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ECHO Asia Note Articles (Vietnamese)

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  1. Playing with Water Wheels: Exploring Low-Cost Methods for Pumping Irrigation Water
    2022-03-01 As we began looking into sustainable and alternative solutions for pumping water, our team began ‘playing around’ with the idea of water wheels for the supply of irrigation water to low elevation farmland. We initially began with research and testing of a pump called a Sling Pump, but gave up...





  2. A ‘Successful Failure’: Introducing SALT Technology in Northern Thailand
    2022-03-01 Dave had come to Thailand two years prior exactly for the opportunity that he was now presented with. Ethnic minority hillside farmers had been experiencing lower crop yields even with their efforts in using more chemical fertilizer.





  3. An Innovative ‘Do-All’ Biochar Burner Design
    2021-09-01 [Editor’s Note: There are many biochar burner designs currently in existence, intended for various scales and end uses in mind. This particular design has becomea favorite of the ECHO Asia farm staff, for its ability to produce larger quantities of pyrolyzed material and wood vinegar at the same...





  4. Establishing a Scaled-Up Black Soldier Fly System
    2021-09-01 Critical to the success of a small-scale farm is its ability to turn on-farm waste into alternative value-added products. By integrating the Black Soldier Fly (Hermetia illucens) on the farm, small-scale enterprises can do just that. Taking common waste products such as food scraps and manure,...





  5. [Example] Small Farm Biosecurity Plan
    2021-06-01 [Editor’s Note: This is only one example of a biosecurity plan for small-scale pig operations in one region and may be used as a template. It is unlikely that all measures will be practical or appropriate for your context and should therefore be adapted according to the needs and priorities of...





  6. African Swine Fever Virus: Overview and Prevention on the Small Farm
    2021-06-01 As global prosperity has risen, so too has demand for animal protein. Pork has become the most consumed meat of terrestrial animals at 37% of total global meat consumption (Beltrán-Alcrudoet al., 2017). Pork production most drastically increased in Asia (Figure 1), accounting for as much as 55%...





  7. I Suspect ASFV on my Farm
    2021-06-01 What Steps Should I Take?





  8. Stingless Beekeeping (Meliponiculture) on Java
    Stingless Beekeeping, or Meliponiculture, is the keeping of bees from the tribe Meliponini. Stingless bees comprise hundreds of species with there being a possible 89 confirmed species in Subtropical/Tropical Asia and Australia alone (Rasmussen, 2008); and, while many are able to produce honey,...





  9. Production of Vegetable Fern (Diplazium esculentum Reytz.) Under Varying Levels of Shade
    2021-02-01 Several species of edible ferns exist around the world, ranging from the tropics to more temperate regions, and most commonly include the bracken ferns (Pteridium spp.), ostrich fern (Matteuccia struthiopteris), and the Stenochlaena spp. ferns. However, the focus of this study is on the vegetable...





  10. The Martinez Airlift Pump: Lifting Water with Air
    Water pumps have long been a key component of the small-scale farm and are valuable labor-saving devices that offer a variety of practical applications. Pumps ofdifferent types are regularly used for water storage & filtration, irrigation, aquaculture systems, and more. While convenient and...





  11. Cyantesmo Paper for Detecting Cyanide
    Some tropical crops contain cyanogenic glycosides, toxic substances that release hydrocyanic acid (HCN; also referred to as cyanide or prussic acid) when cells are crushed. Consuming these plants without cooking them can cause cyanide poisoning, with varying effects depending on cyanide levels...





  12. Do all parts of a chaya plant contain hydrocyanic acid?
    Leaves of tropical crops like chaya (Cnidoscolus aconitifolius) and cassava (Manihot esculenta) contain cyanogenic glycosides, toxic substances that release hydrocyanic acid (HCN; also referred to as cyanide or prussic acid) when cells are crushed. Consuming these plants without cooking them can...





  13. Tomato Grafting in Southeast Asia: A Useful Technique for Rainy Season Production
    Tomatoes are difficult to grow during Southeast Asia’s hot and humid monsoonal rainy season. A combination of waterlogged soils, increased disease pressure, and high temperatures often kill young tomato transplants or significantly reduce yields. As an introduced crop, originally from South...





  14. Making On-Farm Pig Feed: Farm-Generated Formulas vs. Commercial Feeds
    This article is from ECHO Asia Note # 42 The integration of livestock on the smallholder farm is often a key component to the long-term sustainability of the farm, specifically by means of critical nutrient cycling. Livestock play a unique and critical role on the farm, transforming plant and...





  15. Seed Saving in the Tropics: Lessons Learned from the Network
    This article is from ECHO Asia Note #28 For both farmers and researchers in the tropics, seed saving can be very frustrating. In Mondulkiri province, farmers are rarely able to keep seed for more than the six months between harvest and the new planting season. Seeds stored longer than this tend...





  16. Farm-Generated Feed: Chicken Feed Production
    This article is from ECHO Asia Note #28 Farm-generated fertility contributes to a more sustainable agricultural system. Crop residues and manures are part of the nutrient cycle for plant production and can lower input costs through the use of thermophilic composting, vermiculture, bokashi...





  17. Constructing an Improved Cold Room for Seed Storage
    This article is from ECHO Asia Note #27 When planning to construct a “Cold Room” or “Seed Storage Room” for the purpose of preserving seed viability, one must first consider principles for optimum seed storage. InECHO Asia Note 14(July 2012), we shared results from our comparison of vacuum...





  18. Soil Microorganisms: What They Do and How to Measure Them
    This article is from ECHO Asia Note #27 Microorganisms are defined as any living things too small for the eye to see; they include fungi, algae, and bacteria (Rao, 1995). These small organisms can be found everywhere: in water, air, and in the soil. On a farm, microorganism numbers are especially...





  19. Options for Smallholder Farms: Water Management Design Principles
    2015-09-01 This article is from ECHO Asia Note #26 At the beginning of last year, Thailand experienced its most severe drought in twenty years. Only four years ago it also experienced its most severe flooding. Natural disasters are occurring with increasing frequency and severity; it is therefore vital to...





  20. Making and Testing an Alternative Herbicide for Smallholder Farmers
    This article is from ECHO Asia Note #26 ECHO Asia Impact Center staff members first heard about alternative herbicide recipes that use fermented papaya and pineapple from a retired technical school teacher and organic farmer, Kru Pratoom. As weeding is a big part of any farmer’s life, the Seed...





  21. An Introduction to the Mound, Reservoir, and Paddy Model of Water Management
    2015-12-15 This article is from ECHO Asia Note #26 This series of articles on water management has been reprinted with permission from Thailand’s Natural Farming Magazine and serves as an introduction to small-scale water management. Many of the ideas offered in these articles are consistent with...





  22. Bringing Balance and Caution to Tropical Forage Crops
    2015-08-01 This article is from ECHO Asia Note #25 Invasive alien species (often IAS in the literature) are those species introduced to an area outside their normal or native range, either purposefully or by accident, whose colonization causes significant harm. The species may become weeds, pests or...





  23. Farm-Generated Feed: Hog Feed Production
    2015-08-01 This article is from ECHO Asia Note #25





  24. Neem for Sustainable Pest Management and Environmental Conservation
    2015-06-15 This article is from ECHO Asia Note #24 Increased awareness of the potential of neem tree by creating awareness of its potential would go a long way in promoting its acceptance for pest management and improvement of plant health, animal health, human health, and environmental health.





  25. Tricho-Composting in Bangladesh
    2015-06-15 This article is from ECHO Asia Note #24 Tricho-compost is the material that results when spores of a beneficial fungus, Trichoderma sp. are used in the composting process. Trichoderma sp. are natural competitors against a wide range of harmful fungi; when it is added to compost, the latter can...





  26. Working with Farmers in Malaysia
    2015-02-15 This article is from ECHO Asia Note #23 In Malaysia, agriculture is practised by a range of farmers – from subsistence cultivators of the soil to sophisticated, commercially-driven entrepreneurs. The latter group are quite adept at assessing the latest in technology and varieties, and already...





  27. The Use of Tropical Forages for Livelihood Improvement in Southeast Asia: A Focus on Livestock
    2015-02-15 This article is from ECHO Asia Note #23 In its simplest definition a forage is any plant material grazed or fed to livestock. However, a more specific definition that’s presented in this article focuses on plants (grasses and legumes) that are planted specifically to provide superior feed...





  28. A Low-Cost Concrete Ring Aquaponics System
    2014-10-15 This article is from ECHO Asia Note #22 Currently, we have two 16 x 1 meter floating raft troughs, and one 16 x 1 meter rock bed that are connected to six 1 cubic meter fish tanks by PVC piping (elements 1 and 2 above). We also have three smaller stand-alone aquaponics units that we use as...





  29. Lessons Learned from Cement Ring Aquaponics Systems in Northern Thailand
    2014-10-15 This article is from ECHO Asia Note #22 Today, if someone were to ask me to help build a small system on their urban rental property, would I use cement rings? The easy answer is yes, but....





  30. Increase Yields and Save Money with Innovative SRI Tools
    2014-06-14 This article is from ECHO Asia Note #21 The System of Rice Intensification (SRI) is a promising rice-farming methodology that is able both to lower production costs—of seed, fertilizer, chemicals, and water—and to increase yield by enabling each rice plant to reach its full potential. However,...





  31. Learning from Farmers
    2014-06-14 This article is from ECHO Asia Note #21 It was an afternoon of 2002 when I first read about SRI. As an extension officer in the District Agriculture Development Office (DADO), I started promoting SRI in the following years in the district of Morang, Nepal. Over this time I observed hundreds of...





  32. SRI Roller Planting Marker
    2014-06-14 This article is from ECHO Asia Note #21 Wanpen’s roller planting marker was developed from her experience. When a problem occurred, she would alter and develop the tool according to the problem and rice variety. Wanpen’s tool was designed to be lightweight, easy to handle and convenient to use....





  33. SRI Transplanting Tools
    2014-06-14 This article is from ECHO Asia Note #21 This article contains diagrams of the SRI RollingMarker, Rotary Weeder, and Grass Cutter discussed in other articles from Echo Asia Note 21.





  34. Producing the Biocontrol Fungi Trichoderma and Beauveria
    This article is from ECHO Asia Note #20 In nature, dozens of species of harmful fungi can quickly kill a plant, including Fusarium spp., the causal agents of Fusarium wilt, and Phakospora pachyrhizi, the causal agent of soybean rust. Fungi are unable to produce nutrients on their own, so they...





  35. Farm-Generated Feed: Fish Feed Production
    This article is from ECHO Asia Note #20 Farm-generated fertility makes agriculture more sustainable. Crop residues and manures are part of the nutrient cycle and can lower input costs through the use of thermophilic composting, vermiculture, bokashi production, or green manures. Farm-generated...





  36. Research Note: Creating an Optimum Potting Mixture for Resource-Constrained Growers
    This article is from ECHO Asia Note #19 In a tropical setting, growing seedlings can be a difficult task. A major factor of concern for nursery production is water-logging (Zhu, 2007). During the rainy season, oversaturated soils can effectively suffocate root systems of a seedling by restricting...





  37. Running a Diesel Engine on Biogas
    This article is from ECHO Asia Note #19 It iscompletely possible to run a diesel engine on biogas; however, a number of considerations must be taken into account before it may be considered a serious option in a development program. This article will explore some key considerations when...





  38. The Participatory Approach: Illustrations from Experience
    This article is from ECHO Asia Note #18 “Participatory methods” in community development initially emerged in the 1970s, and interest in their use has continued to increase among practitioners, especially in recent years.1 Many practitioners agree that this growing acceptance is a good thing, as...





  39. An Introduction to Bokashi Fertilizers and Soil Amendments
    This article is from ECHO Asia Note #17 Around the world, many agriculturists and gardeners are adopting soil amendments and fertilizers that are called bokashi. Bokashi is a Japanese word that has no good translation into English, according to Yukiko Oyanagi, a staffer with the Asian Rural...





  40. Sustainable Decentralized Water Treatment for Rural Developing Communities Using Locally Generated Biochar Adsorbents
    This article is from ECHO Asia Note #17 Contamination of drinking water sources by harmful synthetic organic compounds (SOCs), such as pesticides, is a major worldwide problem. Pesticide pollution appears twice in the top ten of The World’s Worst Toxic Pollution Problems Report 2011 by the...





  41. A Toolkit of Resilient Agricultural Responses to Climatic Challenges in Tropical Asia
    This article is from ECHO Asia Note #16 During the 2012 ECHO Agriculture Workshop in Yangon, 63 attendees representing at least 25 agriculture and community development organizations from across Myanmar were polled about their observations and opinions related to climate change. The vast majority...





  42. How to Facilitate Seed Exchanges During Country Meetings or as a Single-Day Event
    2013-03-20 This article is from ECHO Asia Note #16 Since 2011, ECHO Asia has developed and facilitated seed exchange events during meetings with local partners. Through conversations with farmers and NGO staff, we have gained better insight about locally-important plant varieties, seed saving practices,...





  43. Demystifying Soybean Production and Marketing: Our Experience in Laos
    2012-10-01 This article is from ECHO Asia Note #15 Editor: Between 1997 and 2009, Kirby Rogers worked as part of a team to establish an agriculture-based business called Natural Products (NPI) in Bokeo, Laos. Much of this effort involved promoting soybean as a local cash crop as well as developing related...





  44. Soil Quality Assessment: Why and How
    2012-10-01 This article is from ECHO Asia Note #15 Soil quality, also known as soil health, is the capacity of the soil to function – how well it fills the roles we need it to, whether in a natural or managed ecosystem. There are a variety of measures used to gauge soil health and although we can use these...





  45. The Crop Genetic Pump: A Possible Task for NGOs
    2012-07-01 This article is from ECHO Asia Note #14 Editor: Dr. Dick Tinsley is an Emeritus Professor with Colorado State University. With decades of experience as an advisor to smallholder agriculture development projects, he was worked in numerous locations across Asia and Africa. In this article, Dr....





  46. Vacuum Sealing vs. Refrigeration: Which is the most effective way to store seeds?
    2012-07-01 This article is from ECHO Asia Note #14 Introduction Storing seeds in the tropics can often be difficult; with high temperatures and humid conditions, seeds lose their ability to germinate quickly. Many techniques for seed storage exist, from the high-tech standards of gene banks to simple...





  47. Vegetable Production Through the Rainy Season
    2012-04-01 This article is found in ECHO Asia Note #13 The cool, dry season offers the best window for vegetable production in the tropics, assuming an adequate water supply. Pest and disease pressures are relatively low and temperatures are moderate. By contrast, the rainy season brings a combination of...





  48. Three Cheers for Job's Tears: Asia's Other Indigenous Grain
    2012-04-01 This article is found in ECHO Asia Note #13 Introduction In many parts of tropical Asia, especially on rainfed farms, there has been an explosion of acreage planted in maize. The increase in commercial maize production is driven by growing livestock feed demand, and is displacing many traditional...





  49. Seed fairs: Fostering local seed exchange to support regional biodiversity
    This article is from ECHO Asia Note #12 Introduction When you come across an especially promising local variety of a crop grown in your area, how can you enable other farmers to try out this variety? If a farmer gives you 30 seeds of an exceptional variety, how might you go about distributing...