Table 1.

Clay, Fe₂O_3, Al₂O_3, and SiO₂ contents in the layer of 0.0 to 0.40 m depth, the amounts of Si absorbed by sugarcane plants, and sugarcane stalk yield in clayey, sandy-loam and sandy soils.

Site	Soil	Soil texture	Clay	Fe2O3	Al2O3	SiO2	Si absorbed	Stalk yield
			_____________ g kg−1 _____________				kg ha−1	Mg ha−1
1	Oxisol	Clayey	473	35.9	2.7	0.53	221	87
2	Oxisol	Clayey	470	37.4	2.3	0.42	204	85
3	Oxisol	Clayey	502	34.0	2.1	0.33	167	73
4	Ultisol	Sandy-loam	226	10.6	0.9	0.37	338	123
5	Ultisol	Sandy-loam	218	12.3	0.8	0.38	299	131
6	Ultisol	Sandy-loam	193	12.9	0.9	0.30	283	108
7	Ultisol	Sandy	112	10.0	0.5	0.26	265	109
8	Ultisol	Sandy	109	9.1	0.6	0.31	215	102
9	Ultisol	Sandy	99	9.3	0.6	0.23	288	125

Mean values of 24 replicates.