L1 /
2
CH3041
ORGANICS /
INORGANICS
• Natural chemicals such as nicotine and pyrethrin from plant extracts have been used for a long time as insecticides.
Pyrethrin I is extracted
from Kenyan daisies.
Pyrethrin I is extracted
from Kenyan daisies.
• Early pesticides
were largely inorganic
such as Bordeaux mix CuSO4/CaO fungicide,
Paris Green Cu3(AsO3)2 insecticide.
such as Bordeaux mix CuSO4/CaO fungicide,
Paris Green Cu3(AsO3)2 insecticide.
• The metal was responsible for the activity.
• Pesticides
containing toxic metals such as
As LD50 2mg/kg are not commonly in use.
As LD50 2mg/kg are not commonly in use.
Sun
sensitive
sensitive
