Lufenuroné um inseticida de benzoilureia;Chlorfenapyré um inseticida pirrol e acaricida;Indoxacarbé um inseticida da oxadiazina. Os três têm seus próprios efeitos inseticidas. Este artigo analisa e compara brevemente os três ingredientes dos seguintes aspectos para fornecer algumas referências para a seleção de produtos.
1. Método de inseticida
Lufenuron tem veneno de estômago e efeitos de matança de contato, sem absorção sistêmica e forte assassinato de ovos; Chlorfenapyr tem veneno de estômago e efeitos de matança de contato, tem um certo efeito sistêmico e não mata ovos; O Indoxacarb tem veneno de estômago e efeitos de matança de contato, não tem efeito sistêmico e não mata ovos; Todos os três são principalmente venenos de estômago e matança de contato, e a adição de penetrantes ou extensores ao aplicar o pesticida melhorará bastante o efeito de matança.
2. Espectro de inseticida
Lufenapyr is mainly used to control leaf rollers, diamondback moths, cabbage worms, beet armyworms, armyworms, whiteflies, thrips, rust ticks and other pests, and is particularly effective in controlling rice leaf rollers; chlorfenapyr has excellent control effects on boring, sucking and chewing pests and mites, especially against resistant pests such as diamondback moths, beet armyworms, armyworms, leaf rollers, American leafminers, bean pod borers, thrips, and red spiders; indoxacarb is mainly used to control beet armyworms, diamondback moths, cabbage worms, armyworms, cotton bollworms, tobacco budworms, and leaf rollers. - So the comparison of insecticide spectrum is: chlorfenapyr>lufenapyr>Indoxacarb
3. Velocidade de morte de insetos
After the insects contact the pesticide and feed on the leaves with the pesticide, their mouths are anesthetized within 2 hours, and they stop feeding, thus stopping harming the crops, and the peak of insect death is reached in 3-5 days; 1 hour after chlorfenapyr is sprayed, the insects become less active, spots appear, the color changes, the activities stop, they become comatose, and limp, and eventually die, and the peak of insect death is reached in 24 hours; within 0-4 hours after indoxacarb, the insects stop feeding and are immediately paralyzed, and the insects' coordination ability will decrease (which may cause the larvae to fall from the crops), and they usually die within 1-3 days after the application of the pesticide. So the comparison of insecticidal speed is: chlorfenapyr>indoxacarb>LumeFantrine.
4. Duração do efeito
Lufenuron has a strong egg-killing effect, and the insect control time is relatively long, up to 25 days; chlorfenapyr does not kill eggs, but only has outstanding control effect on old insects, and the insect control time is about 7-10 days; indoxacarb does not kill eggs, but kills all lepidopteran pests, and the control effect is about 12-15 days. So the comparison of the duration of effect is: lufenuron>indoxacarb>Chlorfenapyr.
5. Taxa de retenção de folhas
The ultimate goal of insecticide is to prevent pests from harming crops. As for whether the pests die quickly or slowly or more or less, it is just a matter of perception of the people. The leaf retention rate is the ultimate indicator to measure the value of the product. Comparing the control effect of rice leaf roller, the leaf preservation rate of lufenuron can reach more than 90%, indoxacarb reaches 80%, and chlorfenapyr reaches about 65%; so the comparison of leaf preservation rate is: lufenuron>indoxacarb>Chlorfenapyr.
6. Segurança
So far, there has been no phytotoxicity response to lufenuron, and the agent will not cause the piercing-sucking pests to become rampant again, and it has a mild effect on the adults of beneficial insects and predatory spiders; chlorfenapyr is sensitive to cruciferous vegetables and melon crops, and is prone to phytotoxicity when used at high temperatures or high doses; indoxacarb is highly safe, with no phytotoxicity response, and vegetables or fruits can be picked and eaten the next day after application. So the comparison in terms of safety is: indoxacarb>lufenuron>Chlorfenapyr.
7. Custo do medicamento
The comparison of drug cost is: indoxacarb>chlorfenapyr>Lufenuron. Para avaliar o sentimento geral dos três em uso real em uma frase: Lufenuron se sente muito eficaz quando usado pela primeira vez, mas é muito eficaz depois de usá -lo duas vezes em uma linha; Chlorfenapyr, pelo contrário, parece muito eficaz quando usado pela primeira vez, mas parece muito comum depois de usá -lo duas vezes seguidas; O efeito do Indoxacarb está aproximadamente entre os dois.
