SK1382015U1 - Source of biogenic elements - Google Patents

Abstract

The solution relates to organo-mineral sources of biogenic leachable plant nutrient elements obtained by leaching compost from biodegradable waste reprocessed through earthworm digestive tract. vermin. The formulations comprise ammonium sulphate and / or potassium sulphate, and / or boron ethanolamine complex, and / or formate, and / or acetate, and / or magnesium and / or calcium nitrate, and / or one of potassium and / or zinc citrates, and or manganese, and / or copper, and / or iron, and / or molybdenum. The described sources of biogenic elements are among the products suitable for organic farming systems.

Description

Source of biogenic elements

Technical field

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 in that they comprise ammonium silate and / or potassium sulphate and / or ethanolamine complex of boron and / or formate and / or magnesium and / or calcium nitrate and / or calcium and / or one of the potassium citrates 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 foliar application, but it is also advisable to use them also for soil fertilization, for the composting of biodegradable waste, or for growing plants in nutrient solutions.

BACKGROUND OF THE INVENTION

It is known that plants for their full development 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 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, it appears to be particularly advantageous to apply trace elements and certain secondary plant nutrients in the form of aqueous solutions of their chelates or various organic complexes. 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), hydroxyethylethylenediothylenethylenethylenethylenethylenethylenethylenethylenethylenethylenethylenediethylethylenediothiethylethylene 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 DTPA 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 i

They are usually a source of considerable amounts of sodium, since they are largely 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 most of the 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. Prepared from organic wastes (households, gardens, orchards and grassland, etc.), it is an important contribution to maintaining healthy soil and plant nutrition. Composting is one of the most effective methods of biological treatment of solid organic residues, a waste-free, environmentally friendly technology.

In order to increase the content of biologically active substances in compost abroad and since the end of the seventies of the last century, the Czech Republic has started to use the process of subsequent biological processing of compost through digestive system of earthworms (Agricultural Cooperative - Jenisovice, Agrospol - Zelovce, VermiVital spol. ro Záhorce).

Of the nearly 2,000 species of low-frost curves known today, red californian earthworm (Eisenia foetida) is usually used for the biological processing of compost. Earthworms, in cooperation with microorganisms, have the ability to convert organic matter from compost in their digestive tract. useful in connection with the cultivation of plants. vermicompost. Vermicompost can be used directly to improve soil properties or can be further refined. In order to isolate biologically active substances, it is desirable to subject the vermicompost after complete maturation to prepare a leach 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 discussed.

The essence of the technical solution

It has now been found that when potassium ammonium thiosulphate and / or potassium thiosulphate and / or ethanolamine complex of boron and / or potassium and / or potassium and / or magnesium and / or calcium and / or calcium thiosulphate and / or acetate are used as the source of biogenic elements very effective sources of plant nutrients can be prepared from potassium citrate and / or zinc and / or manganese and / or copper and / or iron and / or molybdenum by mixing them with an aqueous extract of vermicompost.

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Thus, it is possible to obtain or a mixed 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 and 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.

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

It is also an advantage that the silane 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 trihydrogen and monoethanolamine has proved to be particularly suitable. The technology of production of boron concentrates of this type was studied at the end of the last century, while liquid boron concentrates based on monoethanolamine complexes were the subject of intellectual property protection (ÚV 2929). Of the ethanolamine complexes of this type, the most widespread 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 extracts of vermicompost have been shown to be calcium and / or magnesium formates, acetates and nitrates. The study of phase equilibria of these inorganic and organic salts and their use as effective sources of calcium and / or magnesium in relation to plant nutrition has been given considerable attention in the past period to chemical and technological and agronomic research (ÚV 4629, 7055).

Researchers of the former VÚAgT in Bratislava (Agrochemie 16, (12), 344-348, 1976) pointed out the practical use of the Mg (NO3) ₂ - water binary system in the 1970s, while the results of their research work are still in use (DUMAG, MgN- etc.). 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 seq.).

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

The organo-mineral formulations based on the mixed solutions thus prepared are preferably intended for extracorporeal-leaf application. To be used after dilution •

···· water, at least 1: 10-20, 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 mixed zinc source according to the solution, the procedure was carried out by placing 400 kg of a water vermicompost liquor in 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 mass. % Calcium content: less than 0.3 wt. % Ca, • magnesium content: less than 0.001 wt. % Mg; potassium content: 0.09 wt. % K2O.

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 masses. % of total nitrogen (as N). The chemical reaction of the undiluted concentrate was practically neutral (pH: 6.8 - 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 prepared organo-mineral source of zinc, 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.

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

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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 kmol of sulfate in 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 (mass%) 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 Prepared trace element liquid concentrates citrate type were stirred

with a water extract of vermicompost of a similar quality to that specified in Example 1.

Example 5

In order to prepare an organo-mineral source of boron intended for foliar fertilization of sugar beet according to a solution containing at least 2 masses. % 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 polyethanolamine according to UV 2929. A water extract of vermicompost of similar properties as described above was used. in Example 1. The boron concentrate used contained about 150 g of boron per liter.

Example 6

To the liquid organic-mineral concentrate plants containing assimilable sulfur it is followed by the same proportions made homogeneous in an aqueous extract of vermin and concentrated aqueous thiosulphate - ammonium thiosulphate, _(NH4) 2S2O3, which was characterized by the composition of 12-0-0 + The solution type NS-concentrate based on ammonium sulphate 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, after dilution with water at a ratio of 1: 300, was applied to the crops of oilseeds, in particular oilseed rape.

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 sulfosulphate, K 2 S 2 O 3.

Concentrated aqueous solutions of thiosulphates - satiates used were prepared according to AO ČSSR no. 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.

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Example 8

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

materials. % aqueous extract of vermicompost, mass. % urea adhered, mass. % of a concentrated aqueous solution of calcium formate, Ca (COOH) ₂ in accordance with GO 4629 and 20 wt. % 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 as a leaf application for preventive treatment of pome fruit (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:

materials. % aqueous extract of vermicompost, mass. % urea adhered, mass. % concentrated aqueous solution of magnesium nitrate, Mg (NO3) 2, which contained min. 9.5 masses. % nitrogen (as N) and min. 7.8 masses. % 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 mass. % 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, mass. % liquid-solution manganese citrate type concentrate 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, mass. % liquid-solution copper concentrate, 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, mass. % liquid-solution zinc concentrate of the 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, mass. % liquid-solution iron 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 masses were added with 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 was gradually homogenized with constant mixing:

materials. parts of water leachate in vermicompost, • mass. of concentrated aqueous sodium thiosulphate - 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 showed a weakly alkaline chemical reaction (pH about 7.5) and its specific gravity was close to 1400 kg / cm 3, mass. parts of a monoethanolamine-type liquid boron concentrate containing about 150 g total boron (as B) per liter (BOROVITAL) and 5 wt. parts of a mixed solution of iron, zinc, manganese, molybdenum and copper citrates containing an average of 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 solution was 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, in accordance with GO 6698, containing about 500 g of potassium (as K ₂ O) per liter and 5 parts by weight of a mixed solution of trace plant nutrient citrates similar to the previous example .

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 solution, 75 parts by weight of the aqueous extract of vermicompost were mixed with 25 parts by weight of an approximately 30% by weight aqueous calcium formate solution (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 source of calcium 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 an aqueous extract of vermicompost were mixed with 15 parts by weight of an approximately 50% aqueous calcium nitrate solution, Ca (NC> 3) ₂ . The obtained calcium-containing organo-mineral concentrate was used for preventive treatment of pellets.

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:

materials. % water extract of vermicompost, mass. % aqueous solution of potassium formate, KCOO, containing about 500 g K ₂ O per liter (ÚV 6698), 50% aqueous solution of calcium nitrate, Ca (NC > 3) 2 and 5 wt. % aqueous solution of magnesium nitrate, Mg (NO3) 2, which contained min. 9.5 masses. % nitrogen (as N) and min. 7.8 masses. % 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, 1000 kg of the present mixed concentrate was prepared by mixing in the other 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 borohydride 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 concentrated aqueous manganese citrate solution containing 5.4 wt% Mn and 6.4 wt%. % of total nitrogen (as N), kg of concentrated aqueous zinc citrate solution containing 6.4 wt% Zn, kg of concentrated aqueous iron citrate solution containing 5.2 wt% Fe,

0,5 kg of crystalline ammonium monohydrate, (ΝΗ4) βΜθ7θ24.4 H ₂ O and 5 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 1: 15 - 20.

This type of universal source of plant nutrients was also aqueous for soil application 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 added, kg of liquid phosphate-potassium concentrate type 0-18-21 based on aqueous solution of hydrogen and diphosphate potassium phosphate,

2.6 kg of a liquid boron concentrate prepared by reacting 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 monobdate, (NFU is MgSO4.4 H2O and 0.5 kg of 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.

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I ···

Example 17-25

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

Example number

18 19 20 21 22 23 24

Source of plant nutrient in terms of solution:

Quantity of plant component according to solution: (wt.%)

Water extract of vermicompost 38

Urea, prilled

Iron citrate concentrate (5 wt% Fe) 2

Zinc citrate concentrate (6.4 wt.% Zn) according to AO ČSSR no. 234968 and AO ČSSR no. 241558

Manganese citrate concentrate (5,4 wt% Mn)

Copper Citrate Concentrate (6.5 wt% Cu)

Molybdenum citrate concentrate (wt.% Mo) according to AO ČSSR no. 213006 Ammonium sulphate solution concentrate (type: 12-0-0 + 26S) Potassium sulphite solution concentrate (type:) 10

Dimethyl sulfoxide, (CH ₃ ) 2 SO approx. 98% (CH ₃ ) ₂ SO (DMSO)

Liquid boron concentrates prepared by reaction of boric acid with monoethanolamine (approx. 150 g B per liter)

Concentrated aqueous calcium nitrate solution (about 50 wt.% Ca (NO ₃ ) ₂ ) Concentrated aqueous magnesium nitrate solution, Mg (NO ₃ ) ₂ (9.5 wt% N, 7.8 wt% MgO) Concentrated aqueous solution potassium formate, KCOO (approx. 500 g K ₂ O) 50

Concentrated aqueous solution of magnesium acetate, Mg (CH ₃ COO) ₂ (approx. 45 wt.% Mg (CH ₃ COO) ₂ ) Concentrated aqueous solution of calcium formate, Ca (COO) ₂ (approx. 30 wt.% Ca (COO) ₂ )

45 26 57 27 44 73.2 29

19-12 10 - 2.5 - 5 - 12

- 15 - 10

- 8 - 0.5 - 0.4

45

28

3 8 5

5.5

1.3

0,8 0,2

- 12 13 - - - 8 - 20 - - - 22

10 ..... 8. 14 - 9

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Liquid aqueous solution of potassium citrate, (CUKROVITAL K 400)

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 concerns biogenic elements - plant nutrients based on leachate obtained by leaching compost from biodegradable waste processed through digestive system of earthworms, so called. vermin. The compositions according to the invention are characterized in that they contain ammonium silate and / or potassium sulphate and / or ethanolamine complex of boron and / or formate and / or magnesium and / or calcium nitrate and / or some potassium 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)

PROTECTION REQUIREMENTS 1. A source of biogenic elements based on a vermicompost leach, 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 and / or calcium and / or magnesium nitrate and / or calcium and / or one of the citrates of potassium and / or zinc and / or manganese and / or copper and / or iron and / or molybdenum. 2. A vermicompost leachate biogenic element source according to claim 1, wherein the molar ratio of citric acid to cation in citrate is equimolar. Use of a source of biogenic elements based on the vermicompost leachate 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 a vermicompost leachate according to claim 1 as an additive in the 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.