1. Brief introduction:
Pyrethrin I: molecular formula C21H28O3; Is a viscous liquid; Boiling point 146~150 ℃ (0.0005 mm Hg), specific rotation【 α】 She-14 ° (isooctane); Insoluble in water, soluble in ethanol, petroleum ether, carbon tetrachloride, dichloromethane, nitromethane, and other solvents; The median lethal dose is 1.2 g/kg (orally administered to rats). Its biuret derivative has a melting point of 114 to 146 ℃. Pyrethrin I is easily oxidized and loses its insecticidal activity when exposed to air, so it must be kept away from light and refrigerated.
Pyrethrin II: Molecular formula C22H28O5; Is a viscous liquid; Exposure to air is prone to oxidation failure; Boiling point 192~193 ℃ (0.007 mm Hg)【 α】 Hazard+14.7 ° (isooctane ether); Its solubility, chemical properties, and toxicity are generally similar to those of pyrethroid I.
2.Specifications: 25%,50%,70% TK. 1.5%EW.
3.Pyrethrins 1.5%EW Usage:
Target |
Dosage |
Using method |
Aphids |
600-1000times water dilution (1200ml-2400ml/ha) |
By foliar spraying |
Whitefly |
600-1000times water dilution (1200ml-2400ml/ha.) |
By foliar spraying |
Thrip |
600-1000times water dilution (1200ml-2400ml/ha.) |
By foliar spraying |
Leafhopper |
600-1000times water dilution (1200ml-2400ml/ha.) |
By foliar spraying |
Leafbeetle |
500-800times water dilution (1200ml-2400ml/ha.) |
By foliar spraying |
This product is toxic to bees and silkworm, and is prohibited around flowering plants during flowering. During application, close attention should be paid to the impact on nearby bee colonies, and it is prohibited near silkworm chambers and mulberry gardens; It is toxic to aquatic organisms such as fish, and should be applied far away from aquaculture areas, river ponds, and other water bodies. It is prohibited to clean the application equipment in river ponds and other water areas. Prohibited in areas where natural enemies such as trichogramma fly; |