At present, there are 3 kinds of insecticides that are used more commonly, which are indoxacarb, diacarbazone and diacarbazonil.
Introduction of indoxacarb, diacarbazone and chlorfenapyr
The following aspects of the three pesticide ingredients for simple analysis and control, for everyone to screen products to provide some reference.
1.Insecticidal way
Diacarbazone has gastric toxicity and tactile killing, no internal absorption, strong killing of eggs，Chlorfenapyr has gastric toxicity and contact effect, has certain endosuction effect, does not kill eggs ，Indoxacarb has gastric toxicity and tactile killing, no internal inhalation, not killing eggs，All of them are mainly gastrotoxic and tactile, and the insecticidal effect can be greatly improved by adding penetrant/expander.
2.insecticidal spectrum
Diacarbazone is mainly used in the control of leaf roller, plutella xylostella, rapeseed, Spodoptera beet, Spodoptera litura, whitefly, thrips and rust tick, especially in the control of rice leaf roller ，Chlorfenonil has excellent control effect on boring, sucking and chewing pests and mites, especially against diamondback moth, Beet Armyworm, Spodoptera litura, leaf slipper, Librizia Americana, pod borer, thrips, spider red, etc ；Indoxacarb is mainly used for the control of lepidopteran pests, such as Spodoptera exigua, plutella xylostella, rapeseed, Spodoptera litura, cotton bollworm, nicotinia tabaci, and lepidoptera.
3.Death worm speed
Diacarbazone, the mouth of the insect is anesthetized within 2 hours after the insect contacts with the pesticide and feeds on the leaves with the pesticide, so as to stop feeding and harm the crops, and the peak of dead insects is reached in 3-5 days；1 hour after administration of chlorfenapil, insect activity becomes weak, spots appear, color changes, activity stops, coma, paralysis, and eventually death, with the peak of death reaching 24 hours；Indoxacarb: insects stop feeding and become paralyzed within 0-4 hours. Coordination of insects is impaired (which can cause larvae to fall from the crop). Death usually occurs within 1-3 days after treatment
Diacarbazone has strong ovicidal effect, and the insect control time is relatively long, up to 25 days. Chlorfenapyr does not kill eggs, but only has prominent control effect on older insects, and the control time is about 7-10 days. Indoxacarb does not kill eggs, but uniformly kills lepidopteran pests, and the control effect is about 12-15 days.
5.Leaf rate
Compared with the control effects of rice leaf roller, the leaf retention rate of dicarbazone, indoxacarb and chlorfenapil reached 90%, 80% and 65% respectively.
Post time: Jan-10-2022