Efficacy of some acaricides against the two-spotted spider mite Tetranychus urticae on cucumber greenhouses | ||
| Journal of Crop Protection | ||
| Article 8, Volume 13, Issue 3, 2024, Pages 311-319 PDF (377.98 K) | ||
| Document Type: Original Research | ||
| DOI: 10.48311/jcp.2024.1674 | ||
| Authors | ||
| Nayereh Hamedi1; Azade Farazmand2; Peyman Namvar3; Vahid Farhangi* 4 | ||
| 1Agricultural and Natural Resource Research and Education Center of Khuzestan Province, Tehran, Iran. | ||
| 2Department of Agricultural Zoology, Iranian Research Institute of Plant Protection, Agricultural Research Education and Extension Organization (AREEO), Tehran, Iran. | ||
| 3Entomology Research Department, Agriculture and Natural Resources Research Center, Jiroft, Kerman, Iran. | ||
| 4Plant Protection Research Department, Qazvin Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), Qazvin, Iran. | ||
| Abstract | ||
| Tetranychus urticae Koch is one of the most important vegetable pests in greenhouses. Due to the high reproduction rate and rapid development, T. urticae has a propensity for developing resistance to many classes of pesticides. One method for delaying the occurrence of pest resistance is the application of pesticides with different modes of action. The present research was performed to compare the efficacy of some acaricides against this notorious worldwide pest. The treatments were bifenazite (Kanecide 24% SC at 200 and 300 ppm), spirodiclofen + abamectin (Envidorspeed® 24% SC, 500 ppm), spiromesifen (Oberon® 24% SC, 500 ppm), bromopropylate (Neoron® 25% EC, 1500 ppm), and control (water spraying) based on randomized complete block design with three replications during the summer of 2018 in three provinces of Iran. To determine the spraying time, 30 leaves were collected randomly from each treatment, and if there were an average of 5 active mites under leaves, spraying was done. After spraying, sampling was performed in 3, 7, 14, and 21-day intervals by collecting 30 leaves from each experimental unit. In the laboratory, different developmental stages were recorded using a stereomicroscope. Results showed that the highest efficiency was on the 7 and 14 days after spraying with Envidorspeed® 500 ppm in all provinces. However, this difference wasn't significant in Tehran. In Kerman, Kanecide® 200 ppm, with an efficiency of 94.3% after 21 days, and Envidorspeed® 500 ppm, with an efficiency of 96.19% after 14 days, were the most effective chemicals. Results of these three provinces demonstrated that the efficiency of all five treatments after 14 days was more than 72%. The main purpose of this experiment is to compare the efficiency of these acaricides. All of them provided significant control in the greenhouse, and it could be recommended for population management of T. urticae. However, Envirospeed® in Tehran and Qazvin, as well as Envidorspeed® and Kanecide® in Kerman, are more suggestible based on mortality. | ||
| Keywords | ||
| Tetranychus urticae; bifenazate; Spirodiclofen; abamectin; spiromesifen; bromopropylate | ||
| References | ||
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