Now showing items 1-10 of 49
Economic criteria for establishing plant breeding programs
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, ...
Adoption and impact of high yielding wheat varieties in Northern Tunisia
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 ...
Optimal search in ex situ collections of wheat genetic resources
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 ...
Returns to wheat research in Nepal
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 ...
Technical change and wheat productivity in the Indian Punjab in the post green revolution period
Major changes in the wheat economy of Punjab State, India, since the Widespread adoption of modern varieties (MVs) in the early 1970s, are summarized from an analysis of trends in micro-level farm data and by using an index ...
Maize production practices in Paraguay: survey findings and implications for research
Data collected through a survey of 252 rural households support the conventional wisdom that maize in Paraguay is grown by many different categories of producers, ranging from small-scale semisubsistence farmers to large-scale ...
The maize subsector in Paraguay: a diagnostic overview
The maize sector in Paraguay s going through a period of perplexing changes. Despite recent production gains, average maize yields remain far below those which could be achieved with relatively simple changes in management ...
Using economics to explain spatial diversity in a wheat crop: examples from Australia and China
Spatial diversity indicators may serve an important function for policymakers as they seek to manage crop genetic diversity and potential externalities associated with diffusion of some types of genetically improved crops. ...
Farmers' taxonomies as a participatory diagnostic tool: soil fertility management in Chihota, Zimbabwe
Soil infertility is a major constraint to food production in the communal areas of Zimbabwe. Smalholders in the region recognize the problems of low soil fertility and have devised ways of coping with them. This study ...
International collaboration in crop improvement research: current status and future prospects
Investments over the past 35 years have created s system of national and international research centers that has revolutionized the supply of improved cereal varieties to developing country farmers. The newly created ...