Learn how olive fruit retention force (FRF) and detachment index (DI) guide ripening, harvest timing, and mechanical efficiency while reducing fruit loss. Fruit retention (or detachment/removal) force is the tensile force needed to separate an olive from its pedicel at the abscission zone (AZ). It’s typically reported in newtons (N) or grams-force (gf) i.e. 1 N ≈ 102 gf. Most gauges measure a direct pull, but torsion and bending also matter in..