Pesticides - Vasambu Karaisal (வசம்பு கரைசல்)

In our Agriculture for Everybody blog series, we are going to see Vasambu Karaisal (வசம்பு கரைசல்) which is an organic pest repellent.

Required Ingredients

S.No.	Ingredient Name	Qty in Litres/Kgs
1	Vasambu	300 Grams
2	Cow's Urine	0.5 Litres
3	Khadi Soap	100 ML
4	Water	2 Litres

Note:

• Vasambu is known as Sweet Flag in English and its botanical name is Acorus calamus.

Method of Preparation

1. Dry the Vasambu in sunlight.
2. Crush the Vasambu into a powdery form and soak it in the water for one night.
3. Stir the solution by using a stick.
4. Filter the solution using a cloth and use it.
5. Mix 2 days old Cow's Urine at the time of use.
6. Mix 100 ml of khadi soap solution at the time of use.

Note:

• Please note that the stick (neem stick is better or any pole) used for mixing the ingredients should be cleaned before & after the usage so as to avoid maggots formations in the pesticide.
• The pesticide should be kept in the shade and covered with a wire mesh or plastic mosquito net to prevent houseflies from laying eggs and the formation of maggots (worms) in the solution.

Method of Storage

1. The pesticide should be kept in the shade and covered with a wire mesh or plastic mosquito net to prevent houseflies from laying eggs and the formation of maggots (worms) in the solution.  This is applicable during the preparation as well as during the shelf life of the pesticide as well.

How long can we store the Pesticide?

1. Not Applicable

How to use the Pesticide?

1. Spray System - The pesticide can be applied as a foliar spray.

When to use the Pesticide?

1. Generally, the ideal time for spraying is during 6 am to 8.30 am and between 4 pm and 6.30 pm.

Which pests are controlled by the Pesticide?

1. Information not available