Silicon Produces Significant Yield Increases in Sugar Cane

By: Sugar Research and Development Corporation and CSIRO


The trials were conducted over a variety of locations across Queensland cane growing areas.

Silicate materials

Materials used were a number of calcium silicate slags, cement kiln dust, wollastonite, diatomaceous earth, mill ash (from cane stalk furnaces), a liquid potassium silicate, acidulated serpentine


The trial work was dedicated to sugar cane.

  • “Demonstrated significant yield responses were recorded” after additions of silicate material to sugar cane crops.
  • In Innisfail there was “a 32% increase in yield, at Mossman a 35% increase and in Bundaberg a 23% increase over the controls” with crop cycles of two to three years.
  • The same trial work showed that “the calcium silicate materials improved the nutrient exchange capacity (the cation exchange capacity) of the soils they were applied to”.




Sugar Research and Development Corporation Project CLW009 (22 August 2005)

 “Improving yield and ccs in sugarcane through the application of silicon based amendments”