Cw. Deren, CHANGES IN NITROGEN AND PHOSPHORUS CONCENTRATIONS OF SILICON-FERTILIZED RICE GROWN ON ORGANIC SOIL, Journal of plant nutrition, 20(6), 1997, pp. 765-771
Rice grown on the organic soils of the Everglades is routinely fertili
zed with silicon (Si). The objective of this research was to investiga
te changes in nitrogen (N) and phosphorus (P) concentration in various
plant parts in response to Si fertilization. Two cultivars were grown
in lysimeters filled with low-Si soil. Half the lysimeters were ferti
lized with calcium silicate to provide 2Mg Si ha(-1) and the other lys
imeters remained unfertilized as a control. Nitrogen concentration dec
reased in all plant parts with Si fertilization. Phosphorus concentrat
ion increased with Si. Maturity was earlier in the Si fertilized rice.