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WO2018051311A1 - Produit fertilisant et son procédé de préparation - Google Patents

Produit fertilisant et son procédé de préparation Download PDF

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Publication number
WO2018051311A1
WO2018051311A1 PCT/IB2017/055654 IB2017055654W WO2018051311A1 WO 2018051311 A1 WO2018051311 A1 WO 2018051311A1 IB 2017055654 W IB2017055654 W IB 2017055654W WO 2018051311 A1 WO2018051311 A1 WO 2018051311A1
Authority
WO
WIPO (PCT)
Prior art keywords
fertilizer product
sulphur
total weight
amount ranging
fertilizer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2017/055654
Other languages
English (en)
Inventor
Josephine Antonette Sophia Amalorpavanathan
Kalpeshkumar Bhikhubhai SIDHPURIA
Satish Kumar
Yamini Sanjay Shah
Sunil SONI
Prakash Kumar
Kalpana Gopalakrishnan
Raksh Vir Jasra
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reliance Industries Ltd
Original Assignee
Reliance Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reliance Industries Ltd filed Critical Reliance Industries Ltd
Priority to BR112019005170-8A priority Critical patent/BR112019005170B1/pt
Publication of WO2018051311A1 publication Critical patent/WO2018051311A1/fr
Priority to ZA2019/01556A priority patent/ZA201901556B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F11/00—Other organic fertilisers
    • C05F11/08—Organic fertilisers containing added bacterial cultures, mycelia or the like
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F11/00—Other organic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F11/00—Other organic fertilisers
    • C05F11/10—Fertilisers containing plant vitamins or hormones
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/80—Soil conditioners

Definitions

  • the present disclosure relates to fertilizer products and their process of preparation.
  • Fertilizers are the auxiliary chemicals supplied to plants in order to externally provide nutrients essential for their growth. Fertilizers may be of inorganic or organic nature and are typically in forms such as solid - granulated or powdered, liquid, semisolid and aerosol. They contain a wide range of ingredients such as manure, bat guano, compost, peat moss, wood ash, nitrogen, phosphorus and potassium, calcium, sulphur, iron, zinc and magnesium.
  • Sulphur is an extremely vital element required for the growth of plants and can be provided to plants via fertilizers either in its elemental form or in its inorganic form such as sulphate (SO4 ) or as sulphur dioxide (SO2) from the atmosphere. Elemental sulphur can, however, be only absorbed by plants once it is oxidized to sulphate by soil bacteria in the presence of moisture/water. Furthermore, elemental sulphur can be used with or without carrier medium such as mineral clay, which is used as a soil additive, and it must be in finely divided form for quick microbial action to get converted into water soluble sulphates to be taken by plants.
  • carrier medium such as mineral clay
  • Micronized sulphur in its elemental form is slowly oxidized to sulphates by soil bacteria such as Thiobacillus. Addition of sulphur enhances availability of necessary nutrients in the soil for plants or crops, which results in improvement in the quality and yield of the agricultural crops. Furthermore, sulphur in its elemental form acts as a pesticide and/or a fungicide against certain soil pests and micro-organisms. Sulphur is suitably applied in its elemental form and upon blending produces dust particles which are harmful to the eyes and hazardous for health.
  • a hot process to reduce the dust formation by mixing bentonite clay with sulphur is known.
  • molten sulphur is used to coat the bentonite clay during production stage.
  • the bentonite clay breaks up to release sulphur particles.
  • the molten hydrophobic sulphur, that coats the bentonite clay using hot process prevents bentonite clay from picking up water and swelling quickly.
  • hot process utilizing molten sulphur pellets does not quickly disperse into fine sulphur particles resulting into slower oxidation of sulphur.
  • 350/MUM/2014 there is disclosed a process for preparation of a fertilizer product comprising elemental sulphur, at least one swelling agent, at least one binding agent, at least one plant growth regulator, and optionally at least one inorganic material.
  • the fertilizer product as disclosed in 350/MUM/2014, increases the water holding capacity and slowly releases the ingredients which make the fertilizer product very well suited for agriculture and horticulture related application. However, the dispersion time of the fertilizer product and the conversion rate of sulphur to sulphate are less.
  • An object of the present disclosure is to ameliorate one or more problems of the prior art or to at least provide a useful alternative.
  • An object of the present disclosure is to provide a fertilizer product with improved dispersion properties.
  • Another object of the present disclosure is to provide a fertilizer product with improved conversion of sulphur to sulphates.
  • Still another object of the present disclosure is to provide a process for the preparation of a fertilizer product.
  • the present disclosure relates to a fertilizer product and process for the preparation thereof.
  • a fertilizer product which comprises micronized elemental sulphur having particle size ranging from 45 ⁇ to 250 ⁇ , in an amount ranging from 70 wt% to 97 wt% of the total weight of the fertilizer product; at least one dispersing agent in an amount ranging from 0.1 wt% to 1 wt% of the total weight of the fertilizer product; at least one swelling agent in an amount ranging from 0.1 wt% to 10 wt% of the total weight of the fertilizer product; at least one binding agent in an amount ranging from 0.3 wt% to 30 wt% of the total weight of the fertilizer product; at least one sulphur solubilizing microbe having a concentration in the range of 10 s cells/ml to 10 10 cells/ml; and at least one mineral clay in an amount ranging from 0.5 wt% to 30 wt% of the total weight of the fertilizer product; and at least one plant growth hormone in an amount ranging from 0.00
  • the fertilizer product is characterized by moisture content ranging from 0.1 wt% to 1.0 wt , dispersion time in the range of 2 minutes to 300 minutes and pH of the product upon dispersion into soil is in the range of 6.5 to 2.5.
  • the swelling of the fertilizer product is in the range of 20 % to 100 % of the volume of the fertilizer product.
  • the size of the fertilizer product is in the range of 1.5 mm to 4 mm.
  • a process for the preparation of the fertilizer product comprises preparing a mixture, at a temperature ranging from 15 °C to 40 °C, by admixing micronized elemental sulphur; at least one dispersing agent; at least one swelling agent; at least one binding agent; at least one sulphur solubilizing microbe; at least one mineral clay; water; and at least one plant growth hormone.
  • the so formed mixture undergoes pugging followed by kneading to obtain a dough.
  • the dough is processed to obtain shaped articles such as pellets, pastilles, extrudates, beads, flakes, and granules by at least one method selected from the group consisting of pelletizing, pastilling, extruding and granulating. Further, the shaped articles are dried at a temperature ranging from 25 °C to 50 °C to obtain the fertilizer product.
  • Sulphur is an extremely essential element required for the growth of plants and can be provided to plants via fertilizer either in its elemental form or in its inorganic form such as sulphates (S0 4 " ). Elemental sulphur can, however, be only absorbed by plants once it is oxidized to sulphate by soil bacteria in the presence of moisture/water. The blending of elemental sulphur while preparing fertilizers lead to dust formation which is harmful to eyes and hazardous for health. Some fertilizers additionally contain mineral clay, such as bentonite clay, which is used as a soil additive. Bentonite clay absorbs the water which leads to swelling of the fertilizer and disperses the sulphur quickly.
  • mineral clay such as bentonite clay
  • the present disclosure envisage to formulate elemental sulphur bodies like pellets, extrudates or beads as a fertilizer or suitable for fertilizer composition with other soil nutrients, which can rapidly disintegrate and disperse into fine particles upon contact with water or moisture present in the soil and improve oxidation of sulphur to sulphates.
  • a fertilizer product in the form of shaped articles selected from the group consisting of pellets, pastilles, extrudates, beads, flakes, and granules, having size in the range of 1.5 mm to 3 mm.
  • the fertilizer product comprises micronized elemental sulphur having particle size ranging from 45 ⁇ to 250 ⁇ , in an amount ranging from 70 wt to 97 wt of the total weight of the fertilizer product, preferably from 87 wt to 97 wt of the total weight of the fertilizer product; at least one dispersing agent in an amount ranging from 0.1 wt to 1 wt of the total weight of the fertilizer product; at least one swelling agent in an amount ranging from 0.1 wt to 10 wt of the total weight of the fertilizer product, preferably from 0.5 wt to 5.0 wt of the total weight of the fertilizer product; at least one binding agent in an amount ranging from 0.3 wt to 30 wt of the total weight of the fertilizer product, preferably from 0.9 wt to 13 wt of the total weight of the fertilizer product; at least one sulphur solubilizing microbe having a concentration in the range of 10 s cells/ml to 10 10 cells/m
  • Micronized elemental sulphur being an extremely important nutrient for plants, demonstrates a wide array of activities. Sulphur enhances availability of the necessary plant nutrients in the soil, which improves the quality and yield of the agricultural crops.
  • sulphur is a vital element necessary for the synthesis of entities such as sulphur- containing amino acids and proteins, coenzyme A, biotin, thiamine, glutathione, chlorophyll, lipids and volatile oils. Furthermore, sulphur in its elemental form, acts as a pesticide and/or a fungicide against certain soil pests and micro-organisms.
  • the purity of the elemental sulphur is more than 99%, obtained from Claus process post hydrodesulphurization in oil refinery.
  • the dispersing agent can be selected from the group consisting of sodium salt of naphthalene sulphonate condensate, sodium alkyl naphthalene sulphonate blend, polyurethane, polyacrylate based dispersing agent, and calcium lignosulphonate.
  • the dispersing agent enhances effectiveness of elemental sulphur fertilizer by the rapid dispersion of formed pellets, pastilles, extrudates, beads, flakes, and granules into fine sulphur particles in the soil, having particle size in the range of 45-70 ⁇ .
  • the fine sulphur particles oxidize more quickly into sulphates that are absorbed quickly by plants as compared to larger sulphur particles.
  • the dispersing agent is sodium salt of naphthalene sulphonate condensate.
  • the swelling agent can be selected from the group consisting of polyacrylic acid, polyacrylamide polymer, cellulose grafted polyacrylamide polymer, potassium salt of cellulose grafted polyacrylamide and starch grafted polyacrylamide.
  • the function of the swelling agent is to absorb water present in the surrounding soil area such as irrigated water or precipitated atmospheric moisture once the fertilizer product is introduced in the soil. The product swells upon imbibition of water that lead to breaking of pellets, pastilles, extrudates, beads, flakes and granules to release fine sulphur particles along with other ingredients such as the plant growth hormone across a very wide perimeter.
  • the swelling agent is potassium salt of polyacrylamide grafted cellulose.
  • fertilizer products with low swelling agent content have good applicability in lands with high water content. This is because less quantity of swelling agent leads to less water holding capacity which is acceptable for high water content lands. Similarly, fertilizer products with high swelling agent content have a high water holding capacity and are thus useful for the regions facing water scarcity.
  • the binding agent can be selected from the group consisting of carboxymethyl cellulose, methyl cellulose, ethyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropylmethyl cellulose, hydroxyethylpropyl cellulose, corn starch, potato starch, starch acetates, ionic starches, polyvinyl alcohol, polyvinyl acetate, polyethylene glycol and polylactic acid. Binding agents are included in the fertilizer product of the present disclosure to facilitate effective binding between micronized elemental sulphur and the other ingredients in order to form an aesthetic and uniform fertilizer product.
  • the binding agent is ethyl cellulose.
  • the sulphur solubilizing microbe can be selected from the group consisting of Thiobacillus thiooxidans, Thiobacillus ferroxidans, Thiobacillus thioparus, Thiobacillus prosperus, Thiobacillus intermedius, Beggiatoa, and Thiobacillus denitrif icons .
  • the dispersing agent very rapidly disperses the elemental sulphur particles into fine sulphur particles.
  • the dispersed fine sulphur particles are oxidized into sulphate form by the sulphur solubilizing microbe, which acidifies the soil in the range of 6.5 to 2.5, and enables bioavailability of sulphate and other essential minerals.
  • the quick absorption of sulphate by the soil results in improved nutrition in the soil and enhanced crop yield.
  • the sulphur solubilizing microbe is Thiobacillus thiooxidans.
  • the mineral clay can be selected from the group consisting of kaolin, attapulgite, and bentonite.
  • the mineral clay facilitates the fertilizer product to absorb moisture from the soil. The absorption of moisture from the soil leads to swelling and disintegration of the fertilizer product into fine particles, which are suitable for oxidation.
  • the mineral clay is kaolin.
  • the plant growth hormone can be selected from the group consisting of auxins, gibberellins, cytokinins, and abscisic acid (ABA) which are indole-3-acetic acid (IAA), gibberellic acid (GA), and 6-benzyl adenine (BA), respectively.
  • the plant growth hormone is added to the fertilizer product of the present disclosure to increase the yield of the crops.
  • the plant growth hormone is gibberellic acid.
  • the fertilizer product of the present disclosure is in the form of shapes such as pellets, pastilles, extrudates, beads, flakes, and granules, which are rapidly dispersed into fine particles of sulphur in the soil using dispersing agents.
  • the dispersed fine particles of sulphur oxidize faster as compared to larger particles. Oxidation of the dispersed fine particles of sulphur into sulphates occurs in the presence of the sulphur solubilizing microbes. As the rate of oxidation of fine particles is greater than that of larger particles, more quantity of sulphur is available to plants in the form of sulphate, thereby improving the quality and the yield of the plants.
  • the fertilizer product is more suitable for oilseed crops such as sunflower seeds, groundnuts, soybeans, and the like.
  • the fertilizer product has moisture content in the range of 0.1 wt% to 1.0 wt , dispersion time in the range of 2 minutes to 300 minutes and pH of the product upon dispersion into soil is in the range of 6.5 to 2.5, which is suitable for plants, soil, and microbes.
  • the fertilizer product can swell in the range of 20 % to 100 % of the volume of the fertilizer product.
  • a process for the preparation of a fertilizer product comprises preparing a mixture, at a temperature ranging from 15 °C to 40 °C, by admixing micronized elemental sulphur; at least one dispersing agent; at least one swelling agent; at least one binding agent; at least one sulphur solubilizing microbe; at least one mineral clay; at least one plant growth hormone; and water.
  • the amount of water used is in an amount ranging from 5 wt% to 60 wt% of the total weight of the fertilizer product, to facilitate the formation of dough.
  • the process includes pugging and kneading of the so formed mixture to obtain a dough, followed by the processing of the so formed dough to obtain shaped articles.
  • the meaning of the term 'pugging' includes working the mixture into a soft, plastic condition without air pockets; thereby making it suitable for further processing.
  • the shaped articles upon drying at a temperature in the range of 25 °C to 50 °C yield the fertilizer product of the present disclosure.
  • the step of processing is at least one selected from the group consisting of pelletizing, pastilling, extruding, and granulating
  • the shaped article is at least one selected from the group consisting of pellets, pastilles, extrudates, beads, flakes, and granules.
  • a characteristic feature of the present disclosure is the inclusion of both the swelling agent and the binding agent enabling the admixing at an ambient temperature which significantly eases the processing and handling and makes the process cost effective.
  • Comparative Experiment 1 90 g of micronized elemental sulphur was mixed with 9.6 g of kaolin, 0.2 g of sodium lignosulphonate and 0.2 g of naphthalene sulphonate on dry weight basis at 30 °C and at atmospheric pressure to obtain a mixture. 15 ml of water was added to the mixture. Pugging of the so formed mixture was done followed by kneading to obtain a dough. The so formed dough was then extruded to obtain extrudates, having 3 mm size, using an extruder. The so formed extrudates were air dried at 35 °C. The moisture content of the dried extrudates was found to be less than 1 wt% on dry weight basis.
  • Comparative Experiment 2 90 g of micronized elemental sulphur was mixed with 9.7 g of kaolin, 0.1 g of sodium lignosulphonate, 0.1 g sodium alkyl naphthalene sulphonate blend and 0.1 g of sodium salt of naphthalene sulphonate condensate on dry weight basis at 30 °C and at atmospheric pressure to obtain a mixture. 22 ml of water was added to the mixture. Pugging of the so formed mixture was done followed by kneading to obtain a dough. The so formed dough was then extruded to obtain extrudates, having 3 mm size, using an extruder. The so formed extrudates were air dried at 35 °C.
  • the moisture content of the dried extrudates was found to be less than 1 wt% on dry weight basis. 10 g of so formed extrudates were added in 100 ml of water. It was observed that, the extrudates completely dispersed in the range of 45 to 70 micron size within 120 minutes. The dispersed extrudates showed reduction in pH from 4.5 to 4.1 within 30 days. The sulphate concentration of the solution was measured using UV/Vis spectrophotometer at 420 nm and was found to be 40 ppm within 30 days.
  • Sample-T The moisture content of the dried extrudates was found to be less than 1 wt% on dry weight basis which was named as Sample-T.
  • Reference sample was prepared by keeping all the ingredients in the same concentration without adding Thiobacillus thiooxidans (ATCC- 8085) solution and denoted as Sample-K.
  • the so formed dough was then extruded to obtain extrudates, having 3 mm size, using an extruder.
  • the so formed extrudates were air dried at 30 °C.
  • the moisture content of the dried extrudates was found to be less than 1 wt% on dry weight basis.
  • the so formed dough was then extruded to obtain extrudates, having 3 mm size, using an extruder.
  • the so formed extrudates were air dried at 35 °C.
  • the moisture content of the dried extrudates was found to be less than 1 wt% on dry weight basis.
  • 10 g of so formed extrudates were added in 100 ml of water. It was observed that, the extrudates completely dispersed in the range of 45 to 70 micron size within 20 minutes.
  • the dispersed extrudates showed reduction in pH from 4.5 to 2.3 within 30 days.
  • the sulphate concentration of the solution was measured using UV/Vis spectrophotometer at 420 nm and 5 was found to be 99 ppm within 30 days.
  • Table 1 below shows the details of comparative experiments 1-5 and of experiment 6 (of the present disclosure).
  • the present disclosure described herein above has several technical advantages including, but not limited to, the realization of: a dust-free, economical, toxic metal-free elemental sulphur and a sulphur solubilizing microbe containing fertilizer product as a feed for horticultural purposes;
  • a fertilizer product for plant nourishment a fertilizer product that is of multi-functional nature as it provides rapid dispersion of sulphur pellets, pastilles and the like into fine sulphur particles, as the dispersed fine sulphur particles oxidize more quickly to sulphate forms;

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Botany (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Biochemistry (AREA)
  • Fertilizers (AREA)

Abstract

La présente invention se rapporte à des produits fertilisants et à un procédé permettant leur préparation. Le produit fertilisant comprend du soufre élémentaire micronisé, au moins un agent dispersant et au moins un microbe solubilisant le soufre. Le produit fertilisant est de nature multifonctionnelle car il fournit une dispersion rapide de granulés, de pastilles de soufre et analogues en fines particules de soufre, étant donné que les particules fines dispersées s'oxydent plus rapidement jusqu'aux formes sulfate. Le produit fertilisant convient pour des applications agricoles.
PCT/IB2017/055654 2016-09-19 2017-09-19 Produit fertilisant et son procédé de préparation Ceased WO2018051311A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR112019005170-8A BR112019005170B1 (pt) 2016-09-19 2017-09-19 Produto fertilizante e um processo para preparação do mesmo
ZA2019/01556A ZA201901556B (en) 2016-09-19 2019-03-12 Fertilizer product and a process for preparation thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201623031867 2016-09-19
IN201623031867 2016-09-19

Publications (1)

Publication Number Publication Date
WO2018051311A1 true WO2018051311A1 (fr) 2018-03-22

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PCT/IB2017/055654 Ceased WO2018051311A1 (fr) 2016-09-19 2017-09-19 Produit fertilisant et son procédé de préparation

Country Status (2)

Country Link
WO (1) WO2018051311A1 (fr)
ZA (1) ZA201901556B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109970489A (zh) * 2019-04-09 2019-07-05 新昌县大船畈生物科技有限公司 生物有机肥料的制备方法
CN110484272A (zh) * 2019-09-10 2019-11-22 福建省农业科学院土壤肥料研究所 一种含盐藻皮的复合重金属钝化剂及其使用方法
WO2025233908A1 (fr) * 2024-05-10 2025-11-13 SABIC Agri-Nutrients Company Engrais comprenant du soufre élémentaire et des micro-organismes oxydant le soufre

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2269301A1 (fr) * 1999-04-16 2000-10-16 Enersul Holdings Inc. Inoculation bacterienne d'un engrais a base de soufre
US20120036906A1 (en) * 2009-04-16 2012-02-16 Sulphur Solutions, Inc. Dispersible sulphur fertilizer pellets
US20120128981A1 (en) * 2009-03-09 2012-05-24 Sulphur Solutions, Inc. Micronized sulphur powder and method of production of same
IN2014MU00350A (fr) * 2014-01-31 2015-09-11 Reliance Ind Ltd

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2269301A1 (fr) * 1999-04-16 2000-10-16 Enersul Holdings Inc. Inoculation bacterienne d'un engrais a base de soufre
US20120128981A1 (en) * 2009-03-09 2012-05-24 Sulphur Solutions, Inc. Micronized sulphur powder and method of production of same
US20120036906A1 (en) * 2009-04-16 2012-02-16 Sulphur Solutions, Inc. Dispersible sulphur fertilizer pellets
IN2014MU00350A (fr) * 2014-01-31 2015-09-11 Reliance Ind Ltd

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
BESHARATI H ET AL.: "Biosuper as a phosphate fertilizer in a calcareous soil with low available phosphorus", INTERNATIONAL JOURNAL OF AGRICULTURE AND AGRICULTURAL SCIENCES, vol. 1, no. 1, September 2013 (2013-09-01), pages 009 - 012 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109970489A (zh) * 2019-04-09 2019-07-05 新昌县大船畈生物科技有限公司 生物有机肥料的制备方法
CN110484272A (zh) * 2019-09-10 2019-11-22 福建省农业科学院土壤肥料研究所 一种含盐藻皮的复合重金属钝化剂及其使用方法
WO2025233908A1 (fr) * 2024-05-10 2025-11-13 SABIC Agri-Nutrients Company Engrais comprenant du soufre élémentaire et des micro-organismes oxydant le soufre

Also Published As

Publication number Publication date
BR112019005170A2 (pt) 2019-06-11
ZA201901556B (en) 2025-04-30

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