1) The study measured soil carbon sequestration on commercial Miscanthus fields in Ireland and found measurable increases in soil carbon even 2-3 years after planting, with no significant losses of pre-existing soil carbon. 2) Results varied significantly between farms, with field patchiness found to strongly impact yields and soil carbon sequestration. 3) Factors like bulk density, soil texture, and the proportion of soil derived from Miscanthus influenced carbon sequestration rates across sites.