Contents 



Foreword vii 



Preface ix 



1 Food Production: Problems and Prospects 1 



2 Investment in Agricultural Research and Extension: 15 

 A Survey 



3 International Diffusion of Technology: A Case Study 34 

 of Sugarcane Varieties 



4 Research and Productivity in Wheat and Maize: 58 

 An International Analysis 



5 Aggregate Analysis of Research and Productivity 78 

 in Agriculture 



6 Research, Extension, and Aggregate Agricultural 88 

 Productivity in a Major Developing Country: 



The Case of India 



7 The Process of an Innovation Cycle 120 



8 A Simple Model of Technological Research 140 



9 Economic Implications 156 



Appendixes 



1 Agricultural Research and Extension — Country Data, 165 

 1965 



2 Yield, Area, and Publication in Wheat and Maize by 170 

 Country 



3 Regional Classifications 174 



4 The Transferability Factor 176 



5 The Research Variable 177 



