Decree of the Ministry of Agriculture No. 475 / 2000 Coll.
Decree of the Ministry of Agriculture amending Decree of the Ministry of Agriculture No. 273 / 1998 Coll., on collection and chemical analysis of fertiliser samples
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29.12.2000
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475
DECLARATION
Ministry of Agriculture
of 13 December 2000
amending Decree No. 273 / 1998 of the Ministry of Agriculture Coll., on collection and chemical analysis of fertiliser samples
According to Section 16 (b) of Act No. 156 / 1998 Coll., on fertilizers, soil aids, auxiliary plant preparations and substrates and on agrochemical testing of agricultural soils (Fertilisers Act), as amended by Act No. 308 / 2000 Coll.:
Decree No 273 / 1998 Coll., on collection and chemical analysis of fertiliser samples, is amended as follows:
1. In Article 9 (3), the words "which are reproducible and have the highest possible detection of micro-organisms' are replaced by the words" listed in Annex 3 '.
2. Annex 2 shall read as follows:
"Annex No 2 to Decree No. 273 / 1998 Coll.
Chemical analysis procedures
1. Preparation of samples for analysis
The modification of the final sample delivered to the laboratory is a sequence of operations, most often sifting, diluting and homogenisation, which is carried out in such a way that:
(a) even the smallest of the samples envisaged by the analytical methods are representative of the final sample;
(b) during the treatment, the granularity of the fertiliser has not been changed enough to significantly affect solubility in various leaching agents
2. Nitrogen
2.1. Determination of ammonium nitrogen
2.1.1 Determination of ammonium nitrogen by distillation method
Ammonia is extracted with excess sodium hydroxide, distilled and bound in a known volume of a volumetric solution of sulphuric acid, the excess of which is determined by titration with a volumetric solution of sodium hydroxide.
2.1.2 Determination of ammonium nitrogen by formaldehyde method
Ammonium ions in an aqueous solution are converted to virtually neutral hexamethylenetetramine by reaction with formaldehyde, thereby releasing equivalent amounts of oxonium ions. These are determined directly by titration by a volumetric solution of sodium hydroxide to phenolphthalein.
2.2. Determination of ammonium and nitrate nitrogen according to Devard
Nitrates and possibly present nitrites in a highly alkaline environment are reduced by hydrogen in the state of birth, resulting in a reaction of Devard's sodium hydroxide alloy. The ammonia produced is distilled together with the initially present and bound in a known volume of a volumetric solution of sulphuric acid, the excess of which is determined by titration with a volumetric solution of sodium hydroxide.
2.3. Determination of total nitrogen (sum of inorganic and organically bound nitrogen)
2.3.1 Determination of total nitrogen in nitrate-free nitrogen lime
The sample shall be broken down by the Kjeldahl method by boiling with sulphuric acid in the presence of a copper catalyst. The resulting ammonium sulphate is extracted with sodium hydroxide and distilled into a known volume of a volumetric sulphuric acid solution, the excess of which is determined by titration with a volumetric sodium hydroxide solution.
2.3.2 Determination of total nitrogen in nitrogen lime with nitrate
First, metal iron (powder) and tin chloride are reduced to ammonia and the sample is further decomposed by Kjeldahl as in paragraph 2.3.1.
2.3.3 Determination of total nitrogen in urea
The urea nitrogen is converted by boiling the sample with sulphuric acid into ammonium, which is distilled from the alkaline environment into a known volume of the volumetric sulphuric acid solution and the excess is determined by titration with a volumetric solution of sodium hydroxide.
2.4. Determination of cyanide nitrogen
Cyanamide is precipitated from the solution as a silver salt which is decomposed by the Kjeldahl method and the nitrogen is determined as in paragraph 2.3.1.
2.5. Determination of biurete in urea
Biuret forms a blue-violet water-soluble complex in an alkaline environment in the presence of sodium potassium tartrate with bivalent copper, whose absorbance is measured at a wavelength of 546 nm.
2.6. Determination of different forms of nitrogen side by side
Determination of different forms of nitrogen side by side in fertilisers with ammonium, nitrate, urea and cyanamide nitrogen
2.6.1 Solvent and insoluble nitrogen (sum)
Determination shall be made only if cyanide is also present from the above forms of nitrogen.
2.6.1.1. In the absence of nitrates, the sample is directly mineralized by Kjeldahl decomposition.
2.6.1.2. In the presence of nitrates, the sample is mineralized by Kjeldahl's decomposition after reduction of powdered iron and tin chloride.
Note:
The fertiliser is separated by water at room temperature from ammonium, nitrate and urea nitrogen (including biureth), calcium cyanide is hydrolysed (Ca (HCN2) 2) and urea-aldehyde condensates remain undissolved. If the insoluble nitrogen content is found to be more than 0,5%, the presence of urea-aldehyde condensates or other forms of insoluble nitrogen may be considered. In this case, the analytical procedure described is inappropriate without modification.
2.6.2 Solvent forms of nitrogen
The different proportions of a single sample solution shall be determined by:
2.6.2.1 soluble total nitrogen
2.6.2.1.1. In the absence of nitrates by direct degradation according to Kjeldahl
2.6.2.1.2. In the presence of nitrates in the aliquot proportion of the solution previously reduced according to Ulsche (powder iron in acidic environment) by decomposition according to Kjeldahl. In both cases, the produced ammonia is determined by the distillation method 2.1.1.
2.6.2.2 the soluble total nitrogen without nitrate nitrogen Kjeldahl decomposition after removal of nitrate with iron sulphate in an acidic environment. The produced ammonia is determined by the distillation method 2.1.1.
2.6.2.3. Nitrate nitrogen from the difference:
2.6.2.3.1 in the absence of calcium cyanide, the difference between 2.6.2.1.2 and 2.6.2.2.2 or between 2.6.2.1.2 (soluble total nitrogen) and the sum of ammonium and urea nitrogen (2.6.2.4 + 2.6.2.5),
2.6.2.3.2 in the presence of calcium cyanide, the difference between 2.6.2.1.2 and 2.6.2.2 or between 2.6.2.1.2 and the sum (2.6.2.4 + 2.6.2.5 + 2.6.2.6).
2.6.2.4 Ammonium nitrogen
2.6.2.4.1 in the presence of ammonium or ammonium and nitrate nitrogen alone, using distillation method 2.1.1.
2.6.2.4.2 in the presence of urea or cyanamide nitrogen, by sealing ammonia in the cold from a weak alkaline environment through air. The ammonia is bound in a known volume of a volumetric solution of sulphuric acid and determined as in the distillation method 2.1.1.
2.6.2.5. Urea nitrogen
either
2.6.2.5.1 by converting urea by means of urease into ammonia, which is titrated with a graduated hydrochloric acid solution,
or
2.6.2.5.2 by weight xanthhydrol; the biuret is also precipitated, but can be identified with urea nitrogen without great error, since its absolute content in compound fertilisers is generally small,
or
2.6.2.5.3. calculation of differences according to the table:
| případ | N – O3- | N – NH4+ | N – CN22- | N – CO(NH2)2 |
|---|---|---|---|---|
| 1 | nepřítomen | přítomen | přítomen | (2.6.2.1.1) - (2.6.2.4.2 + 2.6.2.6) |
| 2 | přítomen | přítomen | přítomen | (2.6.2.2) - (2.6.2.4.2 + 2.6.2.6) |
| 3 | nepřítomen | přítomen | nepřítomen | (2.6.2.1.1) - (2.6.2.4.2) |
| 4 | přítomen | přítomen | nepřítomen | (2.6.2.2) - (2.6.2.4.2) |
2.6.2.6. Cyanamide nitrogen precipitated as silver salt and by determination of nitrogen in the precipitate according to Kjeldahl.
2.6.3 Determination of different forms of nitrogen side by side in fertilisers with ammonium, nitrate and urea nitrogen
The different proportions of a single sample solution shall be determined by:
2.6.3.1. Total nitrogen:
2.6.3.1.1. In the absence of nitrates by direct degradation according to Kjeldahl,
2.6.3.1.2. In the presence of nitrates in the aliquot proportion of the solution previously reduced according to Ulsche (powder iron in acidic environment) degradation according to Kjeldahl.
In both cases, the produced ammonia is determined by the distillation method 2.1.1.
2.6.3.2. Total nitrogen without nitrate nitrogen Kjeldahl decomposition after removal of nitrate with iron sulphate in acidic environment. The produced ammonia is determined by the distillation method 2.1.1.
2.6.3.3 Nitrate nitrogen from the difference between 2.6.3.1.2 and 2.6.3.2 or between 2.6.3.1.2 and the sum of soluble ammonium and urea nitrogen (2.6.3.4 + 2.6.3.5).
2.6.3.4. Ammonium nitrogen by sealing ammonia through the cold from a weak alkaline environment through air. The ammonia is bound in a known volume of a volumetric solution of sulphuric acid and determined as in the distillation method 2.1.1.
2.6.3.5. Urea nitrogen
either
2.6.3.5.1 by converting urea by means of urease into ammonia, which is titrated by a graduated hydrochloric acid solution,
or
2.6.3.5.2. Weighted xanthhydrol; the biuret is also precipitated, but can be identified with urea nitrogen without great error, since its absolute content in compound fertilisers is generally small,
or
2.6.3.5.3 by calculation of differences in the table:
| případ | N – NO3- | N – NH4+ | N – CO(NH2)2 |
|---|---|---|---|
| 1 | nepřítomen | přítomen | (2.6.3.1.1) – (2.6.3.4) |
| 2 | přítomen | přítomen | (2.6.3.2) – (2.6.3.4) |
2.7. Determination of urea (amidical) nitrogen by photometric method
Urea reacts in an acidic environment with 4-dimethylaminobenzaldehyde to produce a yellow coloured condensation product whose absorbance is measured at a wavelength of 420 nm. The method is intended for selective determination of urea (amidic) nitrogen in both single and compound fertilisers. It cannot be used for fertilisers containing or releasing substances that also form colour compounds with 4-dimethylaminobenzaldehyde, such as cyanamide, thiourea, primary and secondary aromatic amines, hydrazine and derivatives with one free amino group, semicarbazides.
2.8. Determination of total nitrogen according to Jodlbauer
Nitrates in the sulphuric acid environment reduce phenol to p-nitrophenol, which is then reduced by zinc to p-aminophenol. This, together with the organic component of the sample, is decomposed by boiling sulphuric acid in the presence of a catalyst, whereby organically bound nitrogen is zineralised. The produced ammonium nitrogen, together with the originally present ammonium nitrogen after alkalisation, is distilled as an ammonia into a known volume of a volumetric sulphuric acid solution. The excess is determined by titration with a graduated sodium hydroxide solution.
3. Phosphorus
3.1. Methods of degradation and leaching of phosphates
3.1.1. Mineral acid decomposition
The sample is broken down by boiling with a mixture of sulphuric acid and nitric acid and all phosphoric acid is transferred to the solution. The method is intended for the degradation of samples of natural phosphate and phosphorus-containing fertilisers unless they contain more organic substances.
3.1.2. Phosphates soluble in formic acid (2%)
Phosphates are extracted from the sample with formic acid solution (2%). In doing so, phosphates are excluded mainly from the crumbling earth of crude phosphates, whereas "hard" crude phosphates are not excluded.
3.1.3. Extraction of citric acid-soluble phosphates (2%)
Phosphates are extracted from the sample with citric acid solution (2%). The method is mainly intended for fertilisers of the Thomas meal type or mixtures containing it.
3.1.4. Extraction of phosphates soluble in neutral ammonium citrate solution
Phosphates are extracted from the sample under prescribed conditions at 65 ° C by neutral (pH = 7,0) solution of ammonium citrate.
3.1.5. Extraction of phosphates soluble in basic ammonium citrate solution
3.1.5.1. Casting according to Petermann at 65 ° C
Phosphates are extracted from the sample at 65 ° C with an ammonium citrate base solution according to Petermann under specified conditions. The method consists primarily of hydrogen phosphate (CaHPO4.2H2O) dihydrate.
3.1.5.2. Flexing according to Petermann at room temperature
Phosphates are extracted from the sample at about 20 ° C with the basic ammonium citrate solution according to Petermann under specified conditions. The method is mainly designed for thermophosphates or thermically processed phosphates.
3.1.5.3. Joulie's excavation
Phosphates are extracted from the sample at about 20 ° C with an alkaline solution of ammonium citrate of the prescribed composition (or containing 8-hydroxyquinoline to bind magnesium excess) under specified conditions. The method is intended for the extraction of phosphorus bound in the form of alumina phosphate.
3.1.6. Exclusion of water-soluble phosphates
Phosphates are extracted from the sample with water at about 20 ° C under specified conditions. The method is intended for single and compound fertilisers containing water-soluble phosphates.
3.2. Methods for the determination of phosphates in leases
3.2.1. Weight determination as phosphomolibdenan quinoline
The method shall be applicable to all degradation solutions and leases obtained in accordance with paragraph 3.1., containing phosphorus in the form of simple phosphates. Alternatively present polyphosphates must be hydrolysed in advance. From a solution acidified with nitric acid with a solvent containing molybdenum sodium or ammonium, citric acid, quinoline, nitric acid and acetone, the yellow molybdenum phosphate of quinolinium precipitates under the prescribed conditions. The clot is filtered with a glass filter cup, washed, dried at 250 ° C and weighed. With all conditions it contains 3,207% P2O5. Determination does not disturb substances usually present in the solution, such as mineral and organic acids, soluble silicates, etc.
3.2.2. Photometric determination as molybdenum blue
The method is intended primarily for the determination of low phosphorus levels in organic fertilisers and other products. The rest of the sample after incineration (ash) is eliminated with hydrochloric acid and separated by filtration by insoluble residue and silicon acid. In the filter, the photometric determination of phosphate after conversion into molybdenum phosphate and the reduction in molybdenum-bound molybdenum to molybdenum blue by meta in a sulphite medium whose absorbance is measured.
3.2.3 Determination of free phosphoric acid
The aliquot fraction of the fertiliser water leaching is titrated with a graduated solution of sodium hydroxide to indicate dimethyl yellow in yellow. The acidity found is considered as phosphoric acid titrated to the first degree and expressed as free phosphoric acid. To increase the accuracy, the colour of the titrated solution is compared to that of the sodium dihydrogen phosphate solution with the same amount of indicator. The method is intended for the determination of free phosphoric acid in superphosphates.
4. Potassium
4.1. Methods of potassium leaching
4.1.1. Extraction of acid-soluble potassium
Potassium is extracted from the sample with a diluted hydrochloric acid for 15 minutes. Potassium is determined in a clear solution. The method is intended for both mineral solid fertilisers with potassium-released mineral acids and for various excipients of a predominantly inorganic nature.
4.1.2. Exclusion of water-soluble potassium
The water-soluble potassium is added to the solution by boiling the sample with distilled water for 30 minutes. Potassium is determined in a clear solution. The method is intended for mineral solid, solution and suspension fertilisers.
4.2. Methods for determination of potassium in leases
4.2.1. Weighted determination as potassium tetraphenylborate
From the aliquot of the test solution, the interference or presence of cyanamide by oxidation of bromine water, organic substances by active carbon, excess ammonium salts by sealing ammonia by boiling in a calcined solution, binding of disruptive cation with disodium salt of ethylenediaminetetraacetic acid and the rest of ammonium ions by formaldehyde is removed. Then potassium is precipitated from a slightly alkaline environment with sodium tetrafylborate solution and the precipitate is filtered after cooling with a glass filter cup, washed, dried at 120 ° C and weighed. The method is suitable for all fertiliser leaching if they do not contain an excessive quantity of organic substances, not removable by activated carbon.
4.2.2 Determination of atomic absorption spectrometry method
The method is intended primarily for the determination of total potassium in organo-mineral and organic fertilisers (including manure). The sample is burned at 450 ° C and the ash is distributed with dilute hydrochloric acid. After separation of insoluble residue and silica acid in the solution, potassium is determined by the atomic absorption spectrometry method. The atomic emission spectrometry method (flame photometry or ICP) is also allowed.
5. Calcium and magnesium
5.1. Methods of decomposition and leaching of calcium and magnesium
5.1.1. Hydrochloric acid decomposition
Dispose of the sample by evaporation with dilute (1 + 1) hydrochloric acid to dry and, if necessary, by oxidation of organic substances by several drops of nitric acid and the insoluble residue with excluded silica acid is filtered. In the filtration, calcium and magnesium are determined after the separation of secvioxides by complex titration on both fluoroexon (calcein) and on the eriochromic black T. The method is intended for materials produced by grinding of natural substances (limestone, dolomites) or by thermal treatment (lime of all types) or other matter with predominant carbonate or oxide or hydroxide binding of calcium and magnesium and silicate binding of the metallurgical slag type.
5.1.2 Exclusion of total calcium and magnesium with hydrochloric acid
For 30 minutes the sample is cooked with dilute (1 + 1) hydrochloric acid. After dilution, cooling and restocking, the solution is filtered. Clear filter shall be used for determination. The method is intended for samples containing calcium mainly in the form of sulphates at different degrees of hydration. It is controlled according to the calcium and sulphate content of the sample.
5.1.3. Extraction of water-soluble calcium or magnesium
For 30 minutes, the sample is cooked with distilled water. After dilution, cooling and restocking, the solution is filtered. Clear filter shall be used for determination. The method is intended for fertilisers for which calcium or magnesium content in water-soluble form is prescribed in the table of type fertilisers. It is controlled by calcium and sulphate content.
5.2. Methods for determining calcium and magnesium in leases
5.2.1 Comprehensive determination of calcium and magnesium
The aliquot proportions of solutions obtained by methods 5.1.1., 5.1.2. or 5.1.3 are titrated with a disodium salt of ethylenediaminetetraacetic acid on the one hand to the fluoroexon (calcein) indicator in a highly alkaline pH > 12 (calcium alone), on the other hand at pH 10,5 ± 0,1 on the eriochromate T (sum of calcium and magnesium) indicator. By subtracting both consumes, the consumption of EDTA solution for magnesium is determined. The interfering metal ions are masked with potassium cyanide.
Determination of calcium or magnesium by atomic absorption spectrometry
Calcium or magnesium shall be determined by the AAS method or ICP-AES method in leases, at a content not exceeding 10% CaO or MgO in the sample, after appropriate dilution into the calibration curve range for the instrument used and the measurement conditions.
5.2.3 Determination of calcium manganometrically after elimination as oxalane
Calcium is precipitated from the aliquot of the extract as calcium oxalate. This is dissolved in dilute sulphuric acid after filtration with a glass filter crucible and washing and the released oxalic acid is titrated with potassium permanganate solution. The method is suitable for CaO contents in the sample above 10%.
6. Sodium
6.1. Sodium leaching methods
6.1.1 Exclusion of total sodium with hydrochloric acid
Sodium is extracted from the sample by a dilute hydrochloric acid varnish in the same way as in method 5.1.2. Clear filter shall be used for determination.
6.1.2. Water-soluble sodium excretion
Sodium is extracted from the sample by boiling in distilled water in the same way as in method 5.1.3. Clear filter shall be used for determination.
6.2. Determination of sodium by the method of flame photometry
Sodium shall be determined by atomic emission spectrometry or ICP-AES, if necessary after dilution of the aliquot fraction in the leaching of 6.1.1 or 6.1.2. The determination of atomic absorption spectrometry is permitted.
7. Sulphur
7.1. Sulphur leaching methods in various forms
7.1.1 Excluding total sulphate sulphur
Sulphates are extracted from the sample for 30 minutes with a diluted (1 + 1) hydrochloric acid. Sulphates shall be determined in the aliquot of the clear filter. The sample weight is determined by the content of sulphates and calcium.
7.1.2 Excluding various forms of total sulphur
The method is intended for fertilisers containing sulphur in the form of elemental, thiosulphate, sulphite or sulphate. In a highly alkaline environment, the primary sulfur is converted into polysulphide and thiosulphate, which is oxidized by hydrogen peroxide to sulphate with any sulphite present in the next step. Sulphates shall be determined in the whole clear filter or aliquot.
7.1.3 Exclusion of water-soluble sulphate
Water-soluble sulphates are removed from the sample for 30 minutes by boiling in distilled water. After dilution, cooling and replenishment, the solution is filtered and sulphate is determined in the aliquot fraction.
7.1.4 Excluding various forms of water-soluble sulphur
The method is intended for fertilisers containing water-soluble sulphur in the form of thiosulphate, sulphite or sulphate. The sample is shaken for 30 minutes with distilled water in cool conditions. In the aliquot fraction of pure filtration, thiosulphate and sulphite are oxidized by hydrogen peroxide after alkalisation, which is determined after acidification with the initially present sulphate.
7.2. Weighted determination of sulphur in leases
In the exclusions obtained by methods 7.1.1, 7.1.2, 7.1.3 or 7.1.4, barium sulphate, which is filtered, annealed and weighed, shall be precipitated in either the total volume or aliquot of the acidic environment by barium sulphate.
7.3. Determination of elementary sulphur
Elementary sulphur is extracted from the sample in Soxhlet's sulphide extractor. The extracted sulphur shall be determined by weighing. The purity obtained and the weighted sulphur by sublimation and weighing of the remainder shall be checked as appropriate.
8. Chlorine
8.1. Determination of chlorides in the absence of organic substances
Chlorides excluded from water samples shall be determined according to Volhard. They collide with an excess of the volumetric solution of silver nitrate in an acidic environment. The excess is titrated with a graduated solution of ammonium thiocyanate in the presence of iron-ammonium sulphate.
9. Track elements
9.1. Determination of trace elements at a content not exceeding 10%
9.1.1 Loading:
9.1.1.1 Exclusion of total trace elements
The trace elements are excluded from the sample by boiling dilute hydrochloric acid under specified conditions.
9.1.1.2. Exclusion of water-soluble forms of trace elements
The trace elements are extracted from the sample with about 20 ° C hot water under specified conditions.
9.1.2 Determination of trace elements in exclusions:
9.1.2.1 Determination of manganese, copper, cobalt, zinc and iron by atomic absorption spectrometry.
After any limitation of interference, the glues shall be diluted in such a way that the concentration of the determined element lies in the optimal measurement area of the spectrometer at the appropriate wavelength, with all procedures in the instructions supplied by the manufacturer of the instrument.
9.1.2.2 Determination of boron by spectrophotometric method
The BO33-ions form a yellow complex with Azomethin H at pH (5,2 ± 0,2). The absorbance of the solution is measured at a wavelength of 410 nm.
Determination of molybdenum by spectrophotometry
In an acidic environment, Mo (V) with SCN ions is a yellow orange complex (MoO (SCN) 5). The complex is extracted into n-butyl acetate. Disturbing ions remain in the water phase. The absorbance of the yellow orange complex is measured at 470 nm.
9.2. Determination of trace elements at content above 10%
9.2.1 Loading:
9.2.1.1 Exclusion of total trace elements
The trace elements are excluded from the sample by boiling dilute hydrochloric acid under specified conditions.
9.2.1.2. Exclusion of water-soluble forms of trace elements
The trace elements are extracted from the sample with about 20 ° C hot water under specified conditions.
9.2.2 Determination of trace elements in exclusions:
9.2.2.1 Determination of zinc and iron by atomic absorption spectrometry.
After any limitation of interference, the glues shall be diluted in such a way that the concentration of the determined element lies in the optimal measurement area of the spectrometer at the appropriate wavelength. all procedures in the instructions supplied by the manufacturer of the instrument concerned.
9.2.2.2 Determination of boron by acidimetric titration.
Very weak boric acid forms a more potent manitoboric acid, which can be titrated by a volumetric solution of sodium hydroxide to pH = 6,3 with D-manite (as with other organ. substances with more OH-groups)
9.2.2.3 Determination of cobalt by dragonfly method.
Cobalt (III) gives with 1-nitroso-2 naphthol a red clot Co (C10H6ONO) 3.2H2O. The cobalt is precipitated in an environment of acetic acid by 1-nitroso-2-naphthol. After filtration and washing, the clot is dried to constant weight and weighed as Co (C10H6ONO) 3. 2H2O.
9.2.2.4 Determination of copper by titration method.
The copper ion is reduced to copper by potassium iodide in a slightly acidic environment. The excluded iodine is titrated with a graduated solution of sodium thiosulphate in the presence of starch as an indicator.
9.2.2.5. Determination of manganese by titration method
Chloride ions present in the leaching process are removed by the sulphuric acid boiling. Manganese is oxidized by bismuth in nitric acid. The manganese produced is reduced by the iron sulphate solution. Its excess is titrated with potassium permanganate solution.
9.2.2.6. Determination of molybdenum by weight method
It provides 8-hydroxyquinoline (oxin) with molybdenum in a slightly acidic environment in the presence of EDTA precipitate. The excluded yellow precipitate is filtered, washed and dried to constant weight as MoO2 (C9H6NO) 2.
10. Risk elements
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Regulation Information
| Citation | Decree of the Ministry of Agriculture No. 475 / 2000 Coll., amending Decree of the Ministry of Agriculture No. 273 / 1998 Coll., on collection and chemical analysis of fertiliser samples |
|---|---|
| Regulation Type | Order |
| Author | - |
| Collection | Code of Laws |
| Date of Promulgation | 29.12.2000 |
|---|---|
| Effective from | 01.01.2001 |
| Effective until | - |
| Status | Valid |
Legal Areas:
Administrative law
Agriculture
The regulation text is for informational purposes only.
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