In this article we will discuss how to recognize and choose the best Tree Spades on the Market.
The introduction of tree spade and tree planters machine for uproot plants has been determining to reduce the operators from one of most heavy tasks that are carried out in nurseries, that is: to extirpate plants (also of considerable dimensions) grown in the soil.
The long Italian nursery tradition has stimulated, in the passed years, some constructors of agricultural machines to translate equipment dedicated to generic cultivation operations (for example lifters, trucks transporter and tree movers), adapting and perfecting them for nursery work.
Some firms have been progressively specialized in this direction, arriving today to plan and to produce exclusive tree spade for nursery with a considerable level of technical innovation, until to become leader of the Italian market, with a contextual significant presence on foreign markets.
Italian specialized best tree spades for producers are three: two of them, Holmac of Padua and Pazzaglia of Pistoia, produce models similar between them as constructive typology and work execution; the third, Mac-Bert of Ferrara, utilizes a completely different system, useful to solve specific problems relative to the root system.
Holmac and Pazzaglia build models self-propelled rather complex, that uproot plants from the soil by the action of a vibrating blade in shape of half moon, of special steel in high resistance: penetrating quickly in the soil, the blade cuts a clod of variables dimensions: one tree spade, one clod.
Mac-Bert, instead, has developed a series of tree spade to couple on tractor, excavator, skid steer loader or back hoe loaders (it has been, besides, experimented a couple with a Pazzaglia) that work hydraulically, without vibrtions, with two complementary systems: the vertical spades and the lateral lances which, describing an arch, willcut below the plant.
They are some of the best tree spades on the Market. In this case they are tree spade constructively enough simple: they use three spades who flew in sequence one after other, from high to low, pushed by cylinders supplied by hydraulic installation of tractor.
At the end of operation one or two lances, it depend by the model, cut tap-root obtaining a clod in shape of truncated-cone, against of half moon of machines showed before.
Every model can work with different set of spades to obtain different measure of clod; the depth is changeable on every plant of some centimeters.
On request of nursery-men, it has been introduced a kit that allow to modify the diameter of each clod of 5/7 cm without changing the spade’s set. For model B250, B350, B700 this allows “on the row” to calibrate the clod in accordance with dimension of every plant.
The clod obtained with those tree spade are in shape of truncated-cone and so perfectly adaptable to the shape of pot assuring more stability of plants in case of wind, movement decided.
You have to remember that tree spades that work without vibrations of working parts don’t have any mechanical problem due by loosening of screws and nuts.