Table 15.-Summary of the analysis of variance of the effect of water table control and fertilization on element concentrations in tree components of 5-year-old slash and loblolly pines. Source of Variation N P K Ca Mg Al Mn Zn Foliage Water table (W) Water table x Block Fertilizer (F) Species (S) SxF WxF WxS WxSxF Branches Water table (W) Water table x Block Fertilizer (F) Species (S) SxF WxF WxS WxSxF Bolebark Water table (W) Water table x Block Fertilizer (F) Species (S) SxF WxF WxS WxSxF Bolewood Water table (W) Water table x Block Fertilizer (F) Species (S) SxF WxF WxS WxSxF Fine Roots Water table (W) Water table x Block Fertilizer (F) WxF Lateral Roots Water table (W) Water table x Block Fertilizer (F) WxF Tap Roots Water table (W) Water table x Block Fertilizer (F) WxF ** ** ** ** ** ** ** ** ** ** *::: :r** ** S* ** ** ** ** .i+ ** * ** ** * ** ** **: ** ** ** ** ** ** ** * **: ** ** ** ** ** o* :* ** ** 1' ** ** * ** ** * * * ** * * denotes statistical significance at the 95% confidence level. ** denotes statistical significance at the 99% confidence level.