THE DETERMINANTS OF CEREAL CROP DIVERSITY ON FARMS IN THE ETHIOPIAN HIGHLANDS

On farm conservation of crop diversity entails policy challenges, especially when the diversity of crops maintained on farms has both inter-specific (among crops) and infra-specific (within a crop) components. Survey data is used to compare the determinants of inter- and infra-specific diversity on household farms in the highlands of northern Ethiopia. Physical features of the farm, and household characteristics such as livestock assets and the proportion of adults that are men, have large and significant effects on both the diversity among and within cereal crops grown, varying among crops. Demographic aspects such as age of household head and adult education levels affect only infra-specific diversity of cereals. Though there are no apparent trade-offs between policies that would enhance one type of diversity (richness) versus another (evenness), those designed to encourage infra-specific diversity in one cereal crop might have the opposite effect on another crop. Trade-offs between development and diversity in this resource-poor system are not evident. Market-related variables and population density have ambiguous effects. Education positively influences cereal crop diversity. Growing modern varieties of maize or wheat does not detract from the richness or evenness of these cereals on household farms.Crop Production/Industries,

Determinants of adoption of improved forage technologies in crop-livestock mixed systems: Evidence from the highlands of Ethiopia

Inadequate feed and nutrition are major constraints to livestock production in sub-Saharan Africa. National and international research agencies, including the International Livestock Research Institute (ILRI), have developed several feed production and utilisation technologies. However, adoption of these technologies has so far been low. Identification of the major socio-economic and policy factors influencing the adoption of improved feed technologies is required to help design policy and institutional interventions to improve adoption. Using a panel data set from the crop-livestock mixed systems of the Ethiopian highlands, we found that household resource endowment, especially land and labour, and market integration and crop intensification were important factors encouraging adoption of an oats-vetch (Avena sativa and ITcia villosa ssdasycarpa, respectively) forage technology. Results imply that land-saving technologies such as high-yielding crop varieties or modern soil fertility management practices, the development of forage technologies that are complementary to food crops in land utilisation, and the development of livestock markets can enhance adoption of improved forage technologies

Traditional cow and camel milk production and marketing in agropastoral and mixed crop-livestock systems: the case of Mieso District, Oromia Regional State, Ethiopia

This study was conducted to characterize the traditional milk production and marketing system, and to identify constraints and opportunities for further development. It was conducted in Mieso District of Oromia Regional State, located 300 km east of Addis Ababa and at about 200 km east of Adama. Five rural kebeles, Dire Kalu, Gena, Huse Mendera, Hunde Misoma and Welda Jejeba, that have milk production potential were selected. Farmers/agro-pastoralists from each rural kebele were also selected. Group discussion was conducted with key informants such as elders and experts in the Office of Pastoral and Rural Development to have an overview of the overall milk production and marketing system. The information generated in participatory rural appraisal phases was used for the preparation and development of a questionnaire for the formal survey. The formal survey was conducted by trained enumerators in 2005/06 using 120 farmers. To capture gender effects in the overall production system, the sample household on each rural kebele was stratified into female-and male-headed households. For the market study, from the three existing market sites, Mieso and Asebot markets were purposively selected. Milk marketing was monitored during the rainy and the dry seasons. A questionnaire was used to collect information on the amount of milk delivered, price and number of individuals who sell milk. During the monitoring phase, a diagnostic survey was undertaken to identify households that have lactating cows and/or camels in the selected five rural kebeles. There were generally two types of milk outlets identified in the district. These are traditional milk associations or groups and individual sellers. Feed scarcity, water shortage, security problem and limited access to veterinary services were identified as the major problems to dairy production and mortality due to diseases was also identified as a major cause of loss in cattle. The paper concludes with recommendations

Aggregation of frictional particles due to capillary attraction

Capillary attraction between identical millimeter sized spheres floating at a liquid-air interface and the resulting aggregation is investigated at low Reynolds number. We show that the measured capillary forces between two spheres as a function of distance can be described by expressions obtained using the Nicolson approximation at low Bond numbers for far greater particle sizes than previously assumed. We find that viscous hydrodynamics interactions between the spheres needs to be included to describe the dynamics close to contact. We then consider the aggregates formed when a third sphere is added after the initial two spheres are already in contact. In this case, we find that linear superposition of capillary forces describes the observed approach qualitatively but not quantitatively. Further, we observe an angular dependence of the structure due to a rapid decrease of capillary force with distance of separation which has a tendency to align the particles before contact. When the three particles come in contact, they may preserve their shape or rearrange to form an equilateral triangle cluster - the lowest energy state - depending on the competition between attraction between particles and friction. Using these observations, we demonstrate that a linear particle chain can be built from frictional particles with capillary attraction.Comment: accepted for Physical Review

A Farmer-based fruit seedling supply system in Dale Pilot Learning Woreda (PLW): experiences from IPMS

Dale Woreda is well known for its avocado (Persia americana) and to a lesser extent mango (Mangifera indica) production. These fruit trees are planted along with coffee (Coffee arabica), enset (Enset ventricosum) and other crops. They are important sources of income and food, playing a considerable role in the livelihood of thousands of smallholder farmers of Dale. However, the varieties found in the area have large canopies that reduce land availability for other crops. They are also tall (10-15 m) thus harvesting becomes a challenge, particularly for women. Market prices for these varieties are low and during collection, there is considerable fruit loss when they fall, causing cracks and bruises and hence their rejection. The trees also take 7- 10 years to bear fruit and farmers mention that the land can be used more productively and therefore want to replace fruit trees with other more profitable crops. The diagnostic survey carried out by Improving Productivity and Marketing Success (IPMS) of Ethiopian farmers’ project identified some of the above production constraints as the major area of intervention. Further study was conducted by the International Centre for Research on Agro Forestry (ICRAF) which confirmed the above problems and suggested introduction of improved variety through grafting as one of the best solution to improve the quality of seed, reduce size and height as well as improve productivity and marketability of these varieties. Taking the experience of Dale for coffee seedling production where farmer’s nurseries have taken over 95% of seedling production, the Dale partners decided to use farmers’ nurseries as the base to start production of grafted seedlings. Using participatory extension methods with the help of various partners, the number of private nursery operators increased from the initial six (3 females) to 20 (7 female) in 2009. The number of seedlings produced has now reached 12,000 annually and this can be easily expanded since scions can now be obtained from mother trees established earlier in each of the nursery sites. Currently, seedlings are sold at around Birr 15/seedling to neighboring farmers, some on credit provided by the nursery operators. Linkages with the Productive Safety Net program are made to facilitate the scaling out of the sale of seedlings to emerging commercial farmers. Nursery operators earned between Birr 4,000–7,000 per year from these operations. Further skills development can still be made to improve survival rates of grafted seedlings. Attention will also need to be paid to the marketing of these improved varieties as well as the development of a responsive support system providing fresh knowledge, building capacity and new technologies

Policies for sustainable land management in the highlands of Tigray, northern Ethiopia

The papers presented at this workshop dealt with a wide array of topics related to land management in the highlands of Tigray. The papers reported results on the causes and implications of agricultural change and land management; the status and determinants of soil fertility; land use; land transactions and impact of tenure security on land investment; policies and institutions for livestock development and sustainable land use; community woodlot and grazing land management; comparative analysis of community and private tree plantations; the economic return to and impacts of policies affecting land management; and the role of extension in sustainable land management in the region. This project characterises the problems of land management; identifies dominant pathways of development in the region and their causes; determines the past and current impacts of different factors on land management; strengthens the capacity of collaborating organisations in Tigray to conduct policy research and analysis related to land management; and helps facilitate adoption and implementation of policy and institutional strategies to improve land management in the highlands of Tigray

An analysis of milk production, butter marketing and household use of inputs in rural Ethiopia

Global Affairs Canad