By Robert E Evenson, Douglas Gollin
This e-book reviews at the productiveness affects of varietal development learn carried out at a few foreign centres affiliated with the Consultative staff on overseas Agricultural study. Such centres were on the vanguard of a 40-year attempt to reproduce new different types of the world's staple nutrients vegetation. The contributed chapters are the most fabricated from a examine initiated and supported through the impression review and assessment crew (now the status Panel on impression overview) of the CGIAR. Descriptive facts and econometric versions were used to guage the influence of study on eleven vegetation and kingdom case stories in Brazil, China and India. The contents comprise an creation and method part (3 chapters); crop experiences on rice, wheat, maize, sorghum, pearl millet, barley, lentils, potato, cassava, groundnut and customary bean (Phaseolus vulgaris); case stories in Brazil, China and India; and a suite of three synthesis papers reporting international and neighborhood affects on construction and human welfare. The ebook should still turn out of vital curiosity to these operating inside of plant breeding, crop technology and agricultural economics. to be had In Print
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Additional info for Crop variety improvement and its effect on productivity: the impact of international agricultural research
Seventeen Latin American NARS (88 breeders) had bean programmes in the 1970s. Only two programmes were active in Africa in the 1970s, but by 1998, 12 programmes in Africa (40 breeders) were operating. CIAT in Colombia has been supporting bean improvement research for a number of years. 5 N IA IX 1980 1990 Years Adoption shares 100% 80% N 60% IX/IA 40% M 20% T 0% 1990 1998 Years Fig. 6. Varietal releases and adoption shares: barley. T = traditional variety; M = modern varieties; IX = IARC crosses; IA = NARS crosses, IARC ancestors; N = NARS crosses, NARS ancestors.
Food prices have fallen in all countries and consumers have benefited. However, for farmers, it is the local dimension of food security that has mattered most. When prices decline and costs do not, farmers are harmed. Varietal improvement programmes have not delivered modern crop varieties to all farmers and, for many farmers, access to modern varieties is a recent phenomenon. Both biological and political factors contribute to the uneven delivery of improved crop varieties to farmers. CGI programmes should be assessed against both global and local food security dimensions.
This volume consists of an introductory section (Chapters 2 and 3) and three main parts. Chapter 2 gives an overview which is designed to pick out some recurring themes and central messages from the subsequent chapters, and Chapter 3 offers a survey of methodological issues related to crop improvement studies. Part II (Chapters 4–16) focuses on studies of individual crops and regions, with each chapter highlighting the experience of a single IARC with a particular crop. g. g. Chapter 6 on rice in West Africa).