Determinants of Cereal Diversity in Communities and on House-hold Farms of the Northern Ethiopian HighlandsILRI (aka ILCA and ILRAD), 2003 M01 1 - 45 pages On farm conservation of crop diversity poses obvious policy challenges in terms of the design of appropriate incentive mechanisms and possible trade-offs between conservation and productivity. This paper compares factors explaining the inter-specific diversity (diversity among species) and infra-specific diversity (diversity among varieties within a species) of cereal crops grown in communities and on individual farms in the northern Ethiopian highlands. |
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adjusted for stratification agricultural Amhara and Tigray Amhara regions analysis area shares barley Bellon cereal crop diversity cereal diversity cereals grown clustering of sample community level crops and varieties cultivated Distance to road diversity indices diversity maintained diversity of cereals Dusen economic erosion errors are adjusted Ethiopian highlands Exogenous income explaining variation explanatory variables factors affecting Farm fragmentation farmers finger millets genetic diversity genetic resources highlands of Amhara Household characteristics household farms hypothesised effect improved variety infra-specific diversity inter inter-specific diversity Inverse mills ratio irrigation labour land landraces least absolute deviation Location in Tigray maize northern Ethiopia Number of observations number of varieties on-farm conservation Oxen ownership pearl and finger pearl millet plant Poisson regression Population density positively associated Regression results Richness Count index seed Shannon index Smale soil sorghum specific standard errors Statistically significant Table teff Tigray and Amhara Tigray regions trade-offs varieties grown variety diversity weighting and clustering