attribute Sampling is typically performed at sequential developmental stages/time intervals through crop growth. Cut all aboveground biomass in a predetermined area (A). Avoid border effects by sampling away from edges of plot. In most cases, determinations of dry mass are made on representative sub-samples to reduce oven space requirement, take additional measurements (e.g., fertile culm count) etc. Several protocols available (Bell and Fischer, 1994, Reynolds et al., 2001, Pask et al., 2012), decide which method suit better for your objectives. ISBM Measurement method_of entity variable_of acronym scale_of