In this season of each year, a large number of pests break out (army bug, Spodoptera littoralis, Spodoptera litura, Spodoptera frugiperda, etc.), causing serious damage to crops. As a broad-spectrum insecticidal agent, chlorfenapyr has a good control effect on these pests.
1. Characteristics of chlorfenapyr
(1) Chlorfenapyr has a broad spectrum of insecticides and a wide range of applications. It can be used to control many types of pests such as Lepidoptera and Homoptera on vegetables, fruit trees, and field crops, such as diamondback moth, cabbage worm, beet armyworm, and twill. Many vegetable pests such as noctuid moth, cabbage borer, cabbage aphid, leafminer, thrips, etc., especially against adults of Lepidoptera pests, are very effective.
(2) Chlorfenapyr has stomach poisoning and contact killing effects on pests. It has strong penetrability on the leaf surface, has a certain systemic effect, and has the characteristics of wide insecticidal spectrum, high control effect, long lasting effect and safety. The insecticidal speed is fast, the penetration is strong, and the insecticide is relatively thorough. (Pests can be killed within 1 hour after spraying, and the day’s control efficiency can reach more than 85%).
(3) Chlorfenapyr has a high control effect against resistant pests, especially for pests and mites that are resistant to pesticides such as organophosphorus, carbamate, and pyrethroids.
2. Mixing of chlorfenapyr
Although chlorfenapyr has a broad spectrum of insecticides, the effect is also good, and the current resistance is relatively low. However, any kind of agent, if used alone for a long time, will definitely have resistance problems in the later stage.
Therefore, in the actual spraying, chlorfenapyr should be often mixed with other drugs to slow down the generation of drug resistance and improve the control effect.
(1) Compound of chlorfenapyr + emamectin
After the combination of chlorfenapyr and emamectin, it has a broad spectrum of insecticides, and can control thrips, stink bugs, flea beetles, red spiders, heartworms, corn borers, cabbage caterpillars and other pests on vegetables, fields, fruit trees and other crops.
Moreover, after mixing chlorfenapyr and emamectin, the lasting period of the medicament is long, which is beneficial to reduce the frequency of using the medicament and reduce the use cost of farmers.
The best period of application: in the 1-3 instar stage of pests, when the pest damage in the field is about 3%, and the temperature is controlled at about 20-30 degrees, the effect of application is the best.
(2) chlorfenapyr + indoxacarb mixed with indoxacarb
After mixing chlorfenapyr and indoxacarb, it can not only kill the pests quickly (the pests will stop eating immediately after contacting the pesticide, and the pests will die within 3-4 days), but also maintain the efficacy for a long time, which is also more suitable for crops. Safety.
The mixture of chlorfenapyr and indoxacarb can be used to control lepidopteran pests, such as cotton bollworm, cabbage caterpillar of cruciferous crops, diamondback moth, beet armyworm, etc., especially the resistance to noctuid moth is remarkable.
However, when these two agents are mixed, the effect on eggs is not good. If you want to kill both eggs and adults, you can use lufenuron together.
The best period of application: in the middle and late stages of crop growth, when the pests are older, or when the 2nd, 3rd, and 4th generations of pests are mixed, the effect of the medication is good.
(3) chlorfenapyr + abamectin compound
Abamectin and chlorfenapyr are compounded with obvious synergistic effect, and it is effective against highly resistant thrips, caterpillars, beet armyworm, leek All have good control effects.
The best time to use it: in the middle and late stages of crop growth, when the temperature is low during the day, the effect is better. (When the temperature is lower than 22 degrees, the insecticidal activity of abamectin is higher).
(4) Mixed use of chlorfenapyr + other pesticides
In addition, chlorfenapyr can also be mixed with thiamethoxam, bifenthrin, tebufenozide, etc. to control thrips, diamondback moths and other pests.
Compared with other drugs: chlorfenapyr is mainly used to control lepidopteran pests, but in addition to chlorfenapyr, there are two other drugs that also have good control effects on lepidopteran pests, namely lufenuron and indene Wei.
So, what is the difference between these three medicines? How should we choose the right medicine?
These three agents have their own advantages and disadvantages. In practical applications, we can choose the appropriate agent according to the actual situation.
Post time: Mar-07-2022