SK7433Y1 - Source of biogenic elements - Google Patents

Abstract

The invention relates to organo-mineral resources of biogenic elements - plant nutrients based on the extract obtained by digestion with composting of biodegradable waste processing through the digestive tract of earthworms, called vermi compost. The compositions comprise hyposulphite ammonium and/or hyposulphite potassium and/or ethanolamine complex of boron and/or formate and/or acetate and/or magnesium nitrate and/or phosphate and/or one of citrates of potassium and/or zinc and/or manganese and/or copper and/or iron and/or molybdenum. Described sources of biogenic elements are among the products suitable for systems of ecological cultivation.

Description

The solution concerns organo-mineral sources of biogenic elements - plant nutrients based on leachate obtained by leaching of compost from biodegradable waste processed through digestive system of earthworms. vermin. The compositions according to the invention are characterized by containing ammonium sulphate and / or potassium sulphate, and / or ethanolamine complex of boron, and / or formate, and / or acetate, and / or magnesium nitrate, and / or calcium, and / or some from potassium citrate and / or zinc, and / or manganese, and / or copper, and / or iron, and / or molybdenum. The products in the sense of the solution are especially suitable for extracorporeal so-called. foliar application, but it is advisable to use them also for soil fertilization, for composting of biodegradable waste or for growing plants in nutrient solutions.

BACKGROUND OF THE INVENTION

It is known that for their full development plants need in addition to the basic nutrients (N, P, K) and secondary nutrients (Ca, Mg, S, Fe) and micronutrients - trace elements (Zn, Mn, Cu, B, Mo, Co and also some others). Compounds containing these biogenic elements are used to prevent and / or curatively eliminate the symptoms present in plants as a result of their deficiency. The basic task of these plant nutrients is to activate the activity of various enzymes, which mostly catalytically influence several biochemical processes occurring in plant organisms.

In order to prevent negative phenomena related to the deficiency of secondary and trace elements in plant nutrition, it is necessary to maintain their level at the necessary level. For this purpose, both in terms of prevention and the possibility of curative intervention, these are applied in various forms, such as inorganic salts, oxides, frits, organo-complex compounds, chelates, as well as certain industrial wastes (mainly from chemical, mining and metallurgical industry).

Inorganic salts of trace and secondary nutrients are usually used in the form of their aqueous solutions or suspensions. Due to their highly ionic character, they can only be applied in the form of low-concentration solutions, and their effectiveness is usually only very low.

For foliar application, the application of trace elements and some secondary plant nutrients in the form of aqueous solutions of their chelates or various organic complexes appears to be particularly advantageous. In particular, derivatives of aliphatic amines and diamines are used as complexing agents for the preparation of compounds of this type.

Today, agricultural elements use trace elements and secondary nutrient elements in the form of chelates of ethylenediaminotetraacetic acid (EDTA), nitriloacetic acid (NTTA), diethylenetriaminopentaacetic acid (DTPA), 1,3-propylenediaminotetraacetic acid (PDTA), hydroxyethylethylenediethylenediethylethylenediethylethylenediethylethylenediethylethylenediethylethylenedi acids (DAEDDA) and some others.

Probably the most widespread is the use of trace elements and secondary plant nutrient elements in the form of chelates of the EDTA and DTP A type, which is related to their relatively good efficiency and relative availability. Although good results are achieved with the use of these chelates, in particular with rapid curative intervention, their wider application in agricultural practice is mainly hampered by the relatively high cost of the starting chelating agents, their limited availability, demanding production technology, and environmental reasons, related to their slow biodegradability and unambiguously synthetic character. A disadvantage of chelating agents of this type is also the fact that they are usually a source of considerable amounts of sodium, since they are predominantly available exclusively in the form of various sodium salts.

In addition to the chelates based on amino derivatives of various carboxylic acids, various complex compounds of inorganic and organic nature are also used as effective sources of trace elements. Inorganic compounds include, for example, cyanocoplexes (AO CSR 162140).

Even in the past period, the research also focused on the use of other complexing agents (AO ČSSR No. 216448).

In practice, mainly complexes of secondary and trace biogenic elements of natural character were used, characterized by their very good biodegradability, good plant acceptability, raw material availability and economic advantage.

Various derivatives of lignin have also been shown to be very promising complexing agents which meet very well the majority of requirements for carriers of secondary and trace plant nutrients (AO ČSSR No. 210823, 211287, PUV 0119).

Compost is the oldest and most natural means of soil improvement that humanity knows. It is prepared from organic wastes (from households, gardens, orchards and grassland, etc.) and is an important contribution to maintaining healthy soil and plant nutrition. Composting is one of the most efficient methods of biologically reprocessing solid organic residues, a waste-free and environmentally friendly technology. In order to increase the content of biologically active substances in the compost is abroad

SK 7433 Υ1 and from the end of the seventies of the last century began to use the process of subsequent biological processing of compost through digestive system of earthworms (Agricultural cooperative - Jenisovice, Agrospol - Zelovce, VermiVital spol. S ro Záhorce).

Of the nearly 2,000 species of low-frost bead known today, red californian earthworm (genus Eisenia foetida) is usually used for biological processing of compost. Earthworms, in collaboration with microorganisms, have the ability to convert organic matter from their compost in their digestive tract, eliminating a complex of biologically highly active substances usable in the context of plant cultivation and thus forming so-called. vermicompost. Vermicompost can be used directly to improve soil properties or can be further refined. In order to isolate biologically active substances, it is advisable to subject the vermicompost after complete maturation and to prepare the extract containing physiologically active substances (amino acids, humic acids, phytohormones, carboxylic acids, enzymes, etc.). The leach thus prepared can be used for fertilization after dilution with water, preferably by foliar application.

It has also proved to be advantageous to use this leachate after addition of other fertilizers and biologically active substances for the preparation of special organo-mineral fertilizers.

Enrichment of the extract with trace and secondary plant nutrients seems to be particularly suitable. The enrichment of the extract by said biogenic elements in the form of the usual salts of inorganic acids is possible only to a limited extent, due to their sludge-forming reactions and also because of the low efficiency of the plant nutrients thus supplied.

The solution is to use genuine chemical chelates, but this is partly limited by the disadvantages of synthetic chelates. The disadvantages of synthetic chelates have already been reported.

The essence of the technical solution

It has now been found that when ammonium thiosulfate and / or potassium thiosulfate and / or ethanolamine complex of boron, and / or formate, and / or potassium and / or magnesium acetate and / or calcium are used as the source of biogenic elements , and / or one of the citrates of potassium and / or zinc, and / or manganese, and / or copper, and / or iron, and / or molybdenum, can be prepared by mixing them with an aqueous extract of vermicompost to provide very efficient sources of plant nutrients.

Thus, it is possible to obtain or a mixture preparation enriched with only one biogenic element, suitable for example for the curative elimination of undesirable symptoms of the plant nutrient deficit, or by homogenization with several sources of biogenic elements in this solution to prepare the desired type of universal or special compound fertilizer usable for preventive or curative fertilization of crops.

The advantage of using plant nutrients in the form of thiosulphates - sulphites, ethanolamine complex of boron, formates, acetates, nitrates and citrates of potassium and / or trace elements is that they allow the preparation of clear or colloidal mixed solutions with aqueous leaching in vermicompost.

As a particularly suitable source of ammonium thiosulfate, (NH ₄ ) ₂ S ₂ O ₃ , one of its concentrated aqueous solutions, which may contain 45 to 60 wt. The technology of solution liquid fertilizer of this type has been the subject of extensive research in the early 1980s, and this research resulted in a practically used method of production, which was subject to intellectual property protection (AO ČSSR No. 227137). Similarly, the potassium modification of potassium thiosulphate, K2S2O3, is characterized by good water solubility, with the aqueous solutions prepared having high phase stability even at temperatures close to the freezing point. This makes it possible to prepare potassium-sulfur concentrates of the solution type, which can be used as sources of potassium in its chloride-free form and with plants which are well tolerated by sulfur. Liquid fertilizers containing sulfur in thiosulphate - sulphate form are also subject to protection (ÚV 4140).

It is also an advantage that the sulphite anion forms complex compounds with multiple metal cations.

If it is desired to enrich the aqueous extract of the vermicompost with a well-acceptable boron, one of the liquid boron complexes prepared on the basis of boric trihydrogenic acid and monoethanolamine has proven particularly suitable. The technology of production of boron concentrates of this type was studied at the end of the last century, and liquid boron concentrates based on monoethanolamine complexes were the subject of intellectual property protection (ÚV 2929). Among the ethanolamine complexes of this type, the most widespread use has been the use of a concentrate containing approximately 150 g of boron per liter (BORASOL, BOROVITAL, B-150, BORSEDOS 150 and the like).

Useful sources of magnesium and calcium in the preparation of organo-mineral mixed solutions based on aqueous extract of vermicompost have been shown to be calcium and / or magnesium formates, acetates and nitrates. Study of phase equilibria of said inorganic and organic salts and their use as effective sources3

In recent years, considerable attention has been paid to both chemical and agronomic research (OJ 4629, 7055) in relation to plant nutrition in relation to plant nutrition.

Researchers of the former VÚAgT in Bratislava (Agrochemie 16, (12), 344 - 348, 1976) pointed out the practical use of the Mg (NO ₃ ) ₂ - water binary system in the 1970s, while the results of their research work are still in use (DUMAG, MgN). -vit and so on). Similarly, the study of calcium and magnesium salts of selected carboxylic acids is currently being used (WO 4629, 7055). Said types of magnesium and calcium salts allow the preparation of mixed sources of plant nutrients according to the solution in the form of true or colloidal solutions, which is one of the basic prerequisites for their use in the form of foliar plant nutrition.

Citrate complexes of zinc, manganese, copper, iron and molybdenum have been shown to be suitable sources of micronutrients in the preparation of mixed organo-mineral sources of plant nutrients (UV 3841 et al.).

It has proven particularly advantageous if the molar ratio of citric acid to metal cation in the citrate is close to equimolar, i. j. if the metal cation atom contains approximately one mole of citrate, respectively. citric acid.

The organo-mineral preparations based on the mixed solutions thus prepared are preferably intended for extracorporeal-leaf application. They are used after previous dilution with water, at least in a ratio of 1: 10-20, with the concentration of biogenic elements in the application solution being decisive for the dilution level.

The organo-mineral sources of the biogenic elements according to the invention are also suitable for increasing the nutritional value of the soil and can also be advantageously used in connection with the composting of biodegradable waste. Their use in connection with composting significantly improves the quality of prepared compost and also reduces the time required for microbiological decomposition of waste.

The biologically active substances contained in the sources of biogenic elements in the sense of the solution are also suitable to be used in connection with the soilless (hydroponic and aeroponic) cultivation of plants. They can be added to nutrient solutions and also applied by spraying cultivated plants.

EXAMPLES

The examples below illustrate, illustrate and supplement the solution, but in no way limit the claims for protection.

Example 1

In order to prepare an organo-mineral zinc blended source according to the solution, it was proceeded that 400 kg of a water vermicompost liquor was introduced into a vessel equipped with a stirrer, characterized as follows:

• Appearance: light brown, practically clear, practically odorless solution. • Virtually neutral chemical reaction, pH: 7.38 / 21.8 ° C. • Evaporator-dry matter content (105 ° C): 0.42 wt. Calcium content: less than 0.3 wt. % Ca; magnesium content: less than 0.001 wt. % Mg; potassium content: 0.09 wt. % K ₂ O.

Then, 100 kg of an aqueous solution of zinc citrate complex prepared from zinc oxide, sulfuric acid, water, citric acid monohydrate and ammonia water was added gradually and with stirring to the aqueous extract of the vermicompost. The molar ratio of zinc to citric acid was practically equal - equimolar.

The liquid type zinc concentrate thus prepared contained 6.4 wt. % Zn, 5.3 wt. % of total nitrogen (as N). The chemical reaction of the undiluted concentrate was practically neutral (pH: 6.8 to 7.5) and its specific gravity was d = 1350 kg / m 3. The prepared citrate type zinc concentrate was phase stable up to -5 ° C.

Homogenization of the mixture yielded 500 kg of a light brown solution. The organo-mineral source thus prepared, which was well usable by plants, contained approximately 1.3 wt. % zinc (as Zn) and was used for foliar fertilization of the maize crop.

Example 2-4

In order to prepare organo-mineral mixed concentrates enriched with one of each trace element (manganese, copper and iron), an aqueous solution of vermicompost was homogenized with aqueous solutions of manganese, copper and zinc citrates.

All citrate solutions were prepared by reacting the appropriate sulfate with citric acid and ammonia in an aqueous medium.

SK 7433 Υ1

The prepared liquid citrate trace elements of the solution type were characterized as follows:

Example number: 2 3 4 Type of citrate concentrate: manganese copper irons The sulphate used in the preparation MnSO ₄ .5H ₂ O CuSO ₄ .5H ₂ O FeSO ₄ .7H ₂ O Number of sulphates of citrate 7.84 10.21 9.28 Number of citric acid in citrate 7.74 10.12 10.00 Content of biogenic element in citrate (% by weight) 5.4 6.5 5.18 pH of undiluted liquid concentrate 6.5-7.5 6.5 - 7.5 8.86 Specific weight - density (kg / m3) 1300 1300 1,283th

The prepared liquid concentrates of trace elements of the citrate type were mixed with an aqueous extract of a vermicompost of similar quality as specified in Example 1.

Example 5

In order to prepare an organo-mineral source of boron intended for foliar fertilization of sugar beet stand according to a solution comprising at least 2 wt. % of boron (as B) was prepared by homogenizing an aqueous extract of vermicompost (78%) with a liquid boron concentrate (22%), prepared from trihydrogenboronic acid and monoethanolamine according to the procedure of UV 2929. The preparation used an aqueous extract of vermicompost of similar properties as The boron concentrate used contained approximately 150 g of boron per liter.

Example 6

In order to obtain a liquid organo-mineral concentrate containing assimilable sulfur plants, an aqueous solution of vermicompost and a concentrated aqueous solution of ammonium thiosulphate, (NH ₄ ) ₂ S ₂ O ₃ , characterized by the composition 12-0, were homogenized in equal proportions. The solution type NS-concentrate based on sulphate-ammonium thiosulphate was prepared according to the procedure of AO ČSSR no. 227137. Prepared mixed organo-mineral source of sulfur and nitrogen, containing 6 wt. % N and 13 wt. % S was applied to oilseed stands, in particular oilseed rape, after dilution with water in a volume ratio of 1: 300.

Example 7

The preparation of an organo-mineral source of well-acceptable sulfur and potassium plants, according to the solution, proceeded by adding to the mixing tank successively and with stirring:

200 kg water vermicompost extract

200 kg of a concentrated aqueous solution of ammonium thiosulfate, (NH ₄ ) ₂ S ₂ O ₃ containing 12% ammonia nitrogen and 26 wt. % of total sulfur, and 100 kg of a concentrated aqueous solution of potassium thiosulphate, K ₂ S ₂ O ₃ .

The concentrated aqueous thiosulphate-sulphite solutions used were prepared according to the AO procedure

ČSSR č. 227,137th

The mixed organo-mineral solution obtained by homogenization of the raw material components was used as a source of plant-acceptable sulfur in connection with the foliar fertilization of oilseeds and cereals.

Example 8

In order to prepare an organo-mineral nutritional additive containing amide nitrogen, calcium and magnesium, the solution was as follows:

weight. % aqueous extract of vermicompost, wt. % of urea adhered, wt. % of a concentrated aqueous solution of calcium formate, Ca (COOH) ₂ , in the sense of UV 4629; % of a concentrated aqueous solution of magnesium acetate, Mg (CH ₃ COO) ₂ , according to the solution protected by UV 7055.

The prepared mixed solution - an effective source of calcium, magnesium, carbon and amidic nitrogen, was used in the form of foliar application for preventive treatment of pome fruits (apples and pears) and fruit vegetables, especially tomatoes.

Example 9

Organo-mineral liquid fertilizer designed primarily for preventive, foliar fertilization of cereals, according to the solution was prepared according to the following recipe:

weight. % aqueous extract of vermicompost, wt. % of urea added,

SK 7433 Υ1 wt. % concentrated aqueous solution of magnesium nitrate, Mg (NO ₃ ) ₂ , which contained min.

9.5 wt. % nitrogen (as N) and min. 7.8 wt. % MgO, wt. % of a liquid boron concentrate based on ethanolamine boron concentrate, prepared in accordance with GO 2929, containing approximately 150 g of boron (as B),

0.2 wt. % of molybdenum citrate complex (within the meaning of UV 3841),

0.02 wt. % crystalline selenium acid, H ₂ SeO ₃ , containing 58.2 wt. % Se, 10 wt. % liquid solution concentrate of manganese, citrate type, containing 5.4 wt. % Mn, 6.4 wt. % N, whose pH was 7.4 and the specific gravity was close to 1300 kg / m 3; % liquid solution concentrate of copper, citrate type, containing 6.5 wt. % Cu, 9.9 wt. % N, whose pH was 7.2 and the specific gravity was close to 1300 kg / m 3; % liquid solution concentrate of zinc, citrate type, containing 6.4 wt. % Zn, 5.3 wt. % N, whose pH was 7.4 and the specific gravity was close to 1350 kg / m 3; % liquid solution concentrate of the citrate type, prepared according to WO 4689, containing 5.18 wt. % Fe whose pH was 8.0 and the specific gravity was close to 1283 kg / m 3.

Finally, 0.78 wt.% Was added under vigorous stirring to adjust the theological properties and stabilize the mixed solution. % xanthan gum powder.

Example 10

In order to prepare an organo-mineral liquid fertilizer, in the sense of the solution, intended primarily for qualitative fertilization of oilseeds in the form of extra-root - foliar - application, gradually mixing gradually homogenized:

weight. parts by weight of aqueous extract of vermicompost, wt. parts of a concentrated aqueous solution of ammonium thiosulphate, (NH ₄ ) ₂ S ₂ O ₃ containing about 12 wt. % ammonia nitrogen (as N), about 26 wt. % of total sulfur (as S), which exhibited a weakly alkaline chemical reaction (pH ca. 7.5) and its specific gravity was close to 1400 kg / cm 3; parts by weight of a monoethanolamine-type liquid boron concentrate containing about 150 g total boron (as B) per liter (BOROVITAL); parts of a mixed solution of iron, zinc, manganese, molybdenum and copper citrates, containing on average 1.2 wt. % manganese, zinc and copper, about 2 wt. % iron and 0.2 wt. % molybdenum, the molar ratio of metal cations to citrate anion being almost equimolar.

Example 11

In order to prepare an organo-mineral liquid fertilizer containing potassium bound in organic form according to the solution, the following steps were gradually homogenized with stirring:

parts by weight of an aqueous solution of vermicompost, parts by weight of a concentrated aqueous solution of potassium formate, KCOOH, within the meaning of GO 6698, containing about 500 g of potassium (as K ₂ O) per liter, and parts by weight of a mixed solution of trace plant nutrient citrates .

The plant nutrient source thus prepared, after dilution with water, was used approximately 4 weeks before harvesting to increase the sugar content of the sugar beet stand.

Example 12

In order to prepare a calcium organo-mineral liquid fertilizer according to the invention, 75 parts by weight of an aqueous extract of vermicompost were mixed with 25 parts by weight of an approximately 30% aqueous solution of calcium formate, Ca (COO) ₂ . An aqueous solution of calcium formate was prepared by the process and exhibited properties in accordance with UV 7055.

The obtained mixed organo-mineral calcium source was used in the form of extracorporeal application for preventive treatment of tomato growth.

Example 13

In order to prepare a calcium organo-mineral liquid fertilizer according to the solution, it was proceeded that 85 parts by weight of the aqueous extract of vermicompost were mixed with 15 parts by weight of about 50% aqueous calcium nitrate solution, Ca (NO ₃ ) ₂ . The obtained calcium-containing organo-mineral concentrate was used for preventive treatment of the wine core.

Example 14

For the purpose of autumn fertilization of forest tree seedlings, a source of plant nutrients was prepared in terms of the solution. The following amounts of ingredients were mixed:

weight. % water extract of vermicompost,

SK 7433 Υ1 wt. % aqueous solution of potassium formate, KCOO, containing about 500 g K ₂ O per liter (UV 6698), wt. about 50% aqueous calcium nitrate solution, Ca (NO ₃ ) ₂ , and wt. % aqueous magnesium nitrate solution, Mg (NO ₃ ) ₂ , which contained min. 9.5 wt. % nitrogen (as N) and min. 7.8 wt. % MgO.

Fertilization by the given organo-mineral source of potassium, calcium and magnesium resulted in better maturation of wood mass and better wintering of seedlings.

Example 15

In order to prepare a universal source of plant nutrients of the organo-mineral type according to the solution, 1000 kg of the present mixed concentrate were prepared by mixing in further specified ingredients. Stirring was gradually added with stirring:

682.5 kg of aqueous vermicompost liquor, kg of urea fed, kg of liquid boron concentrate prepared by reacting trihydrogen boronic acid with monoethanolamine containing about 150 g of boron (as B) per liter, kg of concentrated aqueous copper citrate solution containing 6.5 wt. % Cu, kg of a concentrated aqueous solution of manganese citrate containing 5.4 wt. % Mn and 6.4 wt. % of total nitrogen (as N), kg of a concentrated aqueous solution of zinc citrate containing 6.4 wt. % Zn, kg of concentrated aqueous iron citrate solution containing 5.2 wt% Fe,

0.5 kg of crystalline ammonium molybdate, (ΝΗΝΗ ΜογΟΟ. 4 H ₂ O and kg of xanthan gum).

The universal type of liquid fertilizer prepared by mixing was applied in the form of foliar application after dilution with water in the volume ratio of 1: 15-20.

This type of universal plant nutrient source was also suitable for application to soil and also for the treatment of composted bio-waste.

Example 16

In order to prepare 100 kg of an organo-mineral source of essential plant nutrients, sulfur and microelements bound in the form of citrates, they were gradually mixed:

10.4 kg water vermicompost extract,

21.6 kg of urea to be added, kg of liquid phosphate-potassium concentrate type 0-18-21 based on an aqueous solution of hydrogen and potassium phosphate dihydrogen,

2.6 kg of liquid boron concentrate prepared by the reaction of trihydrogen boronic acid with monoethanolamine, in accordance with GO 2929, containing approximately 150 g of boron (as B) per liter,

1.2 kg of a concentrated aqueous solution of copper citrate containing 6.5 wt. % Cu, kg of a concentrated aqueous solution of manganese citrate containing 5.4 wt. % Mn and 6.4 wt. % of total nitrogen (as N),

3.5 kg of a concentrated aqueous solution of zinc citrate containing 6.4 wt. % Zn, kg of a concentrated aqueous solution of iron citrate containing 5.2 wt. % Fe,

0.2 kg of crystalline ammonium molybdate, (ΝΗ ^ ΜογΟ ^. 4 H ₂ O and

0.5 kg xanthan gum.

The prepared organo-mineral fertilizer was applied mainly by spraying the above-ground part of the plants after dilution with water in a ratio of 2-3 ml of concentrate per liter of application solution.

Example 17-25

In order to prepare and different sources of plant nutrients according to the solution, the ingredients according to the following table were mixed in the individual examples:

Example number 17 18 19 20 21 22 23 24 25 Source of plant nutrient in terms of solution: Quantity of plant component according to solution: (wt%) Water extract of vermicompost 38 74 45 26 57 27 44 73.2 29 Urea, prilled Iron citrate concentrate - - - 19 - 12 10 - - (5 wt% Fe) Zinc citrate concentrate (6.4 wt% Zn) according to AO ČSSR no. 234968 2 5 - 8 - - - - 10

SK 7433 Υ1

Example number 17 18 19 20 21 22 23 24 25 Source of plant nutrient in terms of solution: Quantity of plant component according to solution: (wt%) aAO ČSSR no. 241558 Manganese citrate concentrate - 2.5 - 5 - 12 - - 8 (5.4 wt% Mn) Copper citrate concentrate - 2 - 15 - 10 - - 5.5 (6.5 wt% Cu) Molybdenum citrate concentrate (% Mo) - 1 - 8 - - - - 1.3 according to AO ČSSR no. 213006 Sulfate solution concentrate - 0.5 - 0.4 - - - 0.8 0.2 ammonium (type: 12-0-0 + 26S) Sulfate solution concentrate - 12 45 - - 26 28 - - Potassium (type: 0-0-25 + 17S) Dimethylsulfoxide, (CH ₃ ) ₂ SO 10 - - - - - 10 - - approx. 98% (CH ₃ ) ₂ SO (DMSO) Liquid boron concentrate prepared by reaction of boric acid with monoethanolamine - - - 5 3 8 5 - - (approx. 150 g B per liter) Concentrated aqueous calcium nitrate solution - 3 - 0.6 1 5 3 6 4 (approx. 50 wt% Ca (NO ₃ ) ₂ ) Concentrated aqueous magnesium nitrate solution, Mg (NO ₃ ) ₂ - - - - 5 - - 12 - (9.5 wt% N, 7.8 wt% MgO) Concentrated aqueous potassium formate solution, KCOO - - - 13 - - - 8 - (approx. 500 g K ₂ O) Concentrated aqueous magnesium acetate solution, Mg (CH ₃ COO) ₂ 50 - - - 20 - - - 22 (approx. 45 wt% Mg (CH ₃ COO) ₂ ) Concentrated aqueous calcium formate solution, Ca (COO) ₂ - - 10 - - - - - 8 (about 30 wt% Ca (COO) ₂ ) - - - - 14 - - - - Liquid aqueous solution of potassium citrate, (SUGAR K 400) - - - - - - - - 12

The molar ratio of citric acid to cation bound in the citrate concentrates of trace plant nutrients used in the series of experiments was practically equimolar.

Industrial usability

The solution relates to biogenic elements - plant nutrients - based on the extract obtained by leaching compost from biodegradable waste processed through digestive system of earthworms, so-called. vermi10 compost. The compositions according to the invention are characterized in that they comprise ammonium sulphate and / or potassium sulphate, and / or the ethanolamine complex of boron, and / or formate, and / or acetate, and / or magnesium and / or calcium nitrate, and / or any of potassium citrate and / or zinc citrate and / or manganese, and / or copper, and / or iron, and / or molybdenum. The organo-mineral natural form of plant nutrient sources according to the solution is very well usable by plants.

By their nature, organo-mineral preparations are among the products usable in organic farming systems.

Claims (6)

A source of biogenic elements based on a vermicompost leachate, characterized in that it contains ammonium sulphate and / or potassium sulphate, and / or ethanolamine complex of boron, and / or formate, And / or potassium and / or magnesium acetate and / or calcium, and / or magnesium and / or calcium nitrate, and / or any of the potassium and / or zinc citrates and / or manganese, and / or copper, and / or or iron, and / or molybdenum. A source of biogenic elements based on the vermicompost leachate according to claim 1, characterized in that the molar ratio of citric acid to cation in citrate is equimolar. 10 Use of a source of vermicompost leach-based biogenic elements according to claim 1 for extracorporeal-leaf nutrition of plants. Use of a source of biogenic elements based on the vermicompost extract according to claim 1 as an additive to the soil. Use of a source of biogenic elements based on the vermicompost extract according to claim 1 as an additive in 15 composting of biodegradable waste. Use of a source of biogenic elements based on the vermicompost extract according to claim 1 in the cultivation of plants in nutrient solutions.