jump directly to content.
Principles. Crops. Pests. Control methods Library. Links.
key visual: online information service for Non-chemical Pest Management in the Tropics

Leucas

Scientific name: Leucas aspera

Plant parts used

Whole plant

Mode of action

Insecticidal

Formulations

Materials Methods of preparation How to use Target pests
Leucas extract
(CIKS, 2002: p.28)

3 Leucas plants (entire plant)
Water
8-12 ml of soap
Grinder
Strainer
Pail



Cut the plants into small pieces.
Soak overnight in 10 liters of water.
Grind.
Strain.
Add soap.
Stir well.



Dilute with 50-60 liters of water.
Spray early in the morning on
infested plant parts.



Cotton stainers

Standard procedures for the preparation and application of the plant extracts

  1. Select plant parts that are free from diseases.
  2. When storing the plant parts for future usage, make sure that they are properly dried and are stored in an airy container (never use plastic container), away from direct sunlight and moisture. Make sure that they are free from molds before using them.
  3. Use utensils for the extract preparation that are not use for your food preparation and for drinking and cooking water containers. Clean properly all the utensils every time after using them.
  4. Make sure that you do not have direct contact with the crude extract while in the process of the preparation and during the application.
  5. Make sure that you place the plant extract out of reach of children and house pets while leaving it overnight.
  6. Harvest all the mature and ripe fruits before plant extract application.
  7. Always test the plant extract formulation on a few infested plants first before going into large scale spraying. When adding soap as an emulsifier, use a potash-based one.
  8. Wear protective clothing while applying the extract.
  9. Wash your hands after handling the plant extract.

Effect on humans

None known during the write-up, however take extra caution as extract maybe harmful to people with very sensitive skin.

Effect on non-target organisms

None.



External links


References


 to the top        PAN Germany, OISAT; Email oisat@pan-germany.org