Becausethesiliconsourcewaspotassiumsilicate,thetrialwasbalancedtouniformityforthesuppliedpotassiumusingpotassiumchloride.Therewasalsoapotassium-only(potassiumchloride)treatment,appliedat14poundspotassium/acre(15.6kilograms/hectare),whichwasalsotherateofpotassiumappliedwiththehighestpotassiumsilicatetreatment.