Table 2: Soil water content (0–200 cm depth) close to silking ( ) and at physiological maturity ( ), maximum fraction of incident PAR intercepted by crops (Maximum fIPAR) and leaf chlorophyll readings (SPAD) close to silking, total biomass production at physiological maturity and grain yield, and harvest index and grain yield components (kernel number, kernel weight, and prolificacy) of maize hybrid DK190MG cultivated with different row spacings (RS) at three landscape positions (P), during 2007/08 ( ). The significance level of main factors and interactions are detailed at the bottom of the table.

Growing season/locationLandscape position/
plant population
Row spacingSoil water contentMaximum
fIPAR
   SPAD
units
Total biomass
(g/m2)
Grain yield
(g/m2)
Harvest indexKernel number
(kernels/m2)
Kernel weight
(mg)
Prolificacy
Ears/plant
(mm) (mm)

2007/08
Summit
(5.8 plants/m2)
38 cm391130.7143.01336.7717.10.543096232.71.03
52 cm431130.7747.61639.6905.60.553743241.61.37
Skip row1772220.7346.11359.9731.60.542973247.91.06
Shoulder-slope
(6.8 plants/m2)
38 cm471180.6942.61418.4748.20.523368221.81.00
52 cm711370.6845.61537.1806.70.513395 238.01.17
Skip row621140.6945.11375.1712.60.503056233.41.04
Foot-slope
(7.8 plants/m2)
38 cm477 5640.8952.42009.01096.00.544340252.01.00
52 cm503 607 0.9156.02125.81168.60.554403265.51.07
Skip row366 415 0.9053.82180.51202.70.554621262.11.18

Significance level of main effects and interactions and critical values for comparisons of the means (in brackets)
P(99.8)***(91.8)***(0.09)**(3.99)**(316.7)**(211)*ns(628)*(20.9) ns
RSnsnsns(2.61)nsnsnsnsns(0.12)*
P * RSns(119.6)*nsnsnsnsnsnsnsns

Significant level: , * , ** , *** .