Grape cultivation method

Abstract

To provide a grape cultivation method with improved workability.SOLUTION: A post 10 is provided in a standing manner with respect to the ground G. Then, a plurality of wires 11 are attached at predetermined intervals in a direction orthogonal to the post 10. As a result, a trellis 1 is constructed. In attaching a young grapevine 3 to the trellis 1, first, a trunk 30 of the young grapevine 3 is bent at a predetermined angle θ in advance. Then, a primary scaffold branch 31 of the young grapevine 3 is attached to a first line 11a among the plurality of wires 11 so that the predetermined angle θ becomes a training angle.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a grape cultivation method.

Background Art

[0002] As a grape cultivation method, a method of making a hedge is known (see, for example, Non-Patent Document 1). This hedge construction will be described in detail with reference to FIG. 8. First, a hedge 1 shown in FIG. 8 is constructed. As shown in FIG. 8, this hedge 1 has a plurality of columns 10 (two in the drawing) provided upright at a certain interval with respect to the ground G. Then, as shown in FIG. 8, a plurality of wires 11 (three in the drawing) are attached at a predetermined interval in a direction orthogonal to the columns 10 so as to span between the columns 10.

[0003] Thus, the hedge 1 is constructed in this way. In the present embodiment, among the plurality of wires 11 shown in FIG. 8, the wire 11 closest to the ground G is referred to as the first line 11a, then the wire 11 closer to the ground G is referred to as the second line 11b, and then the wire 11 closer to the ground G is referred to as the third line 11c.

[0004] By the way, when grape saplings 2 shown in FIG. 8 are attached to the hedge 1 constructed in this way, the hedge construction is performed. As shown in FIG. 8, this sapling 2 is composed of a trunk 20 and main branches 21. The trunk 20 is planted upright on the ground G, and the main branches 21 are attracted so as to form a T shape and are attached to the first line 11a.

[0005] Thus, a T-shaped hedge construction is performed in this way.

Prior Art Documents

Non-Patent Documents

[0006]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, the T-shaped trellis construction as described above has a problem that it is too obsessed with the T shape and it is very difficult to harvest grapes. Furthermore, due to being too obsessed with the shape, the main branch 21 is forcibly bent, damaging the main branch 21, which may lead to the problem of having to redo the work.

[0008] And furthermore, without any work, due to the apical dominance and basal dominance of the young tree 2, as shown in Fig. 9, lateral branches 22 with grapes growing at the tip and base will emerge, and only thin lateral branches 23 without grapes growing will emerge in the middle part as shown by the arrow A. Note that this thin lateral branch 23 is still this thin even after 1 - 2 years have passed since the trunk 20 was planted in the ground G and the grape harvest period has already passed.

[0009] However, if this middle part lateral branch 23 is made into a firm branch like the lateral branch 22 shown in Fig. 9 (however, a branch with a thickness of about 10 mm in diameter is preferred because if it is too thick, no good grapes will grow), it is known that good grapes are likely to grow. Therefore, in order to make such a branch, operations such as bud injury or spraying a chemical agent CX - 10 to promote bud germination must be carried out. If this operation is neglected, there is a problem that no grapes will grow, or even if grapes grow, no good grapes can be produced.

[0010] From the above, the T-shaped trellis construction as described above generally has a problem of poor workability.

[0011] Therefore, in view of the above problems, an object of the present invention is to provide a grape cultivation method capable of improving workability.

Means for Solving the Problems

[0012] The object of the present invention is achieved by the following means. The numbers in parentheses are the reference numerals of the embodiments described later, but the present invention is not limited thereto.

[0013] According to the grape cultivation method according to the invention of claim 1, in a direction orthogonal to a support column (10) provided upright with respect to the ground (G), a plurality of wires (wire 11) are attached to the support column (10) at predetermined intervals. When attaching a young tree (3) to the fence (1), first, the trunk (30) of the young tree (3) is bent in advance at a predetermined angle (θ), and the main branch (31) of the young tree (3) is arranged among the plurality of wires (11) so that the predetermined angle (θ) becomes the attracting angle. It is characterized in that it is attached to the wire (first wire 11a) closest to the ground (G).

[0014] According to the invention of claim 2, in the grape cultivation method according to claim 1 above, the predetermined angle (θ) is 40° to 50°.

Effect of the Invention

[0015] Next, the effects of the present invention will be described with reference numerals in the drawings. The numbers in parentheses are the reference numerals of the embodiments described later, but the present invention is not limited thereto.

[0016] According to the invention according to claim 1, since it is only necessary to bend the trunk (30) of the young tree (3) in advance at a predetermined angle (θ), unlike the conventional method, there is no need to be particular about the shape and forcefully bend the main branch (31), which may damage the main branch (31). Furthermore, there is no need to perform an operation such as bud damage or an operation of spraying a chemical agent such as CX-10 to promote germination as in the prior art.

[0017] Therefore, according to the present invention, workability can be improved.

[0018] According to the invention of claim 2, since the side branches (32) will emerge almost evenly, good grapes are likely to grow.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0020] Hereinafter, an embodiment of the grape cultivation method according to the present invention will be specifically described with reference to the drawings. In the following description, when indicating the up, down, left, and right directions, it refers to the up, down, left, and right as viewed from the front of the drawing.

[0021] The grape cultivation method according to this embodiment can improve workability. Specifically, a young grapevine 3 composed of a trunk 30 and a main branch 31 as shown in Fig. 1(a) is prepared, and the trunk 30 is bent at a predetermined angle θ (0 < θ < 90°) with respect to the vertical direction in advance.

[0022] Then, the young grapevine 3 bent at the predetermined angle θ in advance is attached to the hedge 1 shown in Fig. 1(b). Specifically, as shown in Fig. 1(b), the trunk 30 is planted on the ground G, and the main branch 31 is attached to the first wire 11a by a band 4 such as a string so that the predetermined angle θ becomes the attracting angle with respect to the support 10.

[0023] In this way, without performing operations such as bud wounding or spraying a chemical agent CX-10 to promote germination, the secondary branches come out almost evenly without being biased towards the tip and base of the young grapevine 3. This is presumably because the balance of apical dominance, terminal bud dominance, and basal dominance in the physiology of the young grapevine 3 is well balanced, and thus the secondary branches come out evenly.

[0024] Therefore, if the grape cultivation method described above is performed, it is only necessary to bend the trunk 30 at a predetermined angle θ (0 < θ < 90°) with respect to the vertical direction in advance. Thus, unlike the conventional method, there is no need to be particular about the shape and forcibly bend the main branch 31 to damage the main branch 31. Furthermore, there is no need to perform operations such as bud wounding or spraying a chemical agent CX-10 to promote germination as in the conventional method. Also, if the secondary branches come out almost evenly, there will be no uneven distribution of nutrients, and thus good grapes are likely to grow.

[0025] Therefore, according to this embodiment, workability can be improved. In this embodiment, an example is shown in which the trunk 30 is bent at a predetermined angle θ with respect to the vertical direction and to the right direction in the drawing. Of course, it may be bent to the left direction in the drawing.

[0026] Here, in order to confirm the above content, the present inventor conducted the following experiment.

[0027] The present inventor started the experiment in April 2023 using the grape cultivation method described above in the test field in Shiojiri City, Nagano Prefecture. As a result, on May 31, 2023, the results shown in FIGS. 2 to 7 were obtained. FIG. 2 shows the one bent at 20° as the predetermined angle, FIG. 3 shows the one bent at 30° as the predetermined angle, FIG. 4 shows the one bent at 40° as the predetermined angle, FIG. 5 shows the one bent at 45° as the predetermined angle, FIG. 6 shows the one bent at 50° as the predetermined angle, and FIG. 7 shows the one bent at 60° as the predetermined angle.

[0028] Looking at FIGS. 2 to 7, although it is only about 1 to 2 months after the trunk 30 is planted on the ground G, it can be seen that the thicker secondary branch 32 appears not only at the tip and base but also in the middle part, rather than the secondary branch 23 shown in FIG. 9. Therefore, it was found that the thicker secondary branch 32 appears without performing the operation of bud wounding or spraying the chemical agent CX-10 that promotes germination as in the prior art.

[0029] Therefore, according to this embodiment, it is not necessary to perform the operation of bud wounding or spraying the chemical agent CX-10 that promotes germination as in the prior art, so it was found that the workability is improved.

[0030] From the perspective of equality, it can be seen that the secondary branches 32 shown in FIGS. 4 to 6 emerge almost evenly. The secondary branches 32 shown in FIGS. 2 and 3 have a faster growth rate at the tip part (the right side in the figure), and it can also be seen that the secondary branches 32 shown in FIG. 7 have a faster growth rate at the tip part (the left side in the figure). Therefore, from the perspective of equality, it can be understood that the secondary branches 32 shown in FIGS. 4 to 6 emerge almost evenly.

[0031] Therefore, it can be understood that since the secondary branches 32 shown in FIGS. 4 to 6 emerge almost evenly, good grapes are likely to grow.

[0032] Therefore, from the above experimental results, it was found that the predetermined angle is preferably set to 40° to 50°.

[0033] In this embodiment, when constructing the fence 1, the wire 11 is exemplified. However, as long as a line can be formed, any material can be used instead of the wire.

Explanation of Reference Numerals

[0034] 1 Fence 3 Young tree 30 Trunk 31 Main branch 32 Secondary branch 10 Support 11 Wire (line) 11a First line (the line closest to the ground) θ Predetermined angle G Ground

Claims

1. When attaching young grapevines to a fence in which a plurality of wires are attached to a support standing upright with respect to the ground at a predetermined interval in a direction orthogonal to the support, first, the trunk of the young grapevine is bent in advance at a predetermined angle, and the main branch of the young grapevine is attached to the wire closest to the ground among the plurality of wires so that the predetermined angle becomes the attracting angle. A grape cultivation method thus constituted.

2. The grape cultivation method according to Claim 1, wherein the predetermined angle is 40° to 50°.

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