Row Spacing, Landscape Position, and Maize Grain Yield

Figure 1

Volumetric water contents of soil profiles (0–200 cm depth) at silking (R₁) and physiological maturity (R₆) of maize crops cultivated at three landscape positions (summit, shoulder-slope position, and foot-slope position) and three row spacings (0.38 m, 0.52 m, and 0.38 m in a 2 × 1 skip-row pattern) during 2006/07 (location 1; L₁). Values are the mean ± standard error of three replicates. Dotted lines indicate volumetric water contents at lower limit, upper limit, and saturation determined in laboratory.