Understanding the types of soil present in a location and how to work with the soil to maintain and improve its biological potential is essential to sustainable food production.  



  1. Ressource principale
    01/01/2002 L’acidification du sol est un processus naturel ayant 'importants effets sur la croissance des plantes. À mesure que de sol devient de plus en plus acide, particulièrement lorsque le pH descend en-dessous de 4,5, il est de plus en plus difficile de produire des cultures vivrières. Lorsque le pH...
  2. Ressource principale
    20/01/2009 All plants need certain mineral elements for proper growth, development, and maintenance. The basic structure of all organisms is built of carbon (C), oxygen (O) and hydrogen (H). Plants obtain these elements from water (H2O) in the soil and carbon dioxide (CO2) in the air, so no input is...
  3. 31/10/2018 This article is from ECHO Asia Note # 36. Soil chemical, physical, and biological properties range from those highly favorable to plant growth to those highly unfavorable to plant growth. It is rare—especially in the tropics—to find a soil in its natural state in which all properties are highly...
  4. Ressource principale
    23/07/2015 Le changement climatique aura un énorme impact sur les populations les plus pauvres du monde. Les rendements des cultures ont déjà baissé dans les tropiques et devraient encore baisser de 15 à 30 % en 2080 en Afrique, en Asie du Sud et Amérique Centrale (Hoffman 2013). Certains pays pourraient...
  5. 20/01/2002 The conventional view of the relationship between soil nutrients and crop productivity in the tropics is leading to both damaging agricultural policies and inefficient and damaging farm-level practices. There is no need to use the huge quantities of chemical fertilizers that are so often...
  6. This video provides a quick overview of the procedure used at ECHO Florida to test for soil nitrate using a Vernier ion selective electrode (ISE). A lab protocol provides more detailed descriptions of the steps in the process as well as all the required materials and equipment for the test.
  7. 20/12/2013 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. A variety of measures are used to gauge soil health; although we can use these characteristics as indicators of soil quality,...
  8. ISRIC – World Soil Information has a mission to serve the international community as custodian of global soil information. We are striving to increase awareness and understanding of soils in major global issues.
  9. 15/02/2017 This report describes and analyzes the soil distribution and characteristics of the main soil types in Mainland Southeast Asia (MSEA) that comprise the countries of Cambodia, Lao PDR, Myanmar, Thailand, and Vietnam. This article is from ECHO Asia Note #30
  10. A global consortium has been formed that aims to make a new digital soil map of the world using state-of-the-art and emerging technologies for soil mapping and predicting soil properties at fine resolution.This new global soil map will be supplemented by interpretation and functionality options...
  11. The International Union of Soil Sciences (IUSS) is the global union of soil scientists. The objectives of theIUSSare to promote all branches of soil science, and to support all soil scientists across the world in the pursuit of their activities. This website provides information forIUSSmembers...
  12. TheInternational Union of Soil Science (IUSS)- at its Seventh Congress, at Madison, Wisconsin, USA, in 1960 - recommended that soil maps of continents and large regions be published. As a follow-upFAO and Unesco decided in 1961 to prepare a Soil Map of the World at 1:5 000 000 scale. The project...
  13. Healthy soils are the foundation of agriculture. In the face of mounting challenges such as a growing global population, climate change, and extreme weather events, soil health is critical to our future. Healthy soil is essential as global demands rise for food, fuel, and fiber. Soils also play a...
  14. Sustainable Agriculture for Small-Scale Growers in Nicaragua The mission ofBioNicais to provide training in Nicaragua on how to reclaim depleted soil –“Grow the Soil”– so the soil can grow nutritionally balanced crops. Participants include: 1) agricultural technicians working with...
  15. The Cornell Soil Health Assessment Training Manual: Provides an overview of the concept of soil health. Describes soil constraints and soil quality issues common to soils in New York and the Northeast region, especially in vegetable and field crop production systems. Provides guidelines on how to...
  16. 01/10/2005 One of the most important things a farmer can do for his farm is to prevent soil erosion. One way to do so is by keeping soil covered, especially during the rainy season. Vegetative cover and high levels of soil organic matter are key. Below is a brief description of several vegetative or...
  17. ABSTRACT - Journal of Composting Science and Utilization, 2017 Tropical acid soils are highly weathered as they exist under tropical environment with high rainfall and temperature throughout the year, which affects nitrogen availability. Soil organic nitrogen is important in estimating soil...
  18. AccessAgriculture Training Video Au Kenya, des pionniers de l’agriculture à petite échelle des zones semi-arides parviennent à stabiliser les berges des rivières et à réduire le ruissellement des eaux de pluie des parcelles voisines en plantant des arbres et des herbes.
  19. AccessAgriculture Video Introduction to sustainable land management practices which have a proven track record in Africa. They can help control land degradation and improve production for small scale farmers, despite the challenges of climate change.
  20. Plant and Soil publishes original research papers and solicited review articles that deal with the interface of plant biology and soil sciences, and are of general interest. We give preference to those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at...
  21. ThisGlossary of Soil Science Termswas an ad hoc committee of the Soil Science of America to provide a single glossary of terms for the various disciplines of soil science.
  22. AccessAgriculture Training Video Une vidéo de 22 minutes pour expliquer l'importance de combiner des ressources organiques, des engrais minéraux et des variétés améliorées de manière adaptée aux conditions locales. Des cas pratiques tirés de diverses zones agro-écologiques du Mali, Niger,...
  23. AccessAgriculture Training Video Les oignons ont moins de racines et celles-ci sont peu profondes et peuvent donc absorber les nutriments seulement de la couche superficielle du sol. Ceci explique pourquoi il faut prendre beaucoup de précautions pour rendre le sol fertile quand vous voulez...
  24. AccessAgriculture Training Video Les oignons ont besoin d’un sol riche et fertile. Cultivez vos oignons seulement une fois tous les 3 ans dans le même champ. Plantez vos oignons dans des plates-bandes surélevées, en particulier pendant la saison pluvieuse. Repiquez vos plantules quand ils...
  25. AccessAgriculture Training Video Dans des zones semi-arides de l’Afrique de l’Ouest des producteurs et des éleveurs nous expliquent pourquoi et comment les arbres et le bétail jouent un rôle essentiel pour obtenir des terres et cultures productives. Au Niger et au Ghana c’est une des stratégies...
  26. AccessAgriculture Training Video Dans cette vidéo vous apprendrez tout ce qu’il faut savoir sur les nutriments, la structure des sols, la matière organique et les moyens de maintenir la fertilité du sol. Ceci vous permettra de continuer à cultiver votre terre en produisant des cultures saines....
  27. Regeneration International is a 501(c)(3) nonprofit dedicated to building a global network of farmers, scientists, businesses, activists, educators, journalists, governments and consumers who will promote and put into practice regenerative agriculture and land-use practices that: provide...
  28. Session: Climate uncertainty and environmental degradation cause deterioration in nutritional status of rural farm families throughout the tropics. Conservation Agriculture methods allow farmers to adapt to these challenges by building soil quality, lowering the risks of uncertain rainfall, and...
  29. Abstract, Science Advances, 2018 August Agricultural and industrial activities have increased atmospheric nitrogen (N) deposition to ecosystems worldwide. N deposition can stimulate plant growth and soil carbon (C) input, enhancing soil C storage. Changes in microbial decomposition could also...
  30. Source: FAO-UNESCO, Soil Map of the World, digitized by ESRI. Soil climate map, USDA-NRCS, Soil Science Division, World Soil Resources, Washington D.C. Data Aggregation and Reliability: Conversion of the FAO Soil Map of the World to Soil Taxonomy requiring assigning a Suborder to every...
  31. Abstract , 1997 Soil is the habitat of plant roots and of a diverse array of organisms-bacteria, fungi, protozoa and invertebrate animals -which contribute to the maintenance and productivity of agroecosystems. As intensification occurs, the regulation of functions through soil biodiversity is...
  32. 20/04/2001 Soil acidity, or low pH, limits plant growth in many parts of the world. Although low pH can harm plants in many ways, this article will deal only with one of these factors, aluminum (Al) toxicity.Al is the third most abundant element on the earth (after oxygen and silicon), and the most abundant...
  33. 06/02/2018 Speaker Bio: Dr. Tom Thompson is Associate Dean and Director of International Programs in the College of Agriculture and Life Sciences and Professor of Agronomy at Virginia Tech. He earned B.S. , M.S. , and Ph.D. degrees in agronomy and soil science. He was an academic department head at two...
  34. The Journal of Soil Science and Environmental Management (JSSEM)is a peer reviewed journal. The journal is published per article and covers all areasof the subject such as: Biological control of rot-inducing fungi Post harvest losses of rice from harvesting to milling Genetic variability studies...
  35. 03/10/2017 Soils of smallholder farmers are often depleted of organic matter and available soil nutrients, and may also be acidic and/or saline. We will review the causes and extent of these soil-related challenges in the developing world. A variety of possible management responses to these challenges will...
  36. 31/10/2018 This article is from ECHO Asia Note # 36. Soil chemical, physical, and biological properties range from those highly favorable to plant growth to those highly unfavorable to plant growth. It is rare—especially in the tropics—to find a soil in its natural state in which all properties are highly...
  37. 20/01/2011
  38. 13/02/2019 Session: Soil degradation and rapid change are faced across Africa, and require attention to both old and new technologies. Over two decades of action research with farmers in Malawi has shown that smallholder food production and nutrition can be improved through biological principles and...
  39. A brief video ofChris McDonoughdescribing the issues of soil erosion in black cracking clay soils in Tanzania, showing the importance of conservation farming techniques to help overcome this.
  40. The online Soil Biology Primer is an introduction to the living component of soil and how it contributes to agricultural productivity and air and water quality. The Primer includes chapters describing the soil food web and its relationship to soil health and chapters about soil bacteria, fungi,...
  41. 20/10/2008 When a legume is growing in its native habitat, it is likely that the appropriate bacteria are present in the soil. If nodules are present on the roots, especially along the taproot near the crown, and if the nodules are pink or red inside, then an appropriate bacterial strain is living in the...
  42. Soil health, or the capacity of the soil to function, is critical to human survival. Soil health constraints beyond nutrient limitations and excesses currently limit agroecosystem productivity and sustainability, resilience to drought and extreme rainfall, and progress in soil and water...
  43. Small holder farmers in Africa do not currently have access to fast and reliable soil testing services, and as a result lack the necessary soil information to purchase the correct inputs for increasing their yields. To meet this need in Kenya, we have developed a professional Soil Testing and SMS...
  44. Founded by Dr. Elaine Ingham in 1996,Soil Foodweb Incis dedicated to changing the way the world grows food and how humans treat the Earth's soils. The Soil Foodweb Approach has been used on over 5 Million acres worldwide to dramatically reduce input costs, increase yields and to sequester soil...
  45. 20/12/2013 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. A variety of measures are used to gauge soil health; although we can use these characteristics as indicators of soil quality,...
  46. 20/07/2007 This article takes a fresh look at what is going on in the soil, especially in relation to soil organic matter and the organisms it supports; how this life in the soil is impacted by our land care practices; and how it in turn impacts the productivity of our farms.
  47. Healthy soil is the foundation for profitable, productive, and environmentally sound agricultural systems. By understanding how the soil processes that support plant growth and regulate environmental quality are affected by management practices, it is possible to design a crop and soil management...
  48. Session:Soil degradation and rapid change are faced across Africa, and require attention to both old and new technologies. Over two decades of action research with farmers in Malawi has shown that smallholder food production and nutrition can be improved through biological principles and targeted...
  49. No pseudoscience, just hard data presented in a well organized manner. This is a great book for the farmer, gardener, or landscaper who has a working knowledge of fertilizing and wishes to take their expertise to the next level.
  50. En observant les feuilles de maïs, on peut diagnostiquer quatre carences en éléments nutritifs - phosphore, potassium, azote et magnésium. Ce document comprend des photos d'une feuille de maïs en bonne santé et de feuilles de maïs démontrant chacune de ces carences en éléments nutritifs. Il...
  51. Soil living organisms, including the large-sized (macrofauna) and small-/medium-sized (mesofauna) organisms, among others, play important roles in improving soil conditions and driving ecosystem stability, nutrient availability, and improvement of soil fertility. These organisms can break down...
  52. AccessAgriculture Training Video Pour résoudre les problèmes de la pauvre fertilité du sol et lutter contre la mauvaise herbe striga avec des moyens limités, certaines producteurs de Niger font la micro dose aux cultures de sorgho et de mil. Comparativement à l’application à la volée, l’apport...
  53. Abstract,Applied Soil Ecology, 2019 Soils account for >80% and 20% of the total agricultural N2O and CO2emissions respectively. Soil management activities that target improved soil health, such as enhancing earthworm activity, may also stimulate further emissions of CO2and N2O. One recommended...
  54. During his years as a scientist working for the British government in India, Sir Albert Howard conceived of and refined the principles of organic agriculture. Howard's The Soil and Health became a seminal and inspirational text in the organic movement soon after its publication in 1945. The Soil...
  55. The object of the book was to draw attention to the loss of soil fertility, brought about by the vast increase in crop and animal production, that has led to such disastrous consequences as a general unbalancing of farming practices, an increase in plant and animal diseases and the loss of soil...
  56. The objective of this publication is to summarize results of field research carried out in Brazil, Peru, Puerto Rico, Colombia, and Ghana as it relates to potassium fertilization on Ultisols and Oxisols.
  57. This booklet tells why organic matter in the soil may be considered our most important national resource. The author describes how it furnishes fuel for bacterial wrecking crews and how it is turned into plant nutrients. He shows that many of our farm practices have enormously reduced the supply...
  58. The purpose of this bulletin is to describe methods applied to utilize nitrogen-fixing systems in soil improvement and management and the consequent increases in crop yields obtainable by these methods. The rest of the integrated systems involved i.e. chemical and physcial manipulations, are...
  59. Field experiments in Kentucky show significant danger in using the Magdoff nitrate test as presently promulgated. The most serious problem seems to be associated with soils which are less than well-drained. It probably is associated with slower nitrification, greater denitrification, greater...
  60. Although it's not too easy, good garden soil has to be achieved and then maintained by a continuous program of good growing practices. The first step in this program is to find out the specific needs of your soil through soil testing. This booklet starts at the beginning and explains how to have...
  61. 26/11/2019 Session: Conservation agriculture (CA) (zero tillage + organic inputs as surface residue) is believed to improve soil nutrient status, soil structure, control soil erosion, and also enhance soil fauna diversity. Despite the widespread interest in CA, empirical evidence of the benefits of CA on...
  62. Two long-term experiments (11 years) showed the intriguing ability ofG. senegalensis and P. reticulatum(optimized at ~1000 to 1500 shrubs ha-1 with residue returnedto soil) to dramatically increase yields of groundnut and millet, with or without fertilizer additions and maintain yields in drought...
  63. The Biochar for Sustainable Soils (B4SS) is a medium-sized project funded by theGlobal Environment Facility(GEF) under the Land Degradation Focal Area in the GEF-5 Strategies. The United Nations Development Programme (UNEP) is the implementing agency, whereasStarfish Initiativesis the executing...
  64. Abstract, Academic Journals, 2018 This paper reviews the impact of soil and water conservation (SWC) measures on crop yield, soil properties, water resources and carbon sequestration. Land degradation due to soil erosion in Ethiopia is too severe which affects the livelihood of a community and...
  65. Session: Conservation agriculture (CA) (zero tillage + organic inputs as surface residue) is believed to improve soil nutrient status, soil structure, control soil erosion, and also enhance soil fauna diversity. Despite the widespread interest in CA, empirical evidence of the benefits of CA on...
  66. Ressource principale
    14/11/2012 Qu’est-ce que la dégradation des terres? Dans le bulletin OMM-No. 989, l’Organisation météorologique mondiale a reproduit la longue définition de l’UNCCD (Convention des Nations Unies sur la lutte contre la désertification). Les éléments les plus pertinents de cette définition pour le réseau de...
  67. It is difficult to rate the importance of the different soil functions, since all are vital to our well-being, to some extent. However, the function ofsupportingfood andagricultureworldwide is fundamental for the preservation and advancement of human life on this planet. Soil is also the basis...
  68. Abstract, PLoS One, 2017 Sustainability of maize-based cropping systems is a major challenge for southern Africa, yet the demand for maize as staple food and animal feed in the region continues to increase. A study was conducted on a sandy clay loam (220 g clay kg-1soil) at Domboshawa in Zimbabwe...
  69. We recognize that poverty in the developing world is multifaceted. For example, saying water security invariably stimulates one to think about the quality of drinking water. This is a serious problem world wide, however, this is not our focus. Spring Rains is targeted at nutritional food...
  70. 17/08/2016 Les agriculteurs et les jardiniers des régions semi-arides et arides du monde sont confrontés à deux problèmes associés mais distincts, qui restreignent les cultures qu'ils peuvent produire et le rendement de ces cultures. Le problème sous-jacent est le manque de précipitations nécessaires pour...
  71. Ressource principale
    01/06/2013 Rick Burnette a écrit un article pour le numéro 6 (Juillet 2010) des Notes d’ECHO pour l’Asie, intitulé « Charcoal Production in 200-Liter Horizontal Drum Kilns » (Production de Charbon de Bois dans des Fours à Tambour Horizontaux de 200 Litres). Mon article pousse le processus de carbonisation...
  72. Ressource principale
    01/01/2014 Pour obtenir une productivité agricole élevée dans les tropiques au meilleur coût économique et écologique, il faut bien comprendre le rapport entre les nutriments présents dans le sol et la productivité des cultures. Pour ce faire, il nous faut remettre en question certaines idées reçues. La...
  73. Abstract, PLOSone, 2019 Knowledge of the geographical distribution of soils is indispensable for policy and decision makers to achieve the goal of increasing agricultural production and reduce poverty, particularly in the Global South. A study was conducted to better understand the soilscapes of...
  74. Abstract, PeerJ, 2019 We found that nitrogen addition affected the soil microbial community structure, and that microbial biomass increased significantly once 100 kgha1a1of nitrogen was added. The interactions between nitrogen addition and plant inputs removal significantly affected soil bacteria...
  75. 31/08/2020 This article is from ECHO Asia Note #43 There are many ways to discuss soil ecosystems, and numerous physical, chemical, and biological terms can become overwhelming. I favor an overall concept called ‘soil health’ because it reminds us soil is alive, and like all living systems, can range from...
  76. 29/01/2019 Plus de 4 millions de personnes dans le Sahel ouest-africain font face à des difficultés suite à des périodes de sécheresse et à la hausse des prix des denrées alimentaires. En juin, la FAO a envoyé près de 10 millions de dollars d'aide aux agriculteurs de la région frappés par la sécheresse, qui...