Efficacy of one botanical and three synthetic insecticides against silverleaf whitefly, Bemisia tabaci (Hem.: Aleyrodidae) on cucumber plants in the field

Golmohammadi, Gholamreza; Hosseini-Gharalari, Ali; Fassihi, Mohammadithaghi; Arbabtafti, Roya

doi:10.48311/jcp.2014.1152

Efficacy of one botanical and three synthetic insecticides against silverleaf whitefly, Bemisia tabaci (Hem.: Aleyrodidae) on cucumber plants in the field

10.48311/jcp.2014.1152

Volume 3, Issue 4
December 2014

Pages 435-441

Authors

G. Golmohammadi ¹

A. Hosseini-Gharalari ²

M. Fassihi ³

R. Arbabtafti ²

¹ Department of Agricultural Entomology Research, IranIan Research Institute of Plant Protection, Tehran, Iran.

² Department of Agricultural Entomology Research, Iranian Research Institute of Plant Protection, Tehran, Iran.

³ Agricultural and resource natural research, Busher province.

Abstract

The silverleaf whitefly, Bemisia tabaci (Hem.: Aleyrodidae), is a key pest of greenhouse crops. Nymphs and adults feed on plant sap and excrete honeydew, resulting in reduction of yield and quality. This pest has a high potential for developing resistant biotypes against different insecticides. Therefore, it is necessary to study the efficacy of different categories of insecticides against B. tabaci. In this research, efficacy of imidacloprid (0.5 l/ha), thiacloprid + deltamethrin (0.75 l/ha), pyrethrum (4 l/ha) andthiamethoxam + lambda-cyhalothrin (0.3 and 0.4 l/ha) with four replications were studied in a completely randomized block design in Yazd and Bushehr provinces of Iran. Mean (± SE) efficacy of imidacloprid, thiacloprid + deltamethrin, pyrethrum andthiamethoxam + lambda-cyhalothrin (0.3 and 0.4 l/ha) were 73.42 ± 3.41, 89.57 ± 2.86, 90.29 ± 2.79, 68.13 ± 3.37 and 75.62 ± 3.76% against B. tabaci nymphs 7 days after treatment in Yazd, respectively; while in Bushehr, they were 57.30 ± 3.37, 68.45 ± 4.65, 64.17 ± 2.87, 30.0 ± 4.56 and 53.0 ± 3.35%, respectively. Thiacloprid + deltamethrin, pyrethrum and thiamethoxam + lambda-cyhalothrin (at 0.4 l/ha) can be suitable candidates in IPM programs of B. tabaci.

Keywords

Bemisia tabaci

Insecticide

efficacy

Cucumber

20.1001.1.22519041.2014.3.4.4.5

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