Linkage between and determinants of organic fertilizer and modern varieties adoption in the Sahel
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In this paper, the authors analyze the linkage between and the determinants of organic fertilizer
and modern varieties (MVs) adoptions in Burkina Faso. Using simultaneous recursive and
endogenous switching probit models, we found a positive joint determination along with a negative
endogeneity between the two technologies, indicating controlling for observable variables adoption
decisions of the two technologies are positively correlated, but unobserved factors that affect one
decision are negatively correlated with the other, or vice versa. After controlling for jointness and
endogeneity, we found a significant positive effect of organic fertilizer application on MVs
adoption. But, the two technologies are reversely affected by household head’s attending formal
education and the incidence of soil fertility problem within the farm. The size of good land holding
appears to have a positive effect on both adoption decisions. Other factors that significantly affect
MVs adoption with positive effect are number of cashcrop grown and remittances. The study
suggests that organic fertilizer can serve as enabling factor for greater adoption of MVs, especially
in less favourable climate areas. In areas where farmers invest less in inorganic fertilizer because
of higher climate and market risks, organic fertilizer can serve as an effective alternative to replace
inorganic fertilizer in the adoption process of MVs. Policies to promote green revolution
technologies in Sub-Saharan Africa could be more effective if jointly associated with the promotion
of conservation agriculture technologies.