Effects of Organic and Inorganic Materials on Soil Acidity and Phosphorus Availability in a Soil Incubation Study

Table 3

Average chemical composition of tithonia and farmyard manure used in the study over the three seasons.

	m.c.	% C	% N	C : N ratio	% P	% Ca	% Mg	% K	pH	% Lig	% Poly
Tithonia	80%	42	3.1	13.5	0.30	2.0	0.6	4.1	6.5	13	3.17
FYM	30%	36	1.8	20.0	0.40	0.9	0.5	2.2	7.7	21	0.84

FYM: farmyard manure; lig.: lignin; poly.: polyphenol; m.c.: moisture content.