FI97849C - tree Protection - Google Patents

Description

97849

The present invention relates to a wood cover comprising an elongate tube of transparent or translucent material, in a lower part of which the airborne part of a tree seedling can be placed, and towards the opposite end of which the airborne part of a tree seedling can grow inside the pipe.

10

Today, tree shelters are commonly used to protect tree seedlings from damage, e.g., from the wind or from being eaten or trampled by animals, and to create a microclimate that promotes tree growth.

15

Such wood coverings may be formed of an extruded synthetic plastic material, e.g. in the form of a double-walled extrusion.

20 Wood preservatives shall be such that the wood is able to open or disintegrate when it reaches the stage of growth at which the wood preservative is unnecessary and would unduly restrict growth. To this end, it has previously been proposed that v · molds made of synthetic plastic material be

• I

.2.5 wood shields with weakening cracks or lines to facilitate opening of the growing wood pipe.

• «• · · • · · •

However, arranging such weakening slits or lines has similar disadvantages. Thus, a synthetic. * 30 plastic tube fitted with a slot along its entire length • »· ... or a substantial length may not have sufficient • · · structural strength for the required purpose. It may ♦ crack too early when placed on the ground, so that it no longer: · obtains the full protection that a continuous unbreakable pipe would form. In addition, a pipe with weakening lines strong enough to maintain the integrity of the pipe during planting, but weak enough for 2 97849 wood to be able to break it at the right time, makes the extrusion pipe more complicated to manufacture and increases its cost, especially the preferred pipe. with 5 having a double-walled structure.

The object of the present invention is to overcome the above-mentioned drawbacks.

According to the invention, there is provided a wood cover according to the preamble of claim 1, characterized by the features set forth in the characterizing part of claim 1.

Thus, the tree cover according to the invention can be produced advantageously and with the structural stability initially required for planting, while the growing tree is able to open it at a suitable moment.

The end portion is preferably shaped with an end surface 20a inclined with respect to the axis of the tube so as to provide an open area delimiting both the end of the blunt chisel and the end surface at the end of the tube to allow subsequent roots to develop. The end surface of the other end of the tube is simply perpendicular to the axis of the tube • · ·. ••• .25.

• · • * «· · • · ·. In addition, the tube preferably comprises a tubular inner wall and a tubular outer wall connected to the inner wall by spacers keeping the walls apart. This. Thanks to 30, the pipe can be strong without excessive wall thickness, · it can be light, and it reduces the amount of material required.

For convenient storage and transport, the 97849 3 shields can be made in nested groups, with four being the optimum number group, which produces a good packing ratio and at the same time an acceptable small range of pipe diameters.

An example according to the invention will be described below with reference to the accompanying drawing, which shows a side view of a tree seedling planted in the ground, around and extending to the ground there is a tree shelter.

The drawing shows the bare root of a plantable trunk, namely a pine seedling 28 with a length of between 6-18 cm and a trunk 30, branches 32 and roots 34, some 15 of which are in the lower part 14 of the wood cover according to the embodiment, comprising an elongate tube 12, having a circular, square or rectangular cross - section.

It is possible to plant the tree seedling 28 in the ground 16 in the normal way 20, later placing the pipe 12 on it, and then pushing the part 14 into the ground, compacting the ground around the pipe. · _ If necessary. Alternatively, it is possible to first place the tree seedling 28 in the tube 12 with the roots in the end part 14, whereby a cylindrical pit is made in the ground 16 with a tool. 25 la, such as a planting stick; the tool is pulled out; and the seedling • · · * · · I * 28 and the tube end portion 14 are placed in the pit; and finally • · · ...

the ground around part 14 is compacted.

In both cases, the placement of the end portion 14 of the tube • • · ''·· "30 is facilitated by the design of the end portion 14, with the end portion extending on the right side to a lower level:: than on the left side so that the tube appears:: on the other side a somewhat sharp end 24, as shown in the drawing, In the case shown 35 4 97849 the lower end surface 22 of the pipe is in a plane inclined (not perpendicular like a normal wood cover) to the axis of the pipe, so that the lower part 14 is open on the left and below the roots of the tree would be able to develop.

The tubes 12 are transparent or translucent and are made by extruding a plastic material, e.g. polyethylene, polypropylene or polycarbonate, and a material which has been treated so that it can decompose due to ultraviolet radiation. The tubes comprise a tubular inner wall 20 and a tubular outer wall 18 connected to the inner wall by baffles (not shown) running parallel to the axis of the tube and keeping the walls apart.

15

The tree grows inside the tube 12 towards its upper end, where the surface 36 is perpendicular to the axis of the tube, and where the tube has an outwardly curved mouth 10 so that the edge does not damage the trout leaves or branches as the tree grows out of the mouth.

20

Arranged in the lower part of the pipe 12 are two radial lines 26 opposite to the diagonal to facilitate the opening or breaking of the pipe caused by the growth of wood. The gaps,::: which can be formed by cutting through the two walls 18 and 20,: 25 extend from the base of the tube 12 only as far as is necessary to reach the surface of the ground 16.

• · • · • · · • · *

In the shielded environment of the tube 12, the tree 28 grows faster than • · «outdoors, and when it grows too large relative to the shield 12, it. 30 forces the shield scattered, starting from the radial slits 26, so that • · · growth is not restricted. Once this growth stage has been reached, the strength of the part of the pipe • · · * 12 above the ground is::: impaired by ultraviolet light, and the wood will have no difficulty in opening and breaking the shield without the need for lines of weakness. Finally *; ultraviolet light provides complete disintegration of the shield 12 so that it does not contaminate the landscape.

5,97849

If the tree seedling is delivered in place in a soil or compost container, instead of bare roots, it can be placed in tube 12 so that the bottom of the container is flush or protrudes slightly over the tapered head 24 and the top of the container is in the same planting at or near the same planting. level than the surrounding land.

Tube 12 may have an inner dimension of 4.7 cm, and an outer dimension of 5.0. When dimensioned in this way, the pipe may be inside several of the wood guards shown in drawing 10 with different external dimensions, for example inside four wood guards which are nested in the assembly, in order to save space during storage and transport. The outer dimension of the outermost tube can be, for example, 7.1 cm, because only a very small clearance is required between the parts of the group.

The wood cover described above protects the wood from damage, e.g. from wind, or from being trampled or hit by animals such as rodents or other small mammals, or from being eaten on the ground.

The tree cover according to the invention also has the advantage of protecting it against tree species against the species Hylobius and Hylastes, which use seedlings of seedlings, especially in places where conifers have previously grown. Known methods of protection include: cotton mesh and "paper hat"; however, the wood cover according to the invention provides protection against these insects • ·. ·. * ·. against it, among other benefits listed earlier, including a beneficial microclimate.

Another advantage of the tree cover according to the present invention is that it can be used as a package for trout, when transported, for example from a nursery to a planting site.

35

Claims (6)

6 97849 A wood cover comprising an elongate tube 5 (12) of transparent or translucent synthetic plastic material, said tube (12) being provided with at least one radial slot or incision (26) extending through the wall or walls of the tube (12), wherein the wood the synthetic plastic material of the cover is such that it is attenuated by ultraviolet radiation, characterized in that said slit or slit (26) is arranged at the free end (14) of a tube (12) intended to be placed in the ground (16), said slit or slit (26) ) extends longitudinally from said free end (14) to a distance approximately equal to the intended planting depth of the wood cover, whereby when the wood cover in use begins to restrict the growth of the tree (28) implanted in the wood cover, the lower part of the cover may widen (incisions) (26), while the wood cover on the ground surface (16) The ultra-20 violet deterioration of the part (x) allows the part without the gap or incision to disintegrate. Wood cover according to Claim 1, characterized in that the end part (14) is formed by an end surface V · 25 (22) which is inclined with respect to the axis of the pipe (14), V 1 so as to provide both a blunt chisel end · · * ... · (24) that the open area delimited by the end face (22), which!, 1 ·· allows the subsequent development of the roots. • · • · · • · Wood cover according to Claim 1 or 2, characterized in that the pipe (12) has a tubular shape, a second inner wall (20) and a tubular outer wall (18) connected to the inner wall (20) by spacers '. walls (18, 20) separately. 35 »H r il 1 (1 l i> #i 97849 7 Wood cover according to one of the preceding claims, characterized in that the tube (12) has an outwardly curved or outwardly turned mouth (10). Wood cover according to one of the preceding claims, characterized in that it has a tree seedling inside. Wood cover 10 according to one of the preceding claims, characterized in that it is arranged inside a second wood cover with different external dimensions. • · · • · · · · · • • · • • • • 1 2 3 · · 2 2 · 8 3 8 97849 Patentkraven