WO2007019657A1 - Procede d'obtention de granule de phosphore a liberation graduee dans le sol et produit ainsi obtenu - Google Patents

Procede d'obtention de granule de phosphore a liberation graduee dans le sol et produit ainsi obtenu Download PDF

Info

Publication number
WO2007019657A1
WO2007019657A1 PCT/BR2006/000162 BR2006000162W WO2007019657A1 WO 2007019657 A1 WO2007019657 A1 WO 2007019657A1 BR 2006000162 W BR2006000162 W BR 2006000162W WO 2007019657 A1 WO2007019657 A1 WO 2007019657A1
Authority
WO
WIPO (PCT)
Prior art keywords
phosphorus
soil
granule
polymer
gradual release
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/BR2006/000162
Other languages
English (en)
Inventor
Antonio Carlos De Gissi Junior
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2007019657A1 publication Critical patent/WO2007019657A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
    • C05B1/02—Superphosphates
    • 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
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/30—Layered or coated, e.g. dust-preventing coatings
    • C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer

Definitions

  • the petitioner obtains, with the introduction of the process of phosphorus chemical element release, the reduction of the need of applying a great amount of fertilizers in soil, being this reduction about 50%, according to data obtained from laboratory experiments and field tests, of the covered phosphorus product, with proved non-endangered farming productivity.
  • phosphorus element applied in soil strongly reacts with other preexisting elements and thus, contrarily to the other nutrients, phosphorus element assumes a particularity of being applied in great amount to get an acceptable nutritional level to the cultivable food.
  • the predominant forms are H 2 Po 4 " and HPO 4 2" , and the relationship depends on the pH value of the solution. At pH value of 7.20, the amounts are similar. Below, this pH value, the most common condition on cultivated soils, the H 2 Po 4 " form prevails.
  • organic phosphorus which may represent between 20 and 70% of phosphorus in the cultivable layer.
  • the contribution of organic phosphorus will be proportional to the organic material on soil, being this basically formed by esters of orthophosphoric acid mainly represented by inositol phosphates, lipidic phosphorus, nucleic acids, nucleotides and phosphated sugars.
  • the recognized forms to fix phosphorus in soil, through precipitation or adsorption, are the responsible to retain it in soil, obligating the use of excessive amounts - it is proved the volume used exceeds about 50% of the technical index, doubling the application costs.
  • the gradual release of phosphorus is due to the capability of polymers to retain macro and micronutrients inside its helical chains, releasing them gradually or when the roots enter into these chains and adsorb such elements.
  • Figure 1 shows the structure of phosphate granule coated with polymers by a schematic way.
  • Figure 2 shows a comparison through photos using Scanning Electron Microscopy (SEM) technique, between the simple superphosphate granule with no polymer coating and the simple superphosphate granule with polymer coating.
  • SEM Scanning Electron Microscopy
  • Table 1 shows the physical and chemical characteristics of LVd used in the experiment to evaluate the dynamics of phosphorus release from phosphated fertilizers using sorghum plants.
  • Chart 1 shows the experimental results obtained in greenhouses, comparing the production of dry mass in the five treatments.
  • Chart 2 shows the test results obtained in greenhouses, comparing the general productivity in the five treatments.
  • Table 2 shows the physical and chemical characteristics of LVd used in the experiment to evaluate the phosphorus release from phosphated fertilizers to maize plants in field conditions.
  • Table 3 shows the treatments used during the experiment to evaluate the phosphorus release from phosphated fertilizers to maize plants in field conditions.
  • Chart 3 shows the results obtained of phosphorus concentrations in leaves of maize plants collected during the experiment in field conditions.
  • Chart 4 shows the results obtained to the productivity of maize plants cultivated in LVd fertilized soil with different sources of phosphorus.
  • the experiment was performed using sorghum plants in greenhouse, in 5-kg vases and controlled temperature (28 + 5 0 C), at the Laborat ⁇ rio de Biogeoqu ⁇ mica do Departamento de Tecnologia da Faculdade de Ciencias Agrarias e Veterinarias da Universidade Estadual Paulista, Jaboticabal Campus.
  • test-plant was the sorghum grain bearing
  • the grains and rod were separately weighed.
  • the rod was joined to the stems and leaves.
  • the productivity was evaluated by the dry matter production of grains, corrected to 10% of moisture. We have evaluated the dry matter production at 60-65 0 C of roots, aerial part (stem+leaves+rod) and total (aerial part+roots).
  • the plant samples were analyzed related to the phosphorus content in the nitric/perchloric digestion extract.
  • the soil used during the experiment was a dystrophic Red Latosoil (LVd), whose chemical characterization at the beginning of the experiment is presented on Table 2. As we can see it is a medium-fertility soil, with base-saturation near to the ideal to maize culture, and it was no necessary to make the liming, being AGN 2012 hybrid maize as test plant.
  • LVd dystrophic Red Latosoil
  • the experimental outline was the causality blocks, including 10 treatments in 3 repetitions.
  • the tested treatments and the used doses during sowing are showed on Table 3.
  • the experiment has used divided areas of 35 m 2 (5 x 7 m), being the manuring calculated according to the soil analysis and indications of Bulletin # 100, resulting in 30 kg N/ha (230 g urea/parcel), 70 kg P 2 O 5 /ha and 50 kg K 2 O/ha (300 g KCI/parcel) per groove.
  • Foliar samples were obtained according to Malavolta et al. (1997), gathering the first opposite leave and below the first spike of ten (10) plants by parcel, 67 days after sowing.
  • the phosphorus concentrations extracted through Mehlich 1 extractor in soil samples were analyzed, and complementary total phosphorus concentrations were analyzed in the leave samples.
  • Chart 3 shows the obtained results to phosphorus concentration in leave samples at the indicated time to evaluate the nutritional state of maize plants. We can see there was no significant difference among the treatments, being the phosphorus content inside the normal range considered by Malavolta et al (1997).
  • the Brazilian production average is 1.8 t/ha and the worldwide average is 3.3, being USA the best known productivity in the state-of-art, with the value of 6.9 t/ha (Malavolta et al. 1997).
  • SS Simple Superphosphate
  • ST Triple Superphosphate
  • MAP MAP
  • Figure 2 presents a second photo, also obtained by Scanning Electron Microscopy (SEM) technique, where it is possible to verify the granule of Simple Superphosphate, Triple Superphosphate or MAP (A), duly coated with polymer layers (B), more specifically LGPL01 , LGPS02, LGPS03 and LGPL04.
  • SEM Scanning Electron Microscopy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Fertilizers (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

Afin d'éliminer la fixation de phosphore par précipitation et adsorption, il est souhaitable d'augmenter l'utilisation d'élément de phosphore dans les cultures agricoles au moyen d'un ensemble de procédés créant une protection particulière sur le granule de phosphore (A) formé par simple superphosphate, triple superphosphate ou mono ammonium phosphate (A), revêtu de couches polymères (B). Ces couches polymères sont appliquées individuellement, la vaporisation s'effectue par cumulation, à savoir chaque nouvelle vaporisation de polymère est effectuée sur la précédente jusqu'à atteindre le granule de phosphore souhaité (A), représentant une réduction de 50 % de la quantité de phosphore appliquée sur le sol, ainsi qu'une réduction des pertes par adsorption.
PCT/BR2006/000162 2005-08-15 2006-08-11 Procede d'obtention de granule de phosphore a liberation graduee dans le sol et produit ainsi obtenu Ceased WO2007019657A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0504868-0A BRPI0504868A (pt) 2005-08-15 2005-08-15 processo para obtenção de gránulo de fósforo com liberação gradativa (l.g.p.) no solo e produto resultante
BRPI0504868-0 2005-08-15

Publications (1)

Publication Number Publication Date
WO2007019657A1 true WO2007019657A1 (fr) 2007-02-22

Family

ID=37757268

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2006/000162 Ceased WO2007019657A1 (fr) 2005-08-15 2006-08-11 Procede d'obtention de granule de phosphore a liberation graduee dans le sol et produit ainsi obtenu

Country Status (2)

Country Link
BR (1) BRPI0504868A (fr)
WO (1) WO2007019657A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB954555A (en) * 1959-10-13 1964-04-08 Archer Daniels Midland Co Improvements in or relating to delayed action granular fertilizers
US3295984A (en) * 1965-10-22 1967-01-03 Archer Daniel Midland Company Method of feeding animals a non-protein nitrogen source coated with copolymer of dicyclopentadiene and ester of unsaturated acid
US4011061A (en) * 1975-03-20 1977-03-08 Minnesota Mining And Manufacturing Company Articles providing sustained release and method of making
US4678710A (en) * 1984-10-22 1987-07-07 Showa Denko K. K. Coated particulate materials and method for manufacture thereof
US5399186A (en) * 1991-10-09 1995-03-21 Ici Canada, Inc. Apparatus and process for coating particles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB954555A (en) * 1959-10-13 1964-04-08 Archer Daniels Midland Co Improvements in or relating to delayed action granular fertilizers
US3295984A (en) * 1965-10-22 1967-01-03 Archer Daniel Midland Company Method of feeding animals a non-protein nitrogen source coated with copolymer of dicyclopentadiene and ester of unsaturated acid
US4011061A (en) * 1975-03-20 1977-03-08 Minnesota Mining And Manufacturing Company Articles providing sustained release and method of making
US4678710A (en) * 1984-10-22 1987-07-07 Showa Denko K. K. Coated particulate materials and method for manufacture thereof
US5399186A (en) * 1991-10-09 1995-03-21 Ici Canada, Inc. Apparatus and process for coating particles

Also Published As

Publication number Publication date
BRPI0504868A (pt) 2007-04-10

Similar Documents

Publication Publication Date Title
Pérez‐Álvarez et al. Towards a more sustainable viticulture: foliar application of N‐doped calcium phosphate nanoparticles on Tempranillo grapes
McLaughlin et al. The chemical nature of P accumulation in agricultural soils—implications for fertiliser management and design: an Australian perspective
Saha et al. Relative changes in phosphatase activities as influenced by source and application rate of organic composts in field crops
Bornø et al. Biochar modifies the content of primary metabolites in the rhizosphere of well-watered and drought-stressed Zea mays L.(maize)
US20110174031A1 (en) Use of natural extracts of tannin and non-tannin materials for improving soil fertility and providing a starter effect on cultivations, and a tannin and non-tannin phytocomposition therefor
US10519072B2 (en) Multi-nutrient granular fertilizer compositions and methods of using the same
Tambone et al. The effects of short-term compost application on soil chemical properties and on nutritional status of maize plant
Naeem et al. Investigating the effect of Aspergillus niger inoculated press mud (biofertilizer) on the potential of enhancing maize (Zea mays. L) yield, potassium use efficiency and potassium agronomic efficiency
Qayyum et al. Different nitrogen and biochar sources’ application in an alkaline calcareous soil improved the maize yield and soil nitrogen retention
Prasad et al. Phosphorus management
Sekhar et al. Phosphate rock with farmyard manure as P fertilizer in neutral and weakly alkaline soils
Orczewska et al. Soil acid phosphomonoesterase activity and phosphorus forms in ancient and post-agricultural black alder [Alnus glutinosa (L.) Gaertn.] woodlands
Lasota et al. Effect of dolomite fertilization on nutritional status of seedlings and soil properties in forest nursery
Ajema et al. Effects of pot sizes and biocha r base media composition on nutrient uptake of coffee (Coffea arabica L.) seedlings in south Ethiopia
WO2007019657A1 (fr) Procede d'obtention de granule de phosphore a liberation graduee dans le sol et produit ainsi obtenu
Dhillon et al. Effect of incorporation of crop residues and organic manures on adsorption/desorption and bio-availability of phosphate
US9346718B2 (en) Method for recycling a byproduct of the phosphate fertilizer industry, soil conditioner, and soil conditioner manufacturing process
CN102965118A (zh) 一种含有有机酸菌丝体的土壤改良剂及其制备方法
Unagwu et al. Changes in soil nutrient status of a coarse-textured Ultisol and tomato growth performance following composted sawdust-household waste application
Chien et al. Phosphate fertilisers and management for sustainable crop production in tropical acid soils
Tătaru-Fărmuș et al. Changes in Soil Ph Due to the Use of Chemical Fertilizers
Padhi et al. The role of molybdenum in crop production
Singh et al. Effect of incorporation of crop residues and organic manures on adsorption/desorption and bio-availability of phosphate
Kamprath Fertility management of low activity clay soils
Walkiewicz et al. Soil nutrient richness determines the response of microbial activity and diversity to biofertilizer application in maize cultivation

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06761041

Country of ref document: EP

Kind code of ref document: A1