Diflubenzuron

Diflubenzuron

Diflubenzuron is a colorless crystal, melting point 230 ℃ - 232 ℃ (decomposition). It is soluble in water 0.08mg/l (pH 5.5200c), acetone 6.5g/l (20 ℃), dimethylformamide 104g / L (25 ℃), dimethylformamide 20g / L (25 ℃), moderately soluble in polar organic solvents, slightly soluble in non-polar organic solvents (< log / L). The solution is sensitive to light and stable to light in the presence of solid.

Its insecticidal mechanism is quite different from that of conventional insecticides in the past. It is neither a nerve agent nor a cholinesterase inhibitor. Its main function is to inhibit the synthesis of chitin in the insect epidermis. At the same time, it can damage the endocrine and glands such as fat body and pharyngeal side body, thus hindering the smooth molting and metamorphosis of insects.

Diflubenzuron is a benzoyl phenyl urea insecticide, which is the same as diflubenzuron No.3. Its insecticidal mechanism is also through inhibiting the synthesis of chitin synthetase of insects, thus inhibiting the synthesis of chitin in the epidermis of larvae, eggs and pupae, so that insects can't molt normally and die due to deformity of insect body.

General name in Chinese: diflubenzuron, flumurazide

English Name: diflubenzuron

Chemical name: 1 - (4-chlorophenyl) - 3 - (2,6-dichlorobenzoyl) urea

CAS No.: 35367-38-5

EINECS accession number: 252-529-3

Molecular formula: c14h9clf2n2o2

Molecular weight: 310.69

Description:

Product features:

Diflubenzuron is a kind of specific low toxic insecticide, belonging to benzoyl group. It has stomach toxicity and contact killing effect on insect pests. It can inhibit the synthesis of chitin, prevent the larvae from forming new epidermis during molting, and cause the larvae to die due to deformity, but its efficacy is slow. This medicine has special effect on Lepidoptera pests. It is safe to use and has no adverse effects on fish, bees and natural enemies.

Applied crops:

Diflubenzuron is widely used in apple, pear, peach, orange and other fruit trees, corn, wheat, rice, cotton, peanut and other crops, cruciferous vegetables, Solanaceous Vegetables, melons and other vegetables, and tea, forest and other plants. Prevention and control objectives:

It is mainly used to control lepidopteran pests, such as Pieris rapae, Plutella xylostella, Spodoptera exigua, Spodoptera litura, Lepidoptera Chrysomela, Phyllostachys citri, armyworm, Ectropis obliqua, Helicoverpa armigera, Hyphantria cunea, Dendrolimus punctatus, leaf roller, leaf roller, etc.

explain:

l  Chlorfenuron is a kind of dehulling hormone, which should not be applied in the high and old stage of pests, but should be applied in the young stage.

l  There will be a small amount of stratification in the process of storage and transportation of SC, so the liquid should be shaken up before use, so as not to affect the efficacy.

l  Don't contact with alkali to prevent decomposition

l  Bees and silkworms are sensitive to this agent, so they should be used cautiously in beekeeping area and sericulture area. If they are used, protective measures must be taken. Shake up the precipitate and mix well before use.

l  This agent is harmful to crustaceans (shrimp and crab larvae), so attention should be paid to avoid polluting the aquaculture waters.

use:

How to use the target dose (active ingredient) of crops

Citrus rust mite 60-80mg/kg spray diluted with water

60-125mg/kg leaf water mist diluted with water

Citrus fruit lice 100mg/L diluted with water spray

25mg/L spray of cabbage caterpillar and diamondback moth

Cabbage and other vegetables, 15-30g/h, water thinning spray

Corn and sorghum corn borer 100-200mg/L was irrigated or sprayed.

Rice, wheat and sugarcane rice leaf roller 25mg/L diluted with water spray

100mg/kg diluted water spray for corn and vegetable beet armyworm and Spodoptera litura

Cotton bollworm 3-4mg/L diluted with water spray