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WO2009125435A2 - Formulation améliorée à base de soufre appropriée pour l'agriculture biologique - Google Patents

Formulation améliorée à base de soufre appropriée pour l'agriculture biologique Download PDF

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Publication number
WO2009125435A2
WO2009125435A2 PCT/IN2009/000232 IN2009000232W WO2009125435A2 WO 2009125435 A2 WO2009125435 A2 WO 2009125435A2 IN 2009000232 W IN2009000232 W IN 2009000232W WO 2009125435 A2 WO2009125435 A2 WO 2009125435A2
Authority
WO
WIPO (PCT)
Prior art keywords
sulfur
particle size
formulation
granular formulation
granules
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/IN2009/000232
Other languages
English (en)
Other versions
WO2009125435A3 (fr
Inventor
Dipesh Kantisen Shroff
Ashwin Champraj Shroff
Ashok Kundanmal Jain
Rajendra Pralhad Chaudhari
Sanjay Shambhudhai Vaghela
Mayur Arvind Rana
Bhakti Rajesh Thakkar
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.)
C C SHROFF RESEARCH INSTITUTE
Excel Crop Care Ltd
CC Shroff Research Institute
Original Assignee
C C SHROFF RESEARCH INSTITUTE
Excel Crop Care Ltd
CC Shroff Research Institute
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
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Application filed by C C SHROFF RESEARCH INSTITUTE, Excel Crop Care Ltd, CC Shroff Research Institute filed Critical C C SHROFF RESEARCH INSTITUTE
Publication of WO2009125435A2 publication Critical patent/WO2009125435A2/fr
Publication of WO2009125435A3 publication Critical patent/WO2009125435A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/02—Sulfur; Selenium; Tellurium; Compounds thereof

Definitions

  • This invention relates to a novel formulation of sulfur suitable for organic agriculture which can be used as a fungicide or plant nutrient, method of manufacturing said formulation and manner of using the same.
  • Sulfur is a natural bio-pesticide particularly used as fungicide and insecticide on hundreds of food and feed crops, turf, ornamentals and residential sites. It is also used as a fertilizer. It is effective for reclamation of alkaline soils.
  • Sulfur is as important as nitrogen for synthesis of amino acids and chlorophyll. It is also essential for utilization of phosphorus and other nutrients. Sulfur plays a vital role in optimizing crop yield and quality. It increases size and weight of grain crops, particularly crops which have high nitrogen requirement, as sulfur enhances nitrogen utilization in plants. Plants do not respond to applied nitrogen in absence of adequate sulfur.
  • Sulfur is present in soil in both, organic and inorganic forms. It is not available to plants in organic form. As microorganisms present in soil decompose organic matter, the organic sulfur slowly gets converted into sulfate form, which is available to plants.
  • Fertilizers such as potassium sulfate, potassium magnesium sulfate, ammonium sulfate, gypsum, elemental sulfur etc. are used to meet sulfur requirement of plants.
  • Elemental sulfur containing fertilizers provide an advantage of slow release of sulfur over time as sulfur is gradually converted into available sulfate form. Moreover, elemental sulfur containing fertilizers being most concentrated in sulfur are cost effective as it saves on transportation cost.
  • WO 2008089568 describes a process for preparing micronized elemental sulphur mixture having a size distribution of 80% less than 20 microns for use as a sulphur based fertilizer.
  • dust form is difficult to handle. It has a risk of fire hazard as sulfur dust cloud can ignite with a spark. If sulfur is used in form of larger particles, the rate of conversion of the same by soil microorganisms into available sulfate form is too slow.
  • Granules of sulfur and bentonite produced by melting sulfur, mixing with bentonite and granulating are reported in the literature (US 4133669, US 4569859, WO 2008024007). However, such granules do not break in a controlled manner.
  • pellets of bentonite and fly sulphur produced by wet extrusion are known in the art. However, particle size of the fly sulphur is not controlled. Moreover, prolonged use of bentonite reduces permeability of soil.
  • a process for production of granular sulfur is disclosed in AU 3485878, wherein molten sulfur is foamed and solidified by cooling whilst in the foamed state and reducing it to particulate form. It is not possible to obtain appropriate particle size by this method.
  • a method for preparing powdered sulfur is disclosed in US 3891743.
  • molten sulfur is subjected to oxidizing treatment to get rid of hydrogen sulfide which is responsible for caking.
  • a free- flowing powder of sulfur is thus obtained.
  • granular form is preferable to powder form, as the former is much easy to handle.
  • CA 2043873 discloses a method for manufacturing granular sulfur using calcium lignosulfate as binder dispersant. The method involves grinding sulfur to particles of 200 U.S. mesh or less, which are separated from larger particles using an air classifier. Sulfur with particle size less than or equal to 200 U.S. mesh are mixed with calcium lignosulfate. The mixture is transported to pan granulator where fine mist of water is applied in order to facilitate agglomeration to form granules. The granules thus formed fall off the pan granulator and are dried and screened.
  • Sulfur in finely divided dust form is blown on the crops (as a fungicide).
  • crops as a fungicide
  • the disadvantage of this form is that it forms aggregation into large particles which are difficult to retain on the vegetation.
  • dust form is difficult to handle.
  • US3461080 which describes a dispersible formulation of sulfur prepared by homogenizing emulsion of molten sulfur in an aqueous solution of alkali metal lignosulphonate followed by drying the emulsion to obtain dry powder.
  • melting point of sulfur is about 113°C which is above boiling point of water
  • a pressure vessel is required in this process.
  • the ratio of lignosulphonate to sulfur in the formulation of said invention is at least 1: 1.5.
  • the product obtained is in powder form which is to be dispersed in water and sprayed. Powder form is not convenient from packing and handling point of view. There is high proportion of inactive component in this formulation.
  • the main object of present invention is to provide an eco-friendly granular formulation of sulfur which is non-dusty and easy to handle.
  • Another object of invention is to provide a method of using the invented formulation for effective control of plant disease.
  • Another object of invention is to provide a method of using the invented formulation as a plant nutrient.
  • the inventors of present invention have developed a granular formulation of sulfur and a process for manufacturing thereof, using appropriate ratio of sulfur to alkali metal lignosulphonate in such a way that it performs effectively as dispersing as well as binding agent.
  • the formulation when manufactured by said process has desired qualities of being adequately loaded with the active component and at the same time it is dust free, easy to handle and use.
  • sodium lignosulphonate may be preferred due to economic reasons as well as easy availability thereof.
  • the granular formulation of present invention may be prepared either by extrusion or by spray-granulation process.
  • the first method includes the steps of (1) grinding technical sulfur containing at least 1% moisture so as to eliminate fire hazard during the process of particle size reduction (2) adding an eco-friendly dispersing cum binding agent and mixing (3) further reducing the particle size by a suitable process such as air-jet milling so that more than 90% particles become ⁇ 10 ⁇ (4) adding water and mixing to prepare dough (5) extruding dough to form granules (6) drying the granules preferably at 50-65 0 C.
  • the second method includes the steps of (1) grinding technical sulfur containing at least 1% moisture so as to eliminate fire hazard during the process of particle size reduction (2) adding an eco-friendly dispersing cum binding agent 8B water, and mixing to prepare slurry (3) further reducing the particle size by a suitable process such as bead-milling so that more than 90% particles become ⁇ 10 ⁇ (5) passing the slurry through spray granulator to obtain granules.
  • the formulation of present invention is a contact fungicide which can be used by spraying an aqueous dispersion of said formulation.
  • a dispersion of 1.8 - 2.5 Kg. of the formulation prepared as given in Example- 1 in about 1000 lit. water can be sprayed per hectare to control powdery mildew.
  • Formulation prepared in accordance with other Examples can be similarly used by taking dose rate of 1.5 - 2.0 Kg of active component per hectare.
  • the formulation of present invention can also be used as plant nutrient.
  • the application rate should be determined depending on the need and deficiency of sulfur in soil.
  • the formulation can be used (as plant nutrient) by broadcasting on soil or by spraying on soil an aqueous dispersion of .the,, formulation. Soil application of the formulation of present invention at the rate of 3 Kg/ Acre caused an increase in yield by 6 - 15% in paddy.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Inorganic Chemistry (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

La présente invention concerne une formulation granulaire à base de soufre utile comme fongicide ou nutriment végétal, un procédé de fabrication de celle-ci et une manière d'utiliser celle-ci. La formulation est respectueuse pour l'environnement, non poussiéreuse, facile à manipuler et à utiliser. Le procédé de fabrication est simple et non dangereux.
PCT/IN2009/000232 2008-04-11 2009-04-09 Formulation améliorée à base de soufre appropriée pour l'agriculture biologique Ceased WO2009125435A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IN840/MUM/2008 2008-04-11
IN840MU2008 2008-04-11
IN923MU2009 2009-04-08
IN923/MUM/2009 2009-04-08

Publications (2)

Publication Number Publication Date
WO2009125435A2 true WO2009125435A2 (fr) 2009-10-15
WO2009125435A3 WO2009125435A3 (fr) 2009-12-03

Family

ID=41162349

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2009/000232 Ceased WO2009125435A2 (fr) 2008-04-11 2009-04-09 Formulation améliorée à base de soufre appropriée pour l'agriculture biologique

Country Status (1)

Country Link
WO (1) WO2009125435A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012053894A3 (fr) * 2010-10-18 2012-07-26 Ceradis B.V. Préparations à base de bio-soufre innovantes
WO2018207124A1 (fr) * 2017-05-10 2018-11-15 Thankapan VADAKEKUTTU Compositions agricoles
US11414357B2 (en) 2018-05-10 2022-08-16 Arun Vitthal SAWANT Crop nutrition and fortification composition
US11465946B2 (en) 2018-05-10 2022-10-11 Arun Vitthal SAWANT Crop nutrition and fortification composition
US12454495B2 (en) 2018-05-10 2025-10-28 SML Limitied Crop nutrition and fortification composition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10218162A1 (de) * 2002-04-23 2003-11-13 Basf Ag Verfahren zur chemischen Bodenentseuchung durch Applikation einer Mischung aus Schwefel und Komplexbildner
JP2004083486A (ja) * 2002-08-27 2004-03-18 Kumiai Chem Ind Co Ltd 水性懸濁硫黄組成物並びに該組成物を用いた植物病害及び害虫の防除方法
NZ578325A (en) * 2007-01-08 2012-08-31 Deepak Pranjivandas Shah Agricultural composition comprising an active sulphur ingredient

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012053894A3 (fr) * 2010-10-18 2012-07-26 Ceradis B.V. Préparations à base de bio-soufre innovantes
WO2018207124A1 (fr) * 2017-05-10 2018-11-15 Thankapan VADAKEKUTTU Compositions agricoles
US10492489B2 (en) 2017-05-10 2019-12-03 Arun Vitthal SAWANT Water disintegrable granular agricultural compositions
CN110868861A (zh) * 2017-05-10 2020-03-06 萨卡帕·瓦达卡库塔 农业组合物
CN110868861B (zh) * 2017-05-10 2022-03-15 萨卡帕·瓦达卡库塔 农业组合物
US11414357B2 (en) 2018-05-10 2022-08-16 Arun Vitthal SAWANT Crop nutrition and fortification composition
US11465946B2 (en) 2018-05-10 2022-10-11 Arun Vitthal SAWANT Crop nutrition and fortification composition
US12454495B2 (en) 2018-05-10 2025-10-28 SML Limitied Crop nutrition and fortification composition

Also Published As

Publication number Publication date
WO2009125435A3 (fr) 2009-12-03

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