US-12616104-B2 - Grape cultivation method

Abstract

In a grape cultivation method providing improving workability, posts are provided in a standing manner in the ground. Then, a plurality of wires are attached at predetermined intervals in a direction orthogonal to the posts. As a result, a trellis is constructed. In attaching a young grapevine to the trellis, first, a trunk of the young grapevine is bent at a predetermined angle θ in advance. Then, a primary scaffold branch of the young grapevine is attached to a first line among the plurality of wires so that the predetermined angle θ becomes a training angle.

Inventors

• Hironobu Sato

Assignees

• Greenstyle Co., Ltd.

Dates

Publication Date

20260505

Application Date

20241104

Priority Date

20231115

Claims (2)

1. 1 . A grape cultivation method, comprising: attaching a young grapevine to a trellis in which a plurality of lines are attached to posts provided in a standing manner in a ground, with the lines being at predetermined intervals in a direction orthogonal to the posts; prior to the attaching step, first, bending a trunk of the young grapevine at a predetermined angle (θ) in advance, attaching a primary scaffold branch of the young grapevine to a line closest to the ground among the plurality of lines so that the predetermined angle (θ) becomes a training angle; attaching the primary scaffold branch so as to be aligned with the line closest to the ground; the predetermined angle (θ) being formed when the trunk of the young grapevine is bent with respect to a vertical direction from a predetermined point of the trunk of the young grapevine, and is formed between the vertical direction and a tangential direction of the trunk of the young grapevine; and a linear distance from the ground toward the line closest to the ground to the predetermined point on the trunk of the young grapevine being shorter than a linear distance from the line closest to the ground toward the ground to the predetermined point on the trunk of the young grapevine.
2. 2 . The grape cultivation method according to claim 1 , wherein the predetermined angle (θ) is 40° to 50°.

Description

FIELD OF THE INVENTION The present invention relates to grape cultivation. BACKGROUND OF THE INVENTION As a grape cultivation method, a method of performing a vertical shoot positioning (VSP) training system is known (see Non-Patent Document 1, for example). The VSP training system will be described in detail with reference to FIG. 10. First, a trellis 1 shown in FIG. 10 is constructed. As shown in FIG. 10, the trellis 1 is provided with a plurality of posts 10 (two in the figure) spaced at fixed intervals in a standing manner in the ground G. As shown in FIG. 10, a plurality of wires 11 (three in the figure) are attached at predetermined intervals in a direction orthogonal to the posts 10 so as to span the posts 10. Thus, the trellis 1 is constructed in this manner. In the present embodiment, among the plurality of wires 11 shown in FIG. 10, a wire 11 closest to the ground G is referred to as a first line 11a, a wire 11 next closest to the ground G is referred to as a second line 11b, and a wire 11 next closest to the ground G is referred to as a third line 11c. Incidentally, a young grapevine 2 shown in FIG. 10 is attached to the trellis 1 thus constructed, whereby the VSP training system is performed. As shown in FIG. 10, the young grapevine 2 is composed of a trunk 20 and primary scaffold branches 21, the trunk 20 is planted in the ground G in a standing manner, and the primary scaffold branches 21 are trained so as to form a T shape and are attached to the first line 11a. In this way, the T-shaped VSP training system is performed. The Non-Patent Document 1 cited herein refers to “6. Vertical Shoot Positioning Training System and Basics of Trellising”, [online], Vieille Vigne, [Searched on Nov. 13, 2023], Internet (https://vieillevigne.net/systeme-palissage/) SUMMARY OF THE INVENTION However, the T-shaped VSP training system as described above has a problem of being too particular about the T shape, making it difficult to harvest grapes. Furthermore, there is a problem that the primary scaffold branches 21 are forcibly bent due to being too particular about the shape, damaging the primary scaffold branches 21, which may cause redoing of the work. Furthermore, in the T-shaped VSP training system, if no work is done, as shown in FIG. 11, a secondary scaffold branch 22 in which grapes will grow will come out at the tip and the base, and as for a secondary scaffold branch in the intermediate portion, only a thin secondary scaffold branch 23 in which no grapes will grow will come out as shown in a portion of the arrow A due to the basal dominance and the apical bud dominance of the young grapevine 2. Note that the thin secondary scaffold branch 23 remains this thin even though one to two years have passed since the trunk 20 was planted in the ground G and the harvesting time of grapes has already passed. However, it is known that good grapes are more likely to grow when the secondary scaffold branch 23 in the intermediate portion is grown to be a solid branch like the secondary scaffold branch 22 as shown in FIG. 11 (a branch with a diameter of about 10 mm is preferable because good grapes will not grow if the branch is too thick). Therefore, in order to make such a branch, it is necessary to carry out work called bud notching and work such as spraying a chemical called CX-10 that promotes forced germination. If this work is neglected, there is a problem that grapes will not grow, or even if they do, they will not be of good quality. From the above, the T-shaped VSP training system as described above has the problem of poor workability in general. Accordingly, in view of the foregoing problems, an object of the present invention is to provide a grape cultivation method capable of improving workability. The foregoing object of the present invention is achieved by the following means. Note that reference signs in the embodiment to be described later are added in parentheses, but the present invention is not limited thereto. According to a grape cultivation method according to the invention of claim 1, in attaching a young grapevine (3) to a trellis (1) in which a plurality of lines (wires 11) are attached to posts (10) provided in a standing manner in a ground (G), at predetermined intervals in a direction orthogonal to the posts (10), first, a trunk (30) of the young grapevine (3) is bent at a predetermined angle (θ) in advance, and a primary scaffold branch (31) of the young grapevine (3) is attached to a line (a first line 11a) closest to the ground (G) among the plurality of lines (11) so that the predetermined angle (θ) becomes a training angle. According to the invention of claim 2, the predetermined angle (θ) is 40° to 50° in the grape cultivation method according to claim 1. Next, advantageous effects of the present invention will be described with reference signs of the drawings. Note that reference signs in the embodiment to be described later are added in parentheses, but the present invention is no