As the resistance of pyridaben, abamectin and other agents becomes increasingly strong, while new miticides are relatively rare, bifenazate has gradually attracted the attention of many dealers and growers in controlling red spider mites. Bifenazate has the characteristics of wide control targets, long duration, high efficiency and low toxicity, and can act on all life stages of harmful mites. Although it is not satisfactory in terms of rapid effect and price, it does not prevent it from being a good miticide product. Today, let's re-understand bifenazate with everyone.
1. About bifenazate
Bifenazate is a new type of selective foliar miticide. Bifenazate has a unique mode of action that has not yet been fully confirmed. It was originally considered to be a type of neurotoxin, which has a unique effect on the γ-aminobutyric acid (GABA) receptors of the central nervous system of mites.
Later studies showed that bifenazate acts on the mitochondria of mites and inhibits the synthesis of cytochrome bQO site complex III; some scholars also believe that bifenazate can also have a synergistic effect on GABA-gated chloride channels. Although the mode of action is still unclear, it is certain that it is only effective against mites.
2. Product Features
(1) Wide range of control targets. Bifenazate is mainly used to control harmful mites on crops such as citrus, strawberries, apples, peaches, grapes, vegetables, tea, and stone fruit trees. The control targets include two-spotted spider mites, soapberry spiders, apple spider mites, bamboo spider mites, citrus spider mites, southern small clawed mites, spruce small clawed mites, etc., but it is basically ineffective against rust mites, flat mites, and Guangming mites.
(2) It has a contact effect and no systemic effect. Bifenazate has no cross-resistance with other current miticides. It has both egg-killing activity and knockdown activity against adult mites. It is effective against all stages of harmful mites (eggs, nymphs, larvae, and adult mites). Mites can be seen dead after 36-48 hours. In the field, it can achieve an ideal control effect in 3 days. It has minimal impact on predatory mites and beneficial insects and is safe for plant growth.
(3) It is not sensitive to temperature and has a long lasting effect. Bifenazate is not affected by temperature and is not sensitive to low or high temperatures, which do not affect its effect. Therefore, its effect on mites is very stable. At the same time, the lasting effect of bifenazate is relatively long, up to 20-25 days.
3. Usage
(1) To control red spider mites on citrus trees, orange and grapefruit, rust mites, and panonychus mites, spray 1800-2500 times of 43% bifenazate suspension; to control two-spotted spider mites and red spider mites on apple and pear trees, spray 2000-4000 times of 43% bifenazate suspension; to control papaya red spider mites, spray 2000-3000 times of 43% bifenazate suspension.
(2) To control strawberry two-spotted spider mites and red spider mites, spray 2500-4000 times of 43% bifenazate suspension; to control watermelon and Hami melon two-spotted spider mites and red spider mites, spray 1800-2500 times of 43% bifenazate suspension; to control pepper tea yellow mites and red spider mites, spray 2000-3000 times of 43% bifenazate suspension; to control eggplant two-spotted spider mites and cinnabar spider mites, spray 1800-2500 times of 43% bifenazate suspension; to control flower red spider mites and yellow spider mites, spray 2000-3000 times of 43% bifenazate suspension.
(3) In use, bifenazate is often mixed with acaricides such as etoxazole, spirocyclofen, clofenazine, pyridaben, and hexythiazox, or their mixed products are used to achieve the purpose of improving rapid effectiveness, reducing resistance, and improving control effects.
Precautions
(1) When it comes to bifenthrin, many people confuse it with bifenthrin. In fact, these are two completely different products. To put it simply, bifenthrin is a special miticide (red spider), while bifenthrin also has a mite-killing effect, but it is mainly used as an insecticide (aphids, cotton bollworms, etc.).
(2) Bifenthrin has poor rapid-acting properties and is best used in advance when the insect population is small. If the insect population is large, it needs to be mixed with other rapid-acting miticides. At the same time, since bifenthrin is not systemic, in order to ensure the efficacy, it should be sprayed as evenly and comprehensively as possible.
(3) It is recommended to use bifenthrin at intervals of 20 days, and no more than 4 applications per year for a single crop. It is best to use it alternately with other miticides with other mechanisms of action. It should not be mixed with organophosphates or carbamates.
Note: Bifenthrin is highly toxic to fish. It should be used away from fish ponds and is prohibited in paddy fields.
