Extended Data Table 1: Summary statistics of estimation dataset by fertilizer management strategy.
From: Profitability of climate-smart soil fertility investment varies widely across sub-Saharan Africa
The left three columns show raw means (and standard deviations) of the explanatory variables by fertilizer use, along with the normalized difference between fertilized and non fertilized observations. The right three columns show mean (and standard deviation) of the explanatory variables weighted (wgt) by the site-level probability of including some no-fertilizer observations. Technologies and management practices predictors \(\overline{\theta }\) include use the Fertilized plot dummy, the OFRA trial indicator, and the hybrid variety indicator. Site characteristics predictors (Xi) include cation exchange capacity, soil pH, soil exchangeable acidity, soil organic matter, total soil nitrogen, soil clay share, soil silt share, soil bulk density, elevation, and a poor drainage indicator. The weather realization predictors (ωit) include average temperature over three growing season segments and total precipitation over three growing season segments.
