The Diflubenzuron Introduction

- Aug 14, 2018 -

The brief description:

Diflubenzuron is a benzamide insecticide used on forest and field crops to selectively control insects and parasites. Principle target insect species are the gypsy moth, forest tent caterpiller, several evergreen eating moths and the boll weevil. Diflubenzuron is a stomach and contact poison which acts by inhibiting the production of chitin (a compound that makes the outer covering of the insect hard) and so interferes with the formation of the insect's cuticle or shell. It is also used as a larvae control chemical in mushroom operations and animal houses.

 

Insecticidal mechanism

Its insecticidal mechanism is completely different from that of conventional insecticides. It is neither a neurotoxic agent nor a cholinesterase inhibitor. Its main function is to inhibit the chitin synthesis of insect epidermis, as well as fat body and pharyngeal body. The endocrine and gland are also damaged by damage, which hinders the smooth metamorphosis of the insect.

 

Diflubenzuron is a benzoic acid phenylurea insecticide, and it is a similar insecticide with chlorfenazone. The insecticidal mechanism also inhibits the synthesis of chitin synthase by insects, thereby inhibiting larvae, eggs and cockroaches. The synthesis of chitin in the epidermis prevents the insect from dying from normal ecdysis.

 

The main mode of action is stomach poisoning and contact killing

 

Features:

Diflubenzuron is a specific low-toxic insecticide, which belongs to benzoyls. It has stomach poisoning and contact killing effect on pests. It can not form new epidermis and insect body by inhibiting the synthesis of chitin in insects. Malformed and died, but the effect is slow. This medicine has special effects on lepidopteran pests. Safe to use, no adverse effects on fish, bees and natural enemies.

 

Applicable crop

Diflubenzuron is widely used in apples, pears, peaches, citrus and other fruit trees, corn, wheat, rice, cotton, peanuts and other grain and cotton oil crops, cruciferous vegetables, solanaceous vegetables, melons, etc. Vegetables, tea plants, forests and other plants.

 

It is mainly used to control lepidopteran pests such as Pieris rapae, Plutella xylostella, Spodoptera exigua, Spodoptera litura, Golden Moth, Peach Moth, Citrus Leaf Moth, Armyworm, Tea Tree, Cotton Bollworm, USA White moth, pine caterpillar, leaf roller moth, leafhopper, etc.

Acute toxicity:

Diflurobenzuron is slightly toxic pesticide and carries the signal word CAUTION. No overt signs of toxicity were observed in any of the acute studies conducted (3). The oral LD50 for rats and mice is greater than 4,640 mg/kg and the rat dermal LD50 is greater than 10,000 mg/kg and greater than 4000 mg/kg for rabbits. The inhalation LD50 for rats and rabbits was >35 and >30 mg/l, respectively. The breakdown products formed in sheep, swine, and chickens, are also slightly toxic. The rat oral LD50 is between 1080 and 4640 mg/kg.

Precautions

It is not suitable for the application of dermatophytes in larvae. It should not be applied at high pests and in old age.

 

There will be a small amount of stratification during the storage and transportation of the suspension agent, so the solution should be shaken first to avoid affecting the efficacy.

 

Do not contact the liquid with alkaline substances to prevent decomposition.

 

Bees and silkworms are sensitive to this agent, so beekeeping areas and sericulture areas should be used cautiously. If necessary, take protective measures. The precipitate was shaken and mixed before use.

 

This agent is harmful to crustaceans (shrimp, crab larvae), and care should be taken to avoid contaminating the cultured waters.


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