The conventional system of weeding avoiding herbicides facilitates the manufacture of two models of ecological machines. The TRB-SFN-Mulching hammer drill and the DDHR-350 knife brushcutter Storm with double side disc that allows to clear and to throw the grass to the trunk of the tree. Standard: -Chassis made of anti-wear material. -Transmission by “C” type pulleys and belts. -Rotor shaft mounted with steel stamping hammers. -Spray-suppression front plates. -Height-adjustable roller. -Rear rubber dust cover. -High-flow hydraulic motor. -Right-hand side launcher. -Maintenance tailgate, with manual opening. The TRB-SFN mulching system has an auger that moves the cut grass towards the tree trunk and covers it, thus preventing the remaining grass from producing photosynthesis by the effect of the sun and drying under the grass cover thrown by the machine. The working niches of the model TRB-SFN-Mulching are from 1,80 to 2,2o mts. of work and tractor powers from 60cv to 100 cv.