JPS63264403A - How to increase potato yield - Google Patents

Abstract

PURPOSE:To improve the efficiency of photosynthesis of vegetable and to increase the yield of potato, by treating potato with one or more choline salts such as choline phosphate and choline chloride. CONSTITUTION:The solar energy fixing function of green vegetable can be promoted and the yield of potato can be increased by applying 50-200g of one or more choline salts (e.g. choline bitartrate and dihydrogen choline citrate) to 10 are of a potato field. The choline salt is applied to the leaf and stalk of the potato in the form of aqueous solution having active component concentration of 100-20,000ppm, preferably 300-10,000ppm. The choline salt may be mixed with liquid fertilizer, insecticide, fungicide, foliar application agent, etc. The application stage of the choline salt is preferably between the flow bud appearing stage and 2 weeks before the yellowing stage.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for increasing potato yield using choline salt.

(Prior Art) It has been known that rooting can be promoted by immersing sweet potato seedlings in a choline solution.

However, there is no report that a yield-increasing effect has been found by treating potatoes with choline salts.

(Problem to be solved by the invention) When agricultural production is viewed from a biological perspective, its characteristics are that it is produced in a way that uses the photosynthetic ability of green plants to accumulate solar energy on the earth. It also supplies oxygen to the atmosphere. However, this is not necessarily the most efficient way to utilize solar energy. Looking at the world's food situation, it is predicted that by the end of this century the world's population will be almost double its current level, and it will be extremely difficult to secure enough food to cope with this population increase. ing.

Many research efforts have been made to cope with such population growth. However, most of the conventional development research that has been carried out to increase agricultural productivity has stopped at improving production technology, and has focused on specifically understanding the details of the inherent functions of plants and strengthening them. Little effort has been made in that direction. Plants generally use solar energy through photosynthesis to synthesize carbohydrates from water and carbon dioxide gas, supplying oxygen to the atmosphere.

As a result of research into the enhancement of the solar energy fixing function of green plants, the inventors discovered that by treating plants with choline salts, photosynthesis in plants could be carried out more efficiently.This led to the completion of the present invention. It's arrived.

(Means for Solving the Problems) In the present invention, examples of choline salts include inorganic salts such as hydrochloride, phosphate, boIJ, IJ phosphate, sulfate, nitrate, carbonate, and acetic acid and citrate. , lactate, L (
+) Indicates organic acid salts such as tartrates.

Next, a production example of the compound according to the present invention will be shown.

Production Example 1 Method for producing choline phosphate 208 g of 50χ choline (manufactured by Nippon Hydrazine) and 84 ml of pure water were cooled and stirred at below 5°C under a nitrogen atmosphere, and then 110 g of 89χ phosphoric acid was added dropwise.

As a result, 402 g of a 50x aqueous solution of choline phosphate was obtained. The pH of this product was 4.9. The 3 aqueous solution was concentrated to obtain a phosphate.

In a similar manner, aqueous solutions of various choline salts were prepared by changing the acid, and winter crystals were obtained by concentrating the solutions. In addition, salts for which it was difficult to obtain crystals were subjected to the test as an aqueous solution.

Table 1 shows the physical properties of an example of the compound.

Table 1 To prepare choline salts, e.g. powder, aqueous solution, emulsion,
It can be formulated into any conventional and known dosage forms such as aqueous or oily suspensions.

The amount of choline salt to be used depends on the growth stage of potatoes, usage method,
Although it varies depending on the time of use, etc., the amount of drug per area is usually 50 to 200 g per 10a. Choline salt is sprayed in an aqueous solution on the stems and leaves of potatoes. In this case, the active ingredient is 100 to 20,000 ppm, preferably 300 ppm.
Spray an aqueous solution with a concentration of ~10000 ppm.

Although choline salts are generally used in the form of an aqueous solution, they can also be mixed with liquid fertilizers, insecticides, fungicides, foliar sprays, and the like. Note that it is preferable to spray an aqueous solution containing a surfactant in order to make it easier for the drug to penetrate into the stems and leaves of potatoes. It is preferable to use the choline salt between the time of bud set and two weeks before yellowing of potatoes.

Next, the effects of the present invention will be explained using test examples.

(Example) Test Example 1 Potatoes at peak flowering stage, which had been grown for two months after planting in the field, were treated with 10 different concentrations of compounds in which a surfactant was added.
Sprayed at a rate of 100j2 per a.

One month after spraying, the potatoes were harvested and their weight was measured. Second
The test results are shown in the table.

Table 2

Claims (1)

[Claims] A method for increasing potato yield, which comprises applying 50 to 200 g of one or more choline salts per 10a to potatoes.