Features of Spirodiclofen
1. New Structure and Unique Mechanism of Action: The active ingredient in Spirodiclofen is spiroketone acaricide, which works by inhibiting the synthesis of fats in harmful mites. It shows no cross-resistance with existing acaricides, making it suitable for controlling mite pests that have developed resistance to traditional acaricides.
2. Broad Acaricidal Spectrum and Strong Adaptability: Spirodiclofen is effective against various pests such as red spider mites, yellow spider mites, rust mites, tea yellow mites, and two-spotted spider mites. It can be used for mite control in fruit trees like citrus and grapes, as well as solanaceous crops like eggplants, peppers, and tomatoes. Additionally, Spirodiclofen has good control effectiveness against other pests like pear woodlice, elm scale insects, and leafhoppers.
3. Effective Against Eggs and Nymphs: It has particularly excellent ovicidal effects, and it also has good contact activity against young mites. Although Spirodiclofen cannot quickly kill adult female mites, it has a strong sterilizing effect on them. Eggs laid by treated female mites show a 96% failure rate in hatching, dying in the late embryonic stage.
4. Long Residual Effect: The residual effect of Spirodiclofen is long-lasting, controlling the damage from certain mites on citrus for 40 to 50 days. Once applied to crop leaves, it withstands rain washout; encountering moderate rain two hours after application does not affect the efficacy of the treatment.
5. Low Toxicity, Low Residue, and Good Safety: Spirodiclofen is very safe for crops under various temperature conditions and poses low toxicity to humans and livestock. It is suitable for pollution-free production.
6. No Cross-Resistance: It can be mixed and used with most pesticides (excluding strongly alkaline pesticides and copper-based formulations). Mixing with acaricides that have different mechanisms of action can enhance the prompt effectiveness of Spirodiclofen and help manage resistance in mite populations.
Product Details of Spirodiclofen
| Product name | Spirodiclofen |
| Tech grade | 98%TC |
| Formulation | 24%SC |
| Molecular formula | C21h24cl2o4 |
| CAS No. | 148477-71-8 |
| EINECS No. | 604-636-5 |
| Shelf life | 2 Years |
Application
1. Even Spray: This product controls harmful mites’ eggs, nymphs, and adult females through contact action and has no systemic activity. Therefore, when diluting the product with water for spraying, it is important to apply it as evenly as possible to ensure that the solution reaches both the upper and lower surfaces of the leaves and the surfaces of the fruits, maximizing its efficacy.
2. Application Timing: To control the citrus red mite, it is recommended to apply the treatment before the harmful mites reach a damaging level, thereby fully utilizing the prolonged efficacy of Spiromesifen.
2.1. Spring Application Plan 1: When the damage caused by red spider mites and yellow spider mites reaches the control threshold (with 10 eggs or 3-4 nymphs per leaf), use 34% Spirodiclofen suspension diluted to 4000-5000 times (100 ml per 800-1000 Jin of water) for even spraying. This can control red spider mites and yellow spider mites for about 50 days. If the mite population rises again afterward, a fast-acting acaricide (such as Abamectin, Fenpyroximate, or others) can be used once.
2.2. Spring Application Plan 2: If red spider mites and yellow spider mites occur early and reach the control threshold, first use fast-acting acaricides (such as Abamectin, Fenpyroximate, or others) 1-2 times, and around early May, apply the 34% Spirodiclofen suspension diluted to 4000-5000 times (100 ml per 800-1000 Jin of water) for a single spray. This will control red spider mites and yellow spider mites for about 50 days.
2.3. Fall Application: In September and October, when the pest populations of red spider mites and yellow spider mites rise and reach the control threshold, another application of the 34% Spirodiclofen suspension diluted to 4000-5000 times may be made, or it can be mixed with other pesticides according to the severity of the mite infestation. This can control the pests until the citrus harvest and through to winter cleaning.
3. Number of Applications: It is best to apply Spirodiclofen only once during the growing season of citrus. Rotating its use with other acaricides that have different mechanisms of action can effectively control resistant spider mites while reducing the risk of leaf mites developing resistance to Spirodiclofen.
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