Practical Answers
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Natural Pesticides - Chilli pepper
The insecticidal properties of chilli pepper are highest in the ripe fruit especially in the skin and seed. Chillis act as a stomach poison, antifeedant and repellent to a number of pests.
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Evaluation of the Hoffman Kiln Technology
Evaluation of Hoffmann kiln technology for a low cost solid waste incinerator.
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Utilization of Cow-dung in Brickmaking
Addition of certain organic materials improves the plasticity of clay making it more workable.
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Slow Sand-Filtration Water Treatment Plants
Slow sand-filtration systems are a technically viable water treatment solution.
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Water Hyacinth
This document suggests solutions for the control of water hyacinth - biological, physical and chemical - and discusses possible practical applications of the plant.
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Composting in the Tropics
Organic matter is often piled up in the compound but left unmanaged. This will produce compost but the materials will take a long time to decompose and nutrients will be lost.
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How to make Sri Lanka's Anagi Stove
A step-by-step guide to making a two pot ceramic stove.
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How to Measure the Energy Used to Fire Clay Bricks
What defines an energy-efficient brick-firing technology and how does it compare to other technologies?
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Rainwater Harvesting
This technology is used in places where conventional water supply systems are not provided, are too expensive, or fail to meet people's needs.
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The Sri Lankan Pumpkin Tank
A small scale roof water harvesting tank promoted in Sri Lanka by the World Bank.