Applying Sewage Sludge to Eucalyptus grandis Plantations: Effects on Biomass Production and Nutrient Cycling through Litterfall

Table 7

Mean dry matter and nutrient amounts in the leaf litter accumulated on the soil surface in each treatment (average for the four seasons, the third year after planting).

Treatment	Biomass		N		P		K		Ca		Mg		S
	Mg ha^−1		kg ha^−1
Control	2.9	a	37.4	a	1.3	a	1.5	B	18.9	b	5.7	B	2.5	a
Mineral fertilizer	3.9	a	46.7	a	1.6	a	2.5	A	26.2	a	7.9	A	2.9	a
Wet sewage	3.3	a	39.3	a	1.6	a	2.3	a b	19.6	b	4.6	B	2.2	a
Dry sewage	3.7	a	44.0	a	1.9	a	2.8	A	24.7	a	5.5	B	2.7	a

Significant differences (𝑃<.05) among treatments indicated by different letters in the same column.