For eggs, young mites, nymphs
Tetramethazine: tetragonide acaricide, embryonic development inhibitor, does not feel warm, mainly kills mite eggs, also has a certain effect on young mites, ineffective against adult mites. It has a special effect on apple red spiders, with a long duration, but the effect comes slowly, has no effect on predatory mites and beneficial insects, and is used for apples, ornamental plants and citrus, cotton, etc., and is applied once before and after the flowering period.
Spironoster: has a tactile effect and has no systemic properties. It mainly inhibits the fat synthesis of mites, blocks the energy metabolism of mites, has a good killing effect on mites and mites, has a certain egg killing effect, is ineffective against adult mites, but has the effect of inhibiting the hatching rate of female mites. The disadvantage is that the temperature is felt, the effect is not ideal at low temperatures, the effect is slow, but the effect period is long, and it is one of the mainstream acaricides at present. However, many small manufacturers use it as an invisible ingredient, resulting in a very rapid rise in resistance, which requires compounding to achieve the ideal mite killing effect.
Eccladiazole: relatively new compounds, mainly egg killing and juvenile mites, inhibiting the embryonic formation of mite eggs and the molting process from young mites to adult mites, are ineffective against adult mites, but have a good sterile effect on female adult mites, so its best control time is the initial stage of pest mite harm. Strong rain resistance, slow effect, long-lasting period of up to 50 days, and low toxicity, friendly to the environment, is currently an essential acaricide, usually used as an egg killing drug.
For mites, mites
Phentermine: it belongs to the touch-killing type long-acting special acaricide, which is effective against red spiders and rust ticks, and the effect of other mites is not ideal. The lethality of adult mites is large, the medicinal effect is poor when the temperature is lower than 22 ° C, and the medicinal effect can be fully exerted when using high temperature, and the effect period is long, and it is safer for natural enemies. The disadvantage is that it is easy to cause drug damage, especially at high temperatures above 32 ° C, there is a greater risk of drug harm to young shoots and young fruits, it is recommended to try to single, do not mix with pesticides of emulsion dosage forms.
Alkyne mite: is an organic sulfur acaricide, with contact killing and gastric toxicity, no systemic and osmotic conduction effect, effective against red spiders, rust ticks, other mites are not ideal. The main killing of mites, if mites, the effect of egg killing is poor. The duration of action is short, and the temperature is felt, the medicinal effect is discounted at a temperature below 20 °C, and the temperature is lower than 14 °C. It is best not to choose. Quick-acting is very good, there is not much resistance, high temperature has a risk of medicinal harm to young fruits, easy to flower skin, therefore, only suitable for fruit picking after the garden, spring shoots sprouts, into the autumn after use.
Avermectin: stimulates the release of r-aminobutyric acid through the transmission medium of the mind, interferes with normal neurophysiological activities, after adult mites and nymph poisoning, paralysis, inactivity, cessation of feeding, death after 2-3 days. It has gastric toxicity and touch killing effect on mites, and has a weak fumigation effect, no systemic absorption, but has a strong osmotic effect on leaves, a long effective period, and cannot kill eggs. Fast-acting, no residue, is the summer safe acaricide compound of the first choice of synergistic drugs, the disadvantage is large resistance, currently suitable for 5% active ingredient preparations.
For the entire reproductive stage from egg to adult mite
Azole mite ester: Azole mite ester is a pyrazole acaricide, which is mainly a contact killing mode, with a wide spectrum of mites and both insecticidal effects. There are two kinds of e-body and z-body, the e-body mite killing activity is high, and the speed of mite killing is fast. It is suitable for the control of red leaf mites, rust ticks and full-clawed leaf mites on a variety of plants, and also has a good control effect on pests such as cabbage moth, twill noctus moth, dimorph borer, rice planthopper, peach aphid and so on. The main killing of mites and young mites, the egg killing effect is not good, the killing speed is slow, and the killing rate is not high, suitable for use after the flower.
Pyridoxine: Is a broad-spectrum, tactile acaricide that can be used to control a variety of plant-eating pest mites. It has a good effect on the entire growth period of mites, namely eggs, young mites, nymphs and adult mites, and also has a significant rapid killing effect on adult mites during the mobile period. The drug is not affected by temperature changes, whether used in early spring or autumn, satisfactory results can be achieved. And the quick-acting and the duration of the effect are moderate, the performance is comprehensive and safe, the cost performance is higher, the only drawback is that the ingredients are older, the resistance is larger, and it is recommended to use it when the spring shoots sprout.
Biphenylhydrazide: A novel selective acaricide that only works against red spiders and their close relatives. Effective against mites at all stages of life, the mites stop eating, exercising and laying eggs within 2 hours after exposure to the agent, and die within 48-72 hours. For adult mites, young mites, and mites, the killing rate is high, and the egg killing effect is not good. Beneficial biosecurity for bees, fluttering mites and so on. Insensitive to temperature, it can be used in all seasons, and is currently the preferred drug for mite killing, the price is slightly more expensive, and the compound egg killing ingredient is more effective.
There are many varieties of acaricides, each ingredient has its own unique activity and application conditions, mineral oil, thiamine, tetazolamide and other ingredients will be left for you to discuss.