General Technical Documents

Maize Armyworm and Stalk Borer Scouting - 20/04/2018

The introduction of Fall Armyworm (FAW) (Spodoptera frugiperda) to Africa in 2016 has raised concerns of possible widespread damage of maize and other crops. Stalk borers are a common pest of maize throughout Africa, causing modest damage virtually every year. Armyworms, on the other hand, can devastate maize and other crops if not controlled at a young age. Because of this big difference in damage potential, it is important to identify these pests early in their life cycle.

Rangelands Group Framework Worksheet - 08/03/2018

This worksheet was used at the 3rd ECHO East Africa Pastoralist Symposium by a group generating a joint voluntary plan of action including policy and legislation inhibiting or needed, social and cultural approaches that inhibit or could add value, economic tools, and natural resources governance.

Sustained Rangeland Improvement with Special Reference to the Laikipia Controversies - 08/03/2018

I have spent over fifty years working in East African Rangelands studying wildlife in National Parks and ranches or helping pastoralists in northern Kenya and consulting in Tanzania. The situation has changed unpredictably and dramatically since my original research in the Queen Elizabeth National Park in western Uganda. The main change has been rapid and near exponential human population growth with accompanying degradation of the rangelands especially those classified as ASALs (Arid or Semi-Arid Lands). It is not unique to the Greater Horn of Africa, but an example of what has been happening in most countries in Sahelian Africa. A world’s leading expert on deserts concluded over 25 years ago that “all the areas between the 100mm and 300mm isohyets will become man-made deserts in the next 35-70 years if the present trend is not reversed!” (Le Houerou,1991).  Further exacerbating the effects of unchecked population growth is that of global warming, where pastoralists are the victims of the rapid increase in the use of fossil fuels by the world’s increased human population.

Livestock to Markets (L2M) - Action Plan - 08/03/2018

This is an ACTION PLAN based on participation of representatives from three East Africa countries in the L2M Working Group. The group developed a common framework to guide their discussion and understanding of all the elements that influence the development of a Livestock to Markets Business among pastoralist communities. They will use this as a benchmark for their commitment and actions in their respective countries over the next two years.

Permaculture For Refugees in Camps - 20/02/2018

PermacultureForRefugees (P4R) has released their first booklet in a series to bring permaculture solutions to refugee situations. Permaculture for Refugees in Camps is a 20 page how-to guide outlining a positive approaches to transforming refugee camps. It is the culmination of ideas, experience and knowledge based on discussion, writings, research and the shared experience of the founding members of the P4R working group, edited by Ruth Harvey and Rowe Morrow.

The booklet reframes the period of limbo in camps of  enforced idleness and desperation to a time of learning and building relationships to land and  each other. Working from ethics, it introduces eco-design methods, and presents principles and strategies  for empowering disenfranchised communities and giving them permaculture skills and knowledge to take into the next stage whatever it may be.

Bicycle Pump Vacuum Sealer for Seed Storage - 20/01/2018

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 methods used by villagers for saving their own seeds.  All have their strengths and weaknesses, but when balancing costs and resources, which methods are really the most effective?  This article highlights research conducted by ECHO Asia regarding the use of vacuum sealing, using a simple bicycle tire pump, for tropical seed storage under resource-constrained settings.

The three key factors that determine the rate of seed deterioration in storage are: oxygen pressure (amount of oxygen with the seeds in storage), seed moisture content, and temperature (Roberts, 1973).  An increase in any of these factors will lower the storage life of the seeds, and as a general rule any increase of 1% moisture content or 10^° F (5.6^° C) in storage will halve the storage life of the seeds (Bewley and Black, 1985).  Each factor contributes to seed decay in specific ways, and minimizing these conditions is critical to effective seed storage.  Vacuum sealing is a relatively low-cost method that requires few inputs after an initial investment.  Sealing helps conserve seed quality by minimizing oxygen presence and exposure to ambient humidity, thereby keeping seed moisture content low.

Moringa oleifera f-sand Filters for Sustainable Water Purification - 22/11/2017

ABSTRACT: Environmental Science & Technology, 2017

The purpose of this work is to determine parameters for the design of a Moringa seed sand filter for water purification. Moringa oleifera seeds containing cationic antimicrobial proteins have been used as natural coagulants for the removal of turbidity; however, a low removal efficiency and high residual organic levels limit their applications. In this work, Moringa seed extracts were used to reverse the charge of sand ( fsand) to 10 mV at a seed dosage of 5.6 g of seeds/m² of sand. This f-sand filter demonstrated ∼4 log removal of 1 μm polystyrene particles and >8 log removal of Escherichia coli compared to <0.1 log removal for bare sand. Enhanced removal for particles and E. coli was dominated by attractive electrostatic interactions. Clean bed filtration modeling predicts a sticking coefficient (α) of 0.8 for f-sand compared to a value of 0.01 for bare sand. This α was further validated under a wide range of filtration conditions. Preliminary scale-up analyses suggest a point-of-use f-sand filter that requires a very small amount of seeds annually. The outcome of this work presents the scientific basis for the design of a water purification solution for developing regions, requiring only locally available resources and no use of synthetic chemicals or electricity.

ECHO Crop Information Sheet - 08/05/2017

ECHO reguguarly keeps track of crop porduction records especially for crops disseminated from our Global Seed Bank. This fillable form is the sheet ECHO staff (mainly interns) use when evaluating a crop for it's potential use and distribution to ECHO's Network. This form can also be used to monitor and evaluate new crops or regenerated crops. This form was made specifically for ECHO's use, so it may need adapted and reconfigured in order to best suit your needs and your capacity.

Princípios para Orientar a Programação da Agricultura de Conservação - 20/04/2017

Agricultura de Conservação (AC) — Caracterizada pelos três princípios vinculados de minimizar a perturbação do solo, cobrir permanentemente o solo e incluir culturas rotativas e associadas – tem provado ser eficaz para restaurar a saúde e fertilidade do solo, melhorar a captura e uso das chuvas e aumentar os rendimentos das culturas e a rentabilidade agrícola. Estudos científicos e a experiência de agricultores também têm mostrado que pode melhorar a segurança alimentar, reduzir os requisitos de mão-de-obra (levando a benefícios significativos para os pequenos agricultores do sexo feminino) e ajudar a construir sistemas agrícolas mais resistentes às mudanças climáticas. Nas regiões semi-áridas de África, onde grande parte da programação do Canadian Foodgrains Bank (Banco de Cereais do Canadá) está concentrada, as práticas da AC têm demonstrado melhorar a humidade e fertilidade do solo e levar a ganhos substanciais de rendimento.

Ao longo da última década, os parceiros da rede do Canadian Foodgrains Bank (Banco de Cereais do Canadá) implementaram mais de 50 projetos de AC em muitos países diferentes em toda a África Subsaariana. Este impulso estimulou a criação de materiais de recursos, reuniões anuais e outras oportunidades para compartilhar e aprender juntos e a contratar a tempo integral oficiais técnicos da AC.

Esta equipa técnica do CFGB tem estado a recolher aprendizagens e experiência de parceiros, a rever literatura científica e a conversar com outras pessoas envolvidas na programação da AC. Eles usaram essas aprendizagens até agora para desenvolver a seguinte lista de princípios básicos para orientar a programação da AC. Por favor, note que estes são princípios (verdades gerais que orientam a ação) e não leis (regras duras e rápidas acerca do que fazer). Por conseguinte, esses princípios precisam de ser trabalhados, usados e adaptados a situações específicas. Agradecemos muito os seus comentários e pensamentos sobre esses princípios, porque esperamos atualizar estes numa base regular.

Parthenium hysterophorus - 09/02/2017

Parthenium hysterophorus, also known as carrot top, white top weed, and fever few is a fairly new invasive weed but has quickly become one of the worst weeds to tropical areas(CABI 2015). In Ethiopia it is known as Farmasissa which means “sign your land away” (IAPPS 2016). Originally from Central America, Parthenium has been seen to cause major problems in India and Southeast Asia, Australia, and East Africa. In 2015, Parthenium is said to have invaded roughly 34 countries globally (Strathie 2015). A fast growing highly reproductive invasive species, Parthenium has become a hazard to farmland, rangeland, as well as animal and human health.