JPH0555477B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method for preventing two-layer separation of liquid fertilizers such as liquid fertilizers, paste fertilizers, and suspended fertilizers using organic fertilizer as a dispersoid and water as a dispersion medium.

[Conventional technology and its problems]

(Background) Today, liquid organic fertilizers are attracting attention in the agricultural world as safe fertilizers that do not cause chemical damage like inorganic fertilizers, reduce soil fertility due to continuous use, and cause pollution. (Problems with conventional technology) However, with existing liquid organic fertilizers containing yeast, blackstrap molasses, fishmeal, protein, amino acids, inorganic salts, etc., precipitation occurs over time due to differences in specific gravity, and finely ground water-soluble Two-phase separation is likely to occur due to the generation of precipitates over time due to crystal growth of inorganic salts, etc. Once the liquid fertilizer has separated into two phases, it cannot be returned to a uniform liquid fertilizer even if it is stirred before use, and as a result, it clogs fertilization pipes and the like, reducing its commercial value. Therefore, various proposals have already been made to prevent phase separation. For example, carboxymethyl cellulose, hydroxyethyl cellulose,
The combined use of colloidal substances such as methylcellulose, guar gum, chitansan gum, and polyvinyl alcohol has been considered, but large amounts must be used to prevent two-phase separation, which reduces fluidity and makes pipe transportation difficult. Become. On the other hand, chelating agents such as EDTA, citric acid, and polycarboxylic acids have been investigated to prevent precipitation over time due to crystal growth of finely ground inorganic salt particles, but sufficient effects have not been obtained.

[Purpose of the invention]

In view of the above circumstances, the present invention provides yeast, blackstrap molasses,
To provide an effective and inexpensive means for preventing precipitation or two-phase separation of a liquid organic fertilizer containing fishmeal, protein, amino acids, and inorganic salt sugar without increasing its viscosity.

[Means to achieve the purpose]

(Progress of Completion of the Invention) Therefore, as a result of various studies in order to solve the above-mentioned drawbacks in liquid and organic fertilizers, the present inventor found that oils and fats containing emulsifying surfactants (hereinafter also referred to as "emulsifying oils and fats") By adding to liquid organic fertilizer and stirring, it is surprisingly possible not only to prevent precipitation over time due to the difference in specific gravity and crystal growth of finely ground inorganic salts, but also to prevent the resulting modified liquid organic fertilizer from They found that it has excellent fluidity due to its low viscosity. (Summary) The present invention is based on the above findings, and its gist resides in a method for preventing separation of liquid organic fertilizer, which is characterized by causing oil and fat containing an emulsifying surfactant to be present in the liquid organic fertilizer. . (Oils and fats) The fats and oils used in the present invention are liquid fats and oils containing triglycerides as a main component, such as linseed oil, perilla oil, tung oil, sesame oil, rapeseed oil, cottonseed oil,
It means vegetable oils and fats such as soybean oil, castor oil, olive oil, and sunflower oil; vegetable oils and fats such as fish oil, beef oil, pork oil, and sheep oil; and microbial oils and fats derived from various oil-producing bacteria; however, these are, of course, limited to examples. isn't it. (Surfactant) Emulsifying surfactants used in the present invention include anionic surfactants, nonionic surfactants, regardless of whether they have ionizable properties or not, as long as they can substantially emulsify the fats and oils used in the present invention. Any active agent, cationic surfactant, or amphoteric surfactant can be used, but since the target of liquid fertilizer is agricultural crops, it is preferable to use one with low toxicity, the coexistence of inorganic salts as electrolytes, and various factors such as price. Considering the conditions, nonionic surfactants such as polyoxyethylene sorbitan ester, polyoxyethylene alkyl ether, and polyoxyethylene higher fatty acid ester are advantageous. (Additional amount of emulsifier-containing oil and fat) The amount of emulsifying oil and fat added to the liquid organic fertilizer in the method of the present invention depends on the type of liquid fertilizer, that is, whether the liquid organic fertilizer is a paste fertilizer or a suspension fertilizer; It is necessary to change according to conditions such as the type of organic raw material in the fertilizer and the type and ratio of inorganic raw materials added to the organic raw material, but in general
It is preferably in the range of 0.01 to 5%. Further, the ratio of emulsifier to oil and fat is preferably within the range of approximately 0.5 to 50%. (Fertilizer components) Examples of organic raw materials in the target fertilizer of the present invention include yeast, blackstrap molasses, fishmeal, alcoholic fermentation waste liquid, etc., and inorganic raw materials added to these include urea, ammonium sulfate, ammonium chloride, ammonium phosphorus, etc. , salting, sulfurization, etc. (Method of adding emulsifier-containing fats and oils) When carrying out the present invention, it is better to prepare a liquid organic fertilizer in advance and then add emulsifying fats and oils in order to maximize the effect of the addition or to add the oils and fats. This is preferable because it reduces the amount. When carrying out the present invention, conventionally known additives such as thickeners (carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, guar gum, xanthan gum, polyvinyl alcohol, etc.), inorganic salt crystal growth inhibitors (EDTA, citric acid, Polycarboxylic acids, etc.) may be added at will. In addition, if necessary, preservatives,
Flavoring agents, coloring agents, etc. can also be added.

[Effect]

In the present invention, the reason why emulsifying fats and oils are so effective in preventing two-phase separation of liquid organic fertilizers is not clear at present, but it is probably because the target substances are yeast, fish meal, etc. that produce sediment over time due to differences in specific gravity. In this case, the emulsified state of the oil and fat is destroyed during stirring, and the oil and fat particles adhere to the surface of yeast, fish meal, etc., and together with the fine air bubbles that are generated at the same time, the specific gravity of the entire dispersoid becomes the specific gravity of water. This is probably due to the close specific gravity. On the other hand, in the case of precipitates caused by crystal growth of finely ground inorganic salts over time, fats and oils coat the surface of the finely ground inorganic salts as described above, and have the effect of adjusting the specific gravity to be close to that of water. This is thought to be due to the fact that oil and fat adhering to the surface of the inorganic salt crystal prevent contact between crystal particles and the dispersion medium that dissolves some of the inorganic salt, inhibiting crystal growth.

【Example】

The embodiments and effects of the present invention will be described below with reference to Examples, but the examples are, of course, for illustrative purposes and are not intended to limit the idea of the invention. Example 1 (Liquid fertilizer) To 50 parts of water, add 15 parts of yeast powder and 25 parts of blackstrap molasses as organic raw materials, and 5 parts of urea, 2.5 parts of ammonium nitrate, and 2.5 parts of potassium chloride as inorganic raw materials, stir and mix to make a liquid. I got fertilizer. The following anti-separation agent (emulsifying fat) was added to the above mixture in the proportions shown in Table 1 below, and after mixing, 100 ml of each mixture was placed in a 100 ml graduated cylinder, and a stability test over time was conducted at 40°C. The results are shown in Table 2 below.

【table】

【table】

[Table] Example 2 (Paste fertilizer) Paste fertilizer will be explained. 19.8 parts of water, 10 parts of yeast powder as an organic raw material,
After adding 10 parts of urea, 5 parts of ammonium nitrate, and 2.5 parts of potassium chloride as inorganic raw materials to 10 parts of fishmeal and 40 parts of blackstrap molasses, 0.2 parts of xanthan gum as a thickener was added and mixed with stirring to obtain a paste fertilizer. Ta. to this,
The following anti-separation agent was added in the proportions shown in Table 3 below, and after mixing, 100 ml each was placed in a 100 ml graduated cylinder and a stability test over time was conducted at 40°C. The results are shown in Table 4 below.

[Table] 〓 Manufactured by applicant company: Polyoxyethylene Al
Kill ether product name
〓〓 Previous

【table】

【table】

【Effect of the invention】

As explained above, the present invention provides yeast, blackstrap molasses,
By providing an effective and inexpensive means to prevent precipitation or two-phase separation of liquid organic fertilizers containing fishmeal, proteins, amino acids, inorganic salts, etc. without increasing the results, the agricultural and horticultural industry will benefit. It provides great benefits.

Claims (1)

[Scope of Claims] 1. A method for preventing separation of a liquid organic fertilizer, which comprises causing oil and fat containing an emulsifying surfactant to be present in the liquid organic fertilizer. 2. The method for preventing separation of a liquid organic fertilizer according to claim 1, wherein the oil and fat containing an emulsifying surfactant is blended at a ratio of 0.01 to 5% with respect to the liquid organic fertilizer. 3. The method for preventing separation of liquid organic fertilizer according to claim 1 or 2, wherein the surfactant is blended at a ratio of 0.5 to 50% with respect to oil and fat.