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 ...

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, ...

This paper describes and analyzes some of the impacts of wheat improvement research in seven countries in the Eastern and Southern regions of Africa. the countries South Africa, Ethiopia, Sudan, Kenya, Zimbabwe, Tanzania, ...

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 ...

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 ...

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 ...

This study presents in detail the themes explored in the CIMMYT publication, World Wheat Facts and Trends, Report 2 (1983). It looks at changes in wheat consumption in developing countries, examines the increasing importance ...

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 ...

Plant breeding by research has become increasingly isolated from the plant breeding of farmers. Collaborative plant breeding (CPB) offers the possibility of bringing these two plant breeding traditions together to increase ...

Improvements in the production characteristics of quality protein maize (QPM) are currently leading to its reintroduction in various areas of the world, both for human and animal consumption. Although the improved QPM ...