Now Available! EDN 171

In this issue

• The Neem Tree (Azadirachta indica): A Natural Treasure for Crop Protection
• The Difference-in-Differences Approach to Evaluate the Impact of a Project
• Echoes from Our Network: Using Solar Energy in Greenhouse Operations
• From ECHO's Seed Bank: Black Gram (Vigna mungo) urd bean, urad dhal
• Books, Websites, and Other Resources: Integrating Indigenous and Scientific Knowledge for Sustainable Food Systems in Africa: The Plug-In Principle

Download EDN 171

The Neem Tree (Azadirachta indica)

A Natural Treasure for Crop Protection

Hassan Djebro

Excerpt:

1. Collect 5 kg of fruit that have fallen from the tree. Use only ripe fruit that are yellow or brown/chocolate in color.
2. Soak them in water for 24 hours to remove the outer skins and obtain the husks (shells) containing the kernels.
3. Dry the husks containing the kernels in full sun for at least a day.
4. Gather husks containing kernels (are not empty).
5. Crush them with a mortar and pestle to obtain a coarse powder.
6. Place the resulting product in a plastic container (a lidded drum, a lidded bucket, etc.).
7. Add 10 liters of water to it.
8. Let the mixture steep for 24 hours.
9. Filter the resulting product.

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