When I'm in Baguio, a farmer show that botanical pesticide prepared from kakawate leaves and other herbals are used to kill worms that attack cabbage and broccoli like cabbage butterflies, diamondback moths, leaf miners, and inchworms.
Apart from rodents, kakawate also acts potently on insects. In many countries, its leaves are placed in chicken runs, or left to soak in hot water and used to eliminate fleas and lice on domestic animals. In Ilocos region, a study made by the Mariano Marcos State University found that kakawate leaves are effective in controlling diseases that attack garlic like purple blotch and bulb rot.
To prepare:
1. Pound the kakawate leaves using a mortar and pestle.
2. Add one liter of water to a kilogram of pounded kakawate leaves. The mixture is filtered being sprayed to the plants infested by pests.
Many other plants can also be used to prepare extracts with pesticide properties. A mixture of garlic, onion, marigold, and hot pepper (siling labuyo) can annihilate a wide range of insect pests.
To prepare:
1. Boil water for 10 minutes.
2. Add three to four garlic gloves, two handfuls of marigold leaves, two to three onion bulbs, and two to three small hot peppers.
3. Let the mixture cool.
4. Dilute the mixture with water four to five times the quantity of the botanical materials.
5. Stir thoroughly and spray on infested parts.
The mixture is best used within two days. In fact is widely use in some farmer in around here in Gamu that what Singaporean call C & G cheap and Good.
Plant-derived pesticides for developing countries: Possibilities
research needs
Phytochemistry and Agriculture (Proceedings of the Phytochemical Society of Europe)
Biocides, fungicides, algaecides and mildewcides directory.(Directory): An article from: Coatings World
