Table 2.-Mean squares from the analysis of variance of the effects of water table control and fertilization on mensurational
data and biomass of 5-year-old slash and loblolly pines.

 Degrees of Above-ground Fine Total
Source of Variation Freedom Height Diameter Volume Biomass Roots Roots
 x102 x10' x108 x10

Water tables (W) 2 8.165** 24.788** 60.45** 182.30** 0.23 3.23**
Blocks w/i water tables 6 0.103 0.542 1.35 1.59 0.42 0.17
Fertilizers (F) 1 2.392** 2.717 18.52** 43.00* 31.90** 1.36*
Species (S) 1 20.461** 68.145** 157.50** 406.20** -
S x F 1 0.007 0.045 7.53 13.61 -
W x F 2 0.138 0.497 4.40 6.56 0.32 0.18
W x S 2 0.136 2.046 2.74 4.90 -
W x S x F 2 0.038 0.289 1.32 1.15 -
 Error 18 0.221 1.111 2.19 7.46 0.43 0.19

 denotes statistical significance at the 95% confidence level.
** denotes statistical significance at the 99% confidence level.