Skip to main content

Table 8 Regression of maize grain yield on various factors across selected administrative regions of Ethiopia (2004–13)

From: Factors that transformed maize productivity in Ethiopia

Factors Parameters Administrative Regions
Ethiopia Oromia Amhara SNNP Tigray BSG
Area under MVs (%) b-value 0.50*** 0.40** 0.40*** 0.49*** 1.58 0.84**
R2 0.84 0.67 0.86 0.78 0.11 0.73
Area under NP fertilizer (%) b-value 0.51** 0.32* 1.04* 0.74** 0.51 0.20
R2 0.60 0.47 0.34 0.65 0.30 0.02
NP application rate (kg/ha) – overall maize growers b-value 0.77*** 0.56* 0.39** 0.79* 0.47 1.05*
R2 0.09 0.06 0.13 0.27 0.22 0.01
NP application rate (kg/ha) – exclusively those applying applying fertilizers b-value 0.18 −0.13 0.22 0.21 0.08 −0.05
R2 −0.09 −0.12 0.23 −0.04 −0.08 −0.13
Area under organic fertilizer (%) b-value −1.31* −0.62 −0.86*** −1.56** −0.05 −1.31**
R2 0.52 0.10 0.81 0.73 0.06 0.73
  1. *, **, and *** denote significant difference from zero at p < 0.05, p < 0.01 and p < 0.001 levels, respectively (source: calculated by the authors from CSA www.csa.gov.et)