JPH068244B2 - Grape foliar spray - Google Patents

Description

TECHNICAL FIELD The present invention relates to a foliar spray agent for grapes, and more specifically, by spraying the foliar surface during the cultivation of grapes,
The present invention relates to a foliar spray for grapes, which can enhance pollination ability, prevent flower sieving and parthenocarpy, and as a result can increase the grain size of grapes.

[Prior art and its problems] In many cases, even if a flower blooms, it does not bear fruit if the chisso is too effective or the tree is strongly pruned due to strong pruning. This is called flower sway or flower flow, which is a concern for fruit tree growers. On the other hand, efforts are being made to prevent flower sway by fertilizing methods and pruning, but farmers are still worried because it depends on the weather. Recently, in the case of grapes, there are cases in which chemical physiology is used to regulate plant physiology,
Naturally, flower sway should be prevented in the natural state.

Conventionally, boron is an essential element, flower bud differentiation, pollen generation,
It is known that even pollination is affected, and it is applied as fertilizer and supplied not only from the soil but also from the leaf surface. When applied from the leaf surface, quick lime is added to prevent phytotoxicity, but it is difficult to determine the proper amount of boron, and this is often regarded as dangerous because of phytotoxicity. In addition, quicklime is not soluble in water, so no nutritional value is expected.

Therefore, various fertilizing components or plant growing agents have been proposed and put to practical use in order to improve this drawback, but none have been found to be sufficiently satisfactory.

Further, due to calcium deficiency, for example, fruit cracking and shrinkage due to water metabolism deficiency, physiological disorders such as poor metabolism due to lack of balance between magnesium, potassium and calcium, and due to boron deficiency, for example, chlorosis,
There has been a demand for fertilizers and the like that are effective in preventing physiological disorders such as water metabolism failure.

[Problems and Solutions of the Invention] In view of the above-mentioned circumstances, the present inventor has a method of preventing flower behavior and parthenocarpic results from the nutritional aspect during cultivation of grapes, and prevents physiological disorders caused by calcium deficiency or boron deficiency. As a result of diligent examination of the method, a specific organic acid calcium has an effect of suppressing shoot elongation,
It was found that the boron compound has a function of assisting differentiation of flower buds, generation of pollen tubes and pollinating action, can prevent flower sway and parthenocarpy, and can prevent physiological disorders caused by calcium deficiency or boron deficiency. It was found that when both components were sprayed on the leaves together, the absorption efficiency of both components was good, and the present invention was completed.

That is, the gist of the present invention resides in a foliar spray agent for grapes, which contains calcium formate and a boron compound as active ingredients.

Hereinafter, the configuration of the present invention will be described in detail.

Examples of the target boron compound in the foliar spray for grapes of the present invention include water-soluble boron compounds such as boric acid and borax. On the other hand, the solubility of calcium formate used in combination with this (100 g water at 20 ° C) is 16.
Since it is 6 g, it is used as an aqueous solution in which both components are uniformly dissolved in the present invention.

Usually calcium formate is 100 times (1% concentration) to 1000
It is used after diluting twice (0.1% concentration), preferably 3
It is diluted to 100 times to 500 times. The boron compound is 5
It is used by diluting it with 00 times (0.2% concentration) to 5000 times (0.02% concentration), preferably from 2000 times to 40 times.
It is diluted to 00 times. The both are appropriately mixed to obtain the spray agent of the present invention. The mixing ratio of both is appropriately 8: 1 to 8: 3 in terms of the weight of calcium formate and boron compound before dilution.

It is usually preferable to apply the foliar spray to grapes intermittently according to the growth stage, but it is particularly necessary to spray the foliar spray at the flowering stage when cell division is active or the early fruiting stage.
The spraying method can be carried out according to a conventional method, for example, by using a sprayer or a sprinkler.

The type of grape targeted by the present invention is not particularly limited, and representative examples thereof include Kyoho and Delaware.

[Action] Boron has a great relation to the pollinating action of pollen. Boron is presumed to be involved in the action of cell membranes (in this case, the walls of pollen tubes) to make pectin.
The outermost wall of the cell is the middle lobe, which is the first part of the cell membrane and is considered to be a conjugate that connects cells.
Made of almost pure pectin. Calcium is incorporated into this and acts as calcium pectate to join cells to each other. Boron is required to make pectin, and it is said that calcium is incorporated into pectin to form calcium pectate, which strengthens cell-to-cell binding. In this way, there is an unthinkable relationship between boron and calcium, and when calcium is deficient, the formation of the middle lobe is inhibited and new tissue cannot be formed.

Moreover, calcium is said to be deeply involved in metabolism and water metabolism in the plant body, and when calcium is deficient, physiological disorders due to this are likely to occur.

Various metabolisms are carried out in plants, including grapes, and various organic acids are produced at that time. Some of these inhibit the normal physiological actions of plants when they are present in excess, and calcium is believed to play a role in neutralizing them. In particular, it is believed that this action is strongly performed at the roots and tips of new shoots, which are new tissues. However, since calcium has a property of being difficult to migrate in the plant body, when water metabolism is inactive, it is accumulated in the lower part of the plant body (a part near the root),
In some cases, it may not reach the upper part (the tip of the trunk or branch).

On the other hand, boron is said to be deeply involved in carbohydrate and protein synthesis and water metabolism in plants. It is also involved in calcium metabolism as described above.
Therefore, when boron is supplied together with calcium, calcium is efficiently absorbed and transferred.

Therefore, by supplying boron and calcium simultaneously from the leaf surface, synergistic effects are useful for preventing flower sway and parthenocarpy, and for preventing physiological disorders due to calcium or boron deficiency.

EXAMPLES Next, the present invention will be described more specifically with reference to Examples.
The present invention is not limited to the description of the following examples unless it exceeds the gist.

Example 1 825 g of calcium formate and 175 g of boric acid were weighed and mixed to obtain a spray agent of the present invention. This is dissolved and diluted with water to 350 times, and Kyoho is cultivated for 15 days every 7 days from flowering every 2 days using a sprinkler to evenly disperse the leaves.
When the average number of seed-bearing fruits was obtained, the result was a bunch of the photograph in FIG.
The number of control groups was 21 and the effect of this example was clearly shown. The results of analyzing the contents of calcium and boron in the fruit at this time are shown in Tables 1 and 2, respectively.

[Effects of the Invention] According to the foliar spray for grapes of the present invention, the combined use of a specific calcium and boron compound enhances the absorption efficiency of both of them into the plant and suppresses shoot elongation. Not only that, flower formation and pollen generation are flourishing,
Since the fruit setting is good, flower sieving and parthenocarpy can be prevented, and the grain size of grapes can be increased. Further, in view of the action of calcium and boron, both are in a irreversible relationship, and plant physiology will not be normally performed even if either is missing, according to the foliar spray for grapes of the present invention, calcium and Since boron is efficiently absorbed by the plant body, it is possible to prevent physiological disorders in grapes caused by these deficiencies.

[Brief description of drawings]

FIG. 1 is a photograph showing the morphology of grapes showing the effect of applying the spraying agent in the examples.

Claims (1)

[Claims] 1. A foliar spray for grapes, which comprises calcium formate and a boron compound as active ingredients.