz, Iran.
Abstract: (264 Views)
A few species of aphids are widespread and economically important in Iran's apple orchards. In this study, we looked for economical, environmentally friendly, and efficient management of aphids with particular emphasis on green apple aphid (GAA) Aphis pomi (de Geer). We aimed to avoid early-season pesticide applications, avoiding specific applications for aphid control and managing them via applications done against codling moth (CM), Cydia pomonella L., choosing suitable insecticide and dose to minimize side effects on prevalent natural enemies. Thus, CM was monitored by pheromone traps from mid-March in an apple orchard of the Agricultural Research Station of the University of Tabriz to determine the time of application based on degree days accumulated from a biofix. The number of GAA, rosy apple aphid (RAA), Dysaphis plantaginea Passerini, and their natural enemies were counted separately. It is known that GAA is the predominant aphid, and two species of ladybirds, Coccinella septempunctata (L.), and Hippodamia variegata (Goeze), are dominant species of the region. Acetamiprid was chosen as an effective insecticide against both CM and aphids. The lethal effects of this compound were studied on different stages of H. variegata and the last instar GAA. The orchard was divided into four plots, and each plot was assigned to a treatment including control, label dose (LD), ½ LD, and ¼ LD. Although LD killed 10% more GAA than ¼ LD, the damage intensity was 12-16% higher in the former. Considering economic benefits and reducing side effects on natural enemies, we recommend using ¼ LD of acetamiprid.
Article Type: Original Research |
Subject:
Insect Physiology
Received: 2023/07/14 | Accepted: 2024/01/1 | Published: 2024/08/25
Received: 2023/07/14 | Accepted: 2024/01/1 | Published: 2024/08/25
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