Abstract: A continuously slowly moving machine automatically inserts rigid elongated members in the ground at regular intervals along the perimeter of a large field to facilitate anchoring a taut textile net placed over seedling grass. Several thousand of the members must be inserted around the perimeter of a typical turf-growing plot at a spacing of a few feet apart. Ground wheels of a moving frame generate movement of a carriage which travels horizontally on the moving frame rearwardly and forwardly. The carriage supports the inserting mechanism for the members which includes a single inserting upright cylinder and a connected coordinated delivery plunger for each member advancing each member to a ready vertical position beneath the rod of the cylinder. When the carriage is at the rear of its travel relative to the moving frame substantially at zero ground speed, a member is inserted in the soil by the rod of the cylinder accompanied by simultaneous retraction of the delivery plunger.