JP2000026182A - Lime material for initial manure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a calcium component in an agricultural lime material readily soluble in water in soil and to efficiently replenish the calcium component by blending the lime material with a solid edible org. acid such as citric acid, tartaric acid and malic acid. SOLUTION: A natural agricultural lime material or one of various agricultural, lime materials originating from the food and chemical industries and from slag, etc., is used as a base and blended with citric acid, tartaric acid, malic acid, fumaric acid, succinic acid, adipic acid, ascorbic acid or a mixture of these as a solid edible org. acid. Citric acid is inexpensive and easily available and easily leaches a larger amt. of a calcium component in the lime material into water in soil than the other org. acids. The proportion of the org. acid added is 0.1-100 wt.%. Since the leaching rate of the calcium component is increased in accordance with the increase of the proportion, the proportion and the amt. of the lime material used are appropriately determined in consideration of the kind of vegetable, the pH and calcium content of soil, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lime material for an original fertilizer, and more particularly to a lime material for an original fertilizer which can be easily dissolved in soil and can efficiently supply a calcium component.

[0002]

2. Description of the Related Art Agricultural lime materials made from waste of quicklime, slaked lime, calcium sulfate, calcium carbonate, shell material, lime hydrate, calcium oxide, lime compound and the like conventionally applied to soil are used in soil. It has been introduced mainly for pH correction. Since these agricultural lime materials have to be introduced in large amounts, about 200 to 300 kg per 10 ares, farmers are forced to work hard and the amount of calcium eluted in the soil despite the large amount applied. Due to the extremely small amount, calcium deficiency symptoms have occurred. Specifically, for example, calcium deficiency symptoms such as apple bitter pits in fruit trees, ass rot of tomatoes in vegetables, core rot of Chinese cabbage and cabbage, and paraffin leaves of cucumber occur frequently in vegetables.

[0003] On the other hand, in order to solve these calcium deficiency symptoms, it has been proposed to apply various calcium preparations to the foliage of plants (Japanese Patent Publication No. 7-77990,
JP-A-7-89781, JP-A-7-232982
JP, JP-A-8-295585, JP-A-9-2
No. 63377). However, no proposal has ever been made to apply agricultural lime materials to the soil with primary fertilizer to elute more calcium components.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to make it easy to dissolve a calcium component due to moisture in soil when a poorly soluble agricultural lime material is applied to soil. By facilitating the dissolution of the calcium component of the hard-to-dissolve agricultural lime material, it becomes possible to supplement the calcium component with a small amount of the agricultural lime material that has been applied in large quantities. It is extremely economical as well as economical. An object of the present invention is to provide a lime material for primary fertilizer that is easily soluble in water in soil and can efficiently replenish calcium components.

[0005]

Means for Solving the Problems The present inventor has conducted intensive studies to solve the above-mentioned problems. As a result, citric acid was added to agricultural lime materials such as calcium carbonate and calcium hydroxide which are conventionally eluted only in trace amounts in soil. It has been found that the addition of an edible organic acid such as this makes it possible to easily and more elute the calcium component into the moisture in the soil, and has accomplished the present invention.

That is, in order to solve the above-mentioned problems, the invention of claim 1 comprises at least one agricultural lime material selected from various agricultural lime materials as a main component, and further comprises citric acid, tartaric acid, malic acid and fumaric acid. Powdery or granular lime material for primary fertilizers, characterized by blending at least one solid edible organic acid selected from the group consisting of succinic acid, adipic acid, ascorbic acid and mixtures thereof.

[0007] The invention of claim 2 of the present invention is characterized in that, in the lime material for original fertilizer according to claim 1, the edible organic acid is citric acid.

According to a third aspect of the present invention, there is provided the lime material for primary fertilizer according to the first or second aspect, wherein the various lime materials for agriculture are natural, derived from shells, or derived from the food industry. Slag, slag such as blast furnace slag, etc.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, natural products,
At least one selected from a variety of inexpensive and readily available agricultural lime materials such as those derived from shells, those derived from the food industry, those derived from the chemical industry, and those derived from slag such as blast furnace slag. Agricultural lime is used as the main component. By adding an edible organic acid such as citric acid to the agricultural lime material, the calcium component is easily eluted into water in the soil.

The above solid edible organic acid used in the present invention is a safe edible acid recognized as a food additive,
Specifically, for example, citric acid, tartaric acid, malic acid, fumaric acid, succinic acid, adipic acid, ascorbic acid or a mixture thereof can be mentioned. Among them, citric acid is 300 to 350 yen / kg (98%). (Market price on June 9, 2006), and the production amount is stable at about 22,000 tons per year. Therefore, it is easy to obtain. As described later in Test Example 3, citric acid is higher than other organic acids. Also easily convert calcium components in agricultural lime materials to moisture in soil,
It is advantageous in that it elutes more.

The mixing ratio of the edible organic acid such as citric acid to the agricultural lime material is not particularly limited. Specific examples of the mixing ratio of the edible organic acid such as citric acid to the agricultural lime material include, for example, about 0.1% by weight to 100% by weight. Since the elution rate of the calcium component increases as the ratio of addition increases, it is preferable to determine the ratio appropriately in consideration of the type of plant, the state of soil pH, and the like.

[0012] The application rate of the lime material for primary fertilizer of the present invention to soil is not particularly limited, but it can be determined by conducting soil analysis and considering the calcium content in soil, pH state, plant type and the like.

[0013] The lime material for primary fertilizer of the present invention is not suitable for agriculture in terms of handleability, such as that powdery or granular materials can be directly sprayed and that they can be mixed and sprayed with other fertilizers as compared with liquid materials. Easy to use. There is no particular limitation on the method for forming the powdery or granular material, and a known method used in the art can be used. The size and shape of the powder and particles are not particularly limited, and the calcium component is easily eluted when the surface area is increased, such as by making it finer.
It becomes bulky and scatters, making it difficult to handle in production, storage, transportation, application, etc., and increases the cost, so consider the size and shape of the powder and particles considering the ease of dissolution of calcium components and handleability. It is preferable to decide.

[0014]

Next, the present invention will be described in detail with reference to examples, but the present invention is not limited to these examples unless departing from the gist of the present invention. [Test Example 1] Citric acid is 0% by weight, 0.1% by weight, 0.5% by weight, 2% by weight, 50% by weight, and 90% by weight with respect to 1 g of calcium carbonate (reagent). After mixing and mixing, add 100 ml of water and let stand for 4 hours.
After standing for a period of time, the mixture was filtered, and the calcium concentration of the filtrate was measured.
For calcium hydroxide (reagent), a test was performed in the same manner as in the case of calcium carbonate (reagent), and the calcium (CaO) concentration of the filtrate was measured. Table 1 shows the measurement results.

[0015]

[Table 1]

As shown in Table 1, citric acid was added up to 90% by weight in a compounding weight ratio, but calcium (CaO) elution increased as more citric acid was added than in the case where citric acid was not added. The rate was high, and the effect of the addition of citric acid was observed.

Test Example 2 Calcium carbonate used in Test Example 1 (0% by weight with citric acid added and 2% with citric acid added)
Weight% product) to 300 g of red clay in terms of calcium
Mix to 33.2 kg per are, add water to 70% of the maximum water capacity, let stand for 1 hour and 24 hours, take 100 ml each with a soil extractor, 8000 r
After centrifugation at pm for 1 hour, water in the soil was collected, and the calcium (CaO) content was measured. Table 2 shows the measurement results.

[0018]

[Table 2]

From Table 2, it can be seen that when citric acid is added, calcium (CaO) is higher than when no citric acid is added.
It can be seen that the elution rate of the compound increased, and the effect of the addition of citric acid was observed.

Test Example 3 In the same manner as in Test Example 1, 1 g of calcium carbonate (reagent) was added to citric acid, tartaric acid,
Malic acid, fumaric acid, succinic acid, adipic acid, and ascorbic acid were mixed and mixed at a weight ratio of 0.5%, and 100 ml of water was added. The mixture was allowed to stand for 4 hours, followed by filtration, and calcium (CaO) in the filtrate was added. The concentration was measured. Table 3 shows the measurement results.

[0021]

[Table 3]

From Table 3, it can be seen that when the edible organic acid was added, calcium (Ca) was higher than when no edible organic acid was added.
It was found that the dissolution rate of O) was high, and the effect was particularly high for citric acid.

[0023]

According to the present invention, it is possible to elute a large amount of calcium component in the water in the soil, and it is possible to reduce the amount of the lime material for the original fertilizer to be input, thereby saving the labor of the farmer. Will lead to If more calcium components are eluted in the water of the soil, the efficiency of calcium absorption is increased, and the occurrence of calcium deficiency is reduced. In addition, edible organic acids such as citric acid formulated here are safe compounds that are also used as food additives, and are decomposed into carbon dioxide and water in soil, so they are environmentally friendly. .

If the edible organic acid is citric acid, it is inexpensive, easily available and easy to handle, and has a high calcium (CaO) elution rate.

If the agricultural lime material is derived from natural materials, those derived from seashells, those derived from the food industry, those derived from the chemical industry, and those derived from slag such as blast furnace slag, it can be obtained at low cost. Easy.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) C05D 3:02 3:04)

Claims (3)

[Claims] Claims 1. An agricultural lime material selected from various agricultural lime materials as a main component, and citric acid, tartaric acid, malic acid, fumaric acid, succinic acid, adipic acid, ascorbic acid or a mixture thereof. A powdery or granular lime material for primary fertilizer, characterized by containing at least one solid edible organic acid selected from the group consisting of: 2. The lime material for primary fertilizer according to claim 1, wherein the edible organic acid is citric acid. 3. The lime material for agriculture according to claim 1, wherein the lime material is natural, derived from shells, derived from the food industry, derived from the chemical industry, or derived from slag such as blast furnace slag. 3. The lime material for primary fertilizer according to claim 1 or claim 2, wherein