Fig. 5.

Mean transpiration efficiency (TE) for maize, sorghum, and pearl millet grown in different soil types in lysimeters in the field under well-watered conditions. (A) Experiment 3 with relatively high vapor pressure deficit (VPD) and (B) Experiment 4 with relatively low VPD (Fig. 1). Data are means (±SE) of three genotypes in each species (Table 1), with five replicate plants being sampled to determine a mean value for each genotype. Bars indicating the LSD at P<0.01 between the soil treatments within a species are shown. In (A) the LSD to compare differences in TE between species is 0.37 g biomass L⁻¹ water transpired. In (B) the LSD to compare differences in TE between species is 0.25 g biomass L⁻¹ water transpired.