Table 1.

Pooled P values from weeks 6 and 24 for growth, leaf chlorophyll and carotenoid concentration, chlorophyll fluorescence (Fv/Fm), and photosynthetic rates (Pn) following sugar treatments. P < 0.05 are considered significant.

	Factor
	Girth	Shoot dry weight	Leaf dry weight	Root growth potential	Root length	Root dry weight	Chlorophyll content	Carotenoid content	Fv/Fm	Pn
1999 trial
Sugar (S)	0.110	0.895	0.963	0.109	0.780	0.263	0.013	0.050	0.001	0.261
Concentration (C)	0.659	0.998	0.941	0.654	0.906	0.731	0.659	0.444	0.443	0.668
S × C	0.418	0.636	0.883	0.357	0.963	0.835	0.804	0.231	0.311	0.780
2003 trial
Sugar (S)	0.696	0.241	0.026	0.071	0.084	0.009	0.008	0.088	0.003	0.202
Concentration (C)	0.603	0.491	0.013	0.654	0.906	0.539	0.601	0.564	0.649	0.592
S × C	0.524	0.732	0.788	0.357	0.635	0.704	0.774	0.298	0.505	0.669