Technology Adoption, Productivity Analysis, Climate Change, Tanzania
2. Article / Journal
Smallholder Productivity and weather shocks : Adoption and impact of widely promoted agricultural practices in Tanzania
: Chungmann Kim
2019. 03. 13. (Wed.) - 12:00 ~ 13:30
Seminar room 418, Graduate School of International Agricultural Technology
6. Main contents
○ We investigate the impact of maize-legume intercropping, soil and water conservation practices(SWC), organic fertilizers, inorganic fertilizers and high yielding maize varieties on maize productivity under weather shocks in Tanzania
○ Estimate the determinants of adoption by applying a multivariate panel data model capturing their complementarities and/or substitutability. (Multivariate probit model based on the latent variable approach)
○ After testing for their potential endogeneity, we study the impact of theses practices(and combinations of them) on maize productivity controlling for weather shocks. (Fixed effects 2 stage least squares estimator to solve endogeneity problem)
○ Disaggregate results by presence/absence of seasonal rainfall and temperature shocks to explore the heterogeneous impact of adoption under weather shocks.
○ Found Strong complementarities between agricultural practices both in terms of adoption and yield impacts.
○ Long-run variability in rainfall decreases the adoption of organic fertilizers and increases that of improved seeds
○ Farmers in areas where the cropping season’s rainfall has been highly variable and temperature has been unexpectedly high have significantly lower maize yields.
○ SWC emerges as one of the most important practices in increasing yields with significant benefits by itself, in combination with other practices, under weather conditions as well as under rainfall and temperature shocks.