- May 16, 2018 -
Q: How is the drug used in the later stage of rice production?
A: For the time being, the drug is the most active product for rice planthoppers. Its potency is much longer than that of organophosphorus, pyrethroids, and buprofezin. Its fast-acting effect is higher than that of nicotine pesticides. Imidacloprid, Acetamiprid, Chlorothiophene, etc. The overall performance is significantly higher than imidacloprid, acetamiprid, buprofezinone, insecticide, etc., higher than pystradiol and other new agents.
For specific applications, poor performance during rice maturation is not due to pharmacological or resistance reasons, but mainly due to reasons for use. During rice maturity, the flag leaf loses its absorption function and the drug cannot be conducted downward. The drug does not have a fumigation effect. The solid spray should be sprayed down and aligned with the base target spray. In order to improve the insecticidal effect, rice fumigation with better organic phosphorus, such as DDV and chlorpyrifos, can be formulated during rice maturity.
Q: When nitenpyram prevents rice planthoppers, does it have a repellent effect on rice planthoppers? How long is the control effect on rice planthoppers? ?
A: The drug is a systemic product that can remain in the rice body for more than 35 days. The effective period of up to 20 days or more. Experiments show that the reduction rate of rice planthoppers at 20 days is 99.999%. Therefore, although the drug has no evasion effect, it can still effectively prevent and prevent the migration of rice planthoppers.
Q: Is nitenpyram safe for all crops, especially on vegetables, and how do you look at fenthrin and pymetrozine?
A: The drug is a new type of nicotinic pesticide. Currently, there are no reports of phytotoxicity of nicotine pesticides in the world. Therefore, the drug is used in non-reconstituted conditions, whether it is used in vegetables or other crops. safe. Etofenprox has contact and stomach toxicity and is suitable for the control of rice, vegetables, cotton, lepidopteran, hemiptera, orthoptera, coleoptera, diptera, and isoptera. Prevention of rice planthoppers, with 10% EC per acre 40-60ml. Pymetrozine has selective activity against sucking insect pests of the order Homoptera. It is a non-invasive new insecticide. It has a unique mode of action and its action is characterized by inhibition of the central nervous system of feeding behavior. It regulates the central nervous system through fluid absorption. And interfere with normal feeding activities. This agent has a leaf conduction epidemic. Can be used to control most of the sucking mouthparts of the Homoptera pests, especially the locusts, whiteflies, leafhoppers and other planthoppers used to control 25% wettable powder per acre 40-60 grams).
Q: Does temperature have any effect on the effect of this medicine?
A: Yes, because the drug is a systemic product. Because the temperature affects the metabolism and absorption of the plant, it will have a certain impact. However, the effect of temperature is not as obvious and strict as acetamiprid. What needs to be added is: Do not guide farmers to achieve a 100% cure rate. On the contrary, a 100% drug is often a highly toxic pesticide. It is not really a good medicine. The three-day control of nitenpyram can be as good as 86% (the highest number of experimental data for this year).
Q: Can nitenpyram also control some pests or what else?
Answer: Nitenpyram is effective against all sucking pests and is effective against some azole sucking pests and siphon pests. From the results of this year's experiment, nitenpyram can control the following pests, and its marked activity is as follows: rice planthoppers (white backed planthoppers, brown planthoppers, brown planthoppers), whitefly, whitefly, black locust, Indica armigera, rice gall midge, thrips, black cockroach, leafhopper, green-lipped cockroach, green cockroach, fleas, yellow cockroach, red cockroach. The specific experimental data of other pests is not very comprehensive and cannot be sorted.
Q:The buprofezin that I have been using in the past is very cost-effective.
Answer: Buprofezin has a contact stomach poisoning effect on pests. It cannot directly kill adults, but it can reduce spawning so that the eggs laid cannot hatch or die soon after hatching. Therefore, it is better used as a preventive measure, but because it cannot directly kill adult insects, the effect is slow, and it is effective only for nymphs and eggs. Therefore, it is basically ineffective for migratory locusts.