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11 items found (Showing 1 - 10)
  1. AccessAgriculture Training Video Stone lines induce a natural process of terracing as they trap sediments. Stone lines or stone bunds can slow down runoff, increase water infiltration and form the basis for improved production in semi-arid areas. By using the contours of low slopes water...  
  2. AccessAgriculture Training Video In the semi-arid savannas where rainfall is limited and highly unpredictable, retaining more water in the soil can make the difference between a poor and a good harvest. You can slow down the runoff water by establishing contour bunds. Contour bunds are permanent...  
  3. Key Resource 2001-01-01 Access to clean drinking water remains one of the greatest challenges in the world. The BioSand Filter is one method that can be used for purifying water at the household level. With this filter, contaminated water is filtered through a natural biological layer and then layers of sand, pebbles...  
  4. 2001-01-01 There are many variations of sawdust cookstoves that have been used for many years both in North America and around the world. This sawdust cookstove model provides a low-cost, low-input method for producing a high intensity flame that will burn for up to five hours. The flame burns fairly clean...  
  5. 2001-01-01 When organic material decomposes under anaerobic conditions, it produces biogas which is a mixture of methane (CH4) and carbon dioxide (CO2) with small quantities of hydrogen, nitrogen, carbon monoxide and other compounds. Biogas can be used as a fuel source for cooking, heating, producing light...  
  6. Key Resource 2011-01-01 A sand dam is a reinforced concrete wall built across a seasonal river to hold underground water in sand (see above photo of Nzaaya Muisyo sand dam, Eastern province, Kenya). It is initially built one meter high and up to 90 meters across. During the heavy and erratic seasonal rains, the water...  
  7. 2013-01-01 Ces directives donnent une vue d’ensemble des bonnes pratiques éprouvées de collecte de l’eau dans le monde entier. Celles-ci constituent un guide de référence pratique tout en offrant un support et une expertise technique spécifique pour l’intégration des technologies de collecte de l’eau dans...  
  8. Key Resource 2016-02-05 Until recently, firewood was taken for granted in northern Thailand. With vast forests full of many types of trees, upland households could afford to be choosy concerning the wood they used for cooking. However, in recent years, more and more communities are facing restricted access to forest...  
  9. 2016-10-18 Bamboo’s reputation is largely based upon intrinsic peculiarities of certain varieties. The plant can grow a meter a day and is the staple diet for giant pandas; though a grass, it can grow to 30 meters tall with hollow wooden stems which are stronger than steel; and bamboo has a reproductive...  
  10. 2018-07-18 Recently, ECHO Community member Brad Ward asked on our online forum about metal silo construction. “I'm going to be building a 3.5 cubic meter metal silo. I have come across a couple of good resources online that cover the topic pretty well, but I would love to hear from those of you who have...