Buscar
Mostrando ítems 1-10 de 152
Book
Bunt and smut diseases of wheat: concepts and methods of disease management
(CIMMYT, 1996)
Five bunt and smut diseases are regularly associated with wheat ( Triticum spp.). These are: common bunt (Tilletia spp.), dwarf bunt (T. controversa), Karnal bunt (T. indica), loose smut (Ustilago tritici), and flag smut ...
Book
Returns to wheat research in Nepal
(CIMMYT, 1992)
An economic surplus approach is used to analyze economic returns to wheat research (primarily breeding) in Nepal. During the past 30 years, investment in wheat research has generated an internal rate of return ranging from ...
Book
Farmers' wheat seed sources and seed management in the Enebssie area, Ethiopia
(IARC; CIMMYT, 1998)
This study in Enebssie area, Ethiopia, aimed to identify farmers' wheat seed acquisition and transfer mechanisms; explore problems related to those mechanisms; document the status of previously released wheat varieties; ...
Book
Economic policy and technology determinants of the comparative advantage of wheat production in Sudan
(CIMMYT, 1993)
Relative profitability and the domestic resource cost (DRC)methodology are used to evaluate the comparative advantage of irrigated wheat versus cotton in Sudan's Gezira Scheme. Relative profitability analysis reveals the ...
Book
Economic criteria for establishing plant breeding programs
(CIMMYT, 1991)
A general model of annual costs and lagged annual returns from a plant breeding program is developed to estimate the threshold sizes of a crop industry at which different breeding programs could be economically justified, ...
Book
Optimal search in ex situ collections of wheat genetic resources
(CIMMYT, 1998)
This paper develops a theoretical model for analyzing gene bank management decisions regarding the search for traits of economic value in ex situ collections of wheat. The model is applied to data on the probability of ...
Book
Adoption and impact of high yielding wheat varieties in Northern Tunisia
(CIMMYT, 1996)
This study assesses the extent to which durum and bread wheat high yielding varieties (HYVs) have been adopted by farmers in northern Tunisia, a region which accounts for more than 80 degrees ' of the nation's durum wheat ...
Book
Modeling the aggregate effects of technological change on income distribution in Pakistan's favored and marginal production environments
(CIMMYT, 1991)
This study investigates the impact on interregional income distribution of the diffusion of improved technologies for wheat production in Pakistan. A multimarket model is developed that captures both direct productivity ...
Book
Applications of raised-bed planting systems to wheat
(CIMMYT, 1997)
Wheat has traditionally been planted in solid stands, especially in irrigated environments and rainfed production systems with moderate to high rainfall. Wheat is usually planted by either drilling closely spaced rows 10-30 ...
Book
The bacterial diseases of wheat: concepts and methods of disease management
(CIMMYT, 1997)
The most common bacterial pathogens that attack wheat are grouped under the names Xanthomonas translucens and Pseudomonas syringae. Pathovars (bacterial strains pathogenic to a specific host or hosts) included in X. ...