Varietal Adoption, Outcomes and ImpactT SWalkerauthorJAlwangauthorAAleneauthorJNdjuengaauthorRLabartaauthorYYigezuauthorADiagneauthorRAndradeauthorR MAndriatsitohainaauthorH DGrooteauthorKMauschauthorCYirgaauthorFSimtoweauthorEKatungiauthorWJogoauthorMJaletaauthorSPandeyauthorDKumara CharyuluauthorParallel to the preceding chapter, we synthesize the results of Chapters 6–17 here. The focus is on outcomes and impacts. Outcomes centre on varietal adoption and turnover; impacts refer to changes in on-farm productivity, poverty and food security. Hypotheses from Chapter 3 are revisited at the end of each thematic section...Agricultural ResearchAfrican AgricultureSub-Saharan Africa2015CGIAR and CAB InternationalBook Section