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Marigold

Common names: Tagetes
Scientific name: Tagetes spp.
Family: Compositae

picture discription
Photo by Gael Jelica Cabangbang

Plant parts used

Flowers, leaves, and roots

Mode of action

Insecticidal, repellent, fungicidal, nematocidal

Formulations

Materials Methods of preparation How to use  Plant pests 
Fermented marigold extract
(Stoll: p. 132)

Whole flowering plant
Soap
Water
Strainer
Drum



Fill-in drum with 1/2-3/4 full
of flowering plants.
Leave to stand for 5-10 days.
Stir occasionally.
Strain before use.



Dilute the filtate with water
at a ratio of 1:2
Add 1 tsp soap in every
liter of the extract




Coffee berry disease
Rice blast
Tomato blight
Root knot nematodes
Marigold water extract
(Stoll: p. 132)

Mexican marigold leaves
Soap
Hot water
Mortar and pestle
Strainer
Pail


Pound the leaves.
Soak the pounded leaves in hot water.
Leave to stand for 24 hours.
Strain.


Dilute the filtate with water at a ratio of 1:2
Add 1 tsp soap in every liter of the extract



Ant
Aphid
Grasshopper
Marigold and tomato extract
(Stoll: p. 132)

1 kg of marigold leaves
1 kg of tomato leaves
20 liters of water
Grinder
Soap
Strainer
Pail



Grind the leaves.
Add enough water.
Strain.



Add 20 liters of water to the filtrate.
Add 1 tsp soap in every liter of the extract.
Spray on the target pests.




Aphid
Bean pod borer
Leaf beetle
Marigold and chili extract
(Stoll: p. 132)

500 g of whole plant
10 hot chili pods
15 liters of water
Knife
Soap
Strainer
Pail



Finely chop the plant and the chilies.
Soak them in water overnight.
Strain.



Dilute the filtate with water at a ratio of 1:2
Add 1 tsp soap in every liter of the extract




Most agricultural pests
Marigold, chili, garlic,
and onion spray
(HDRA, 2000)

2 handfuls of
marigold leaves
2 pieces of chili
3 garlic cloves
2 large onions
Cooking pan
Pail
Strainer





Chop 2 handfuls of marigold
leaves, 2 pieces of chilies, 3 gloves
garlic, and 2 large onions.
Place in a pan of water
and bring to boil.
Let it cool.
Strain.




Add four times amount
of water to the extract.
Spray or sprinkle on
affected plant parts.




Most insect pests

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. Do not have a 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

Plant extract can cause irritation to sensitive skin.

Effect on non-target organisms

Recent studies show that phyrethrin-based chemical products are harmful to natural enemies, fishes and crustaceans, and pose environmental risks.



External links


References


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