How to control Aphids ？
Aphids are one of the main pests of crops, commonly known as greasy insects. They belong to the order of Homoptera, and are mainly densely populated by adults and nymphs on vegetable seedlings, tender leaves, stems and the back of leaves near the ground. The stab sucks the juice. The branches and leaves of the damaged plants are yellowed and deformed, the flower buds are damaged, the flowering period is shortened, the flower volume is reduced, and the plants wilt and die in severe cases. In addition, aphids can also transmit a variety of plant viruses, induce crop virus diseases, and cause greater losses.
Aphids are harmful all year round, their reproductive ability is very strong, and their resistance to pesticides is getting stronger and stronger, so farmers are very headaches. In addition to agricultural control, natural enemy control of aphid, yellow plate to attract aphid, silver gray film to avoid aphid and other measures, the following recommends several special drugs for the control of resistant aphids. For reference.
50% sulfluramid eye water dispersible granules
It has the characteristics of high efficiency and rapidity, and can be killed in the opposite direction (the liquid is hit on the front of the leaf, because of the strong absorption and penetration, the insects on the back of the leaf will also be killed by the medicine), and the effect is long. It can effectively control the sucking mouthpart pests that are resistant to nicotine, pyrethroid, organophosphorus and carbamate pesticides, and has special effects on aphids.
40% sulfenalazine · spinosad water
It has the effect of systemic absorption, conduction and infiltration, that is, it can fight against death. It is also effective against rice brown planthopper. Control objects include aphids, whiteflies and scale insects. The insects can be killed within 20 minutes after spraying, and the effective period can reach more than 20 days.
20% sulfenalazine · pyrimethamine
It has excellent control effect on piercing-sucking mouthparts of various crops. It has contact killing and systemic effect. In plants, it can be transported both in the xylem and in the phloem, so it can be used as a foliar spray as well as in soil treatment.
20% flonicamid water dispersible granules
In addition to the effects of contact killing and poisoning, it also has good neurotoxicity and rapid antifeeding effects. After piercing-sucking pests such as aphids eat and inhale the plant sap with flonicamid, they will be quickly prevented from sucking the sap, and no excrement will appear within 1 hour, and eventually die of starvation.
46% Fluridine Acetamiprid Water Dispersible Granules
Because its mechanism of action is different from that of conventional insecticides, it has special effects on aphids that are resistant to organophosphates, carbamates and pyrethroids. The validity period can reach more than 20 days.
40% Flonicamid·Thiamethoxam Water Dispersible Granules
For foliar spray and soil irrigation and root treatment. After spraying, it is quickly absorbed by the system and transmitted to all parts of the plant, which has a good control effect on piercing-sucking pests such as aphids, planthoppers, leafhoppers, whiteflies, etc.
Flonicamid·Dinotefuran Dispersible Oil Suspension
It has the characteristics of contact killing, stomach poisoning and strong root system absorption, lasting effect period of up to 4 to 8 weeks (theoretical lasting effect period is 43 days), wide insecticidal spectrum, etc., and has excellent control effect on piercing-sucking mouthpart pests.