An array of foliage contacting rods having a certain stiffness and trunk contacting rods having a greater stiffness is assembled in combination for mounting on an oscillatory shaker head configured to be carried over row cultivated crops by a mobile harvester to effect crop harvesting by both foliage shaking and trunk shaking using a single shaker head. Moreover, the number of rods of each type may be varied to suit harvesting conditions while the oscillatory shaker head remains in place in the mobile harvester and the stiffness of each rod is adjustable within limits to further conform to harvesting conditions. The rod array in one embodiment provides simultaneous harvesting of multiple rows of a crop cultivated in parallel row configuration.