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. Recurso clave
    1/1/2002 Acidification of soil is a natural process with major ramifications on plant growth. As soils become more acid, particularly when the pH drops below 4.5, it becomes increasingly difficult to produce food crops. As soil pH declines, the supply of most plant nutrients decreases while aluminum and a...
  2. Recurso clave
    20/1/2009 Todas las plantas necesitan de ciertos elementos minerales para el crecimiento y desarrollo adecuado, y mantenimiento. La estructura básica de todos los organismos es construido de carbono (C), oxigeno (O) e hidrogeno (H). Las plantas obtienen estos elementos del agua (H2O) en el suelo y del...
  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. Recurso clave
    23/7/2015 El cambio climático tendrá un fuerte impacto sobre las personas más pobres del mundo. Los rendimientos de los cultivos ya han disminuido en el trópico y se proyecta que caigan en un 15-30% para el año 2080 en África, el sur de Asia y en Centroamérica (Hoffman 2013). Algunos países podrían...
  5. 20/1/2002 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 La calidad del suelo, también conocida como salud del suelo, es su capacidad para funcionar– cuán bien desempeña los papeles que necesitamos de él, ya sea en un ecosistema natural o manejado. Para evaluar la salud del suelo se utiliza una variedad de medidas y si bien podemos utilizar estas...
  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. 15/2/2017 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. Agricultura Sostenible para Productores a pequeña escala en Nicaragua La misión de BioNica es proporcionar entrenamiento en Nicaragua acerca de cómo recuperar el suelo desgastado. “Cultivar el suelo” para que el suelo pueda dar cosechas balanceadas con alto valor nutricional. Los participantes...
  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. 1/10/2005 La mayoría de los cultivos en los trópicos de tierras bajas se desarrollan mejor con una sombra del 10 al 15 por ciento, la cual puede ser obtenida sembrando árboles cada 10 o 15 metros en todas las direcciones. Muchos pequeños productores ya utilizan esta técnica, especialmente en el sureste de...
  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 In Kenya, small-scale farmers stabilise river banks and reduce rainwater runoff from nearby plots by planting trees and grasses.
  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 A 22-minute video to explain the importance of combining organic resources mineral fertilizer and improved varieties in ways that are adapted to local conditions. Practical examples are shown from various agro-ecological zones in Mali, Niger, Nigeria, DR Congo,...
  23. AccessAgriculture Training Video Onions have few roots and shallow roots and therefore can take up nutrients from the top soil only. This explains why it is crucial to pay particular attention to making your soil fertile when you want to grow onions. Arabic Bambara Bariba Dagbani Dendi English...
  24. AccessAgriculture Training Video Onions need rich, fertile soil. Only grow onions once in 3 years in the same field. Plant the onions on raised beds, especially in the rainy season. Transplant when the onions are about 6 weeks old. Plant the onions 10 centimetres apart. By taking good care of...
  25. AccessAgriculture Training Video In semi-arid West Africa, farmers and herders explain why and how trees and livestock play a crucial role in obtaining a productive soil and crop. In Niger and Ghana this is one of the strategies of integrated striga and soil fertility management that has a...
  26. AccessAgriculture Training Video In this video you can learn all about nutrients, soil structure, organic matter and how to maintain fertile soil. All this will allow you to keep on cultivating your land and producing healthy crops. Ateso Chichewa English French Kiswahili Luganda Lugbara Luo...
  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. 20/4/2001 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. 6/2/2018 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. 3/10/2017 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. 20/1/2011
  38. 13/2/2019 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 La calidad del suelo, también conocida como salud del suelo, es su capacidad para funcionar– cuán bien desempeña los papeles que necesitamos de él, ya sea en un ecosistema natural o manejado. Para evaluar la salud del suelo se utiliza una variedad de medidas y si bien podemos utilizar estas...
  46. 20/7/2007 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. Pueden diagnosticarse cuatro deficiencias de nutrientes—fósforo, potasio, nitrógeno y magnesio—observado las hojas del maíz. Este documento incluye fotos de hojas sanas de maíz y hojas que muestran cada una de las deficiencias de estos nutrientes. También contiene sugerencias de cómo abordar cada...
  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 To resolve the problems of poor soil fertility and to fight against the striga weed with limited means, some farmers in Niger apply micro-doses to their sorghum and millet crops. Compared to broadcasting, the localised application of micro-doses requires less...
  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. Recurso clave
    14/11/2012 La UNCCD estima que más de 250 millones de personas quedan afectadas por la degradación de terrenos, y casi mil millones de personas en más de 100 países están en peligro. Según la WMO, 33% de la superficie de la tierra es vulnerable para la degradación de terreno. En términos más regionales,...
  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. 17/8/2016 Los productores y hortelanos en las regiones semi-áridas y áridas del mundo enfrentan dos problemas asociados pero separados que limitan los cultivos que pueden sembrar y su rendimiento. El problema subyacente es la falta de las lluvias necesarias para la siembra de las plantas. El segundo es la...
  71. Recurso clave
    1/6/2013 Rick Burnette escribió un artículo para la Edición 6 (julio de 2010) de las Notas de ECHO Asia, con título “Charcoal Production in 200-Liter Horizontal Drum Kilns” (Producción de Carbón en Hornos de Barriles Horizontales de 200 litros). Mi artículo nos lleva un paso más adelante en el proceso de...
  72. Recurso clave
    1/1/2014 A fin de lograr niveles altos de productividad agrícola en los trópicos al más bajo costo posible tanto en términos económicos como ecológicos, necesitamos comprender adecuadamente la relación entre los nutrientes en el suelo y la productividad de los cultivos. Para que esto suceda, 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. 31/8/2020 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. 29/1/2019 Más de 4 millones de personas en las zonas sahelianas del África Occidental enfrentan dificultades tras períodos de sequía y el aumento del precio de los alimentos. En junio, la FAO envió casi US$10 millones en ayuda para los productores azotados por la sequía en la región, los cuales dependen de...