New! View global litigation for patent families

UST102902I4 - Granular urea - urea phosphate fertilizer - Google Patents

Granular urea - urea phosphate fertilizer Download PDF

Info

Publication number
UST102902I4
UST102902I4 US06308875 US30887581A UST102902I4 US T102902 I4 UST102902 I4 US T102902I4 US 06308875 US06308875 US 06308875 US 30887581 A US30887581 A US 30887581A US T102902 I4 UST102902 I4 US T102902I4
Authority
US
Grant status
Grant
Patent type
Prior art keywords
urea
phosphate
suitable
losses
nitrogen
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.)
Pending
Application number
US06308875
Inventor
Fayez E. Khasawneh
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.)
TENNESSEE VALLEY AUTHORITY A CORP OF US
Original Assignee
TENNESSEE VALLEY AUTHORITY A CORP OF US
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
Grant date

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C05FERTILISERS; MANUFACTURE THEREOF
    • C05BPHOSPHATIC FERTILISERS
    • C05B17/00Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S71/00Chemistry: fertilizers
    • Y10S71/902Nitrification inhibition
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S71/00Chemistry: fertilizers
    • Y10S71/903Soil conditioner

Abstract

Solid granular fertilizers based on the inclusion of phosphoric acid as an additive to urea and consisting of a homogeneous mixture of two solid crystalline phases, i.e., urea and urea phosphate, and ranging in its overall N:P2 O5 weight ratio from about 2:1 to about 5:1, preferably from about 2:1 to 3:1. These fertilizers are suitable for surface application, especially where immediate incorporation into the soil is not practicable, such as on pastures, or undesirable such as in conjunction with reduced tillage practices, and generally wherever it is necessary or desirable to apply nitrogen on the surface of soil, ensuring substantially reduced losses of urea nitrogen by volatilization, and causing a delay of 4 to 7 days in the commencement of such losses. The product is also suitable for band application, resulting in eliminating the problems of seedling damage and crop stand reduction which are associated with urea or combinations of urea and ammonium phosphates, particularly diammonium phosphate.
US06308875 1981-10-05 1981-10-05 Granular urea - urea phosphate fertilizer Pending UST102902I4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06308875 UST102902I4 (en) 1981-10-05 1981-10-05 Granular urea - urea phosphate fertilizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06308875 UST102902I4 (en) 1981-10-05 1981-10-05 Granular urea - urea phosphate fertilizer

Publications (1)

Publication Number Publication Date
UST102902I4 true UST102902I4 (en) 1983-04-05

Family

ID=23195752

Family Applications (1)

Application Number Title Priority Date Filing Date
US06308875 Pending UST102902I4 (en) 1981-10-05 1981-10-05 Granular urea - urea phosphate fertilizer

Country Status (1)

Country Link
US (1) UST102902I4 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797986A (en) * 1995-02-01 1998-08-25 Ecolab Inc. Floor cleaning method
US6432906B1 (en) 1995-02-01 2002-08-13 Ecolab Inc. Solid acid cleaning block and method of manufacturing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5797986A (en) * 1995-02-01 1998-08-25 Ecolab Inc. Floor cleaning method
US6432906B1 (en) 1995-02-01 2002-08-13 Ecolab Inc. Solid acid cleaning block and method of manufacturing

Similar Documents

Publication Publication Date Title
Amberger Research on dicyandiamide as a nitrification inhibitor and future outlook
US4581056A (en) Synergistic senescence delaying foliar fertilizer composition and method of using same to delay senescence in field crops
US4698090A (en) Process for preparation of compositions for modifying plant growth; compositions for plant growth modification; and method for the use thereof
Buwalda et al. Host-fungus competition for carbon as a cause of growth depressions in vesicular-arbuscular mycorrhizal ryegrass
Krogmeier et al. Phytotoxicity of foliar-applied urea
Terman et al. Volatilization Losses of Nitrogen from Surface-Applied Fertilizers, as Measured by Crop Response1
Warnock Micronutrient Uptake and Mobility Within Corn Plants (Zea mays L.) in Relation to Phosphorus-induced Zinc Deficiency 1
Fox et al. Nitrogen Fertilizer Source, and Method and Time of Application Effects on No-till Corn Yields and Nitrogen Uptakes 1
Lunin et al. Salinity-Fertility Interactions in Relation to the Growth and Composition of Beans. I. Effect of N, P, and K 1
US5707418A (en) Inorganic phosphorous fertilizer
US3059379A (en) Fertilizer capsule
US4321078A (en) Slow release fertilizer composition
Shelton et al. Inorganic Phosphorus Fractions and Their Relationship to Residual Value of Large Applications of Phosphorus on High Phosphorus Fixing Soils 1
Shoop et al. Differential Responses of Grasses and Legumes to Liming and Phosphorus Fertilization 1
Stephen et al. Pot experiments on urea as a fertilizer
Witty et al. Slow-release 15N fertilizer formulations to measure N2-fixation by isotope dilution
CN1299794A (en) Controllable efficient organic and inorganic composite fertilizer
Gissel‐Nielsen Uptake and distribution of added selenite and selenate by barley and red clover as influenced by sulphur
Smika et al. Chemical properties and moisture extraction in rangeland soils as influenced by nitrogen fertilization
Mortvedt Crop response to applied zinc in ammoniated phosphate fertilizers
Beaton et al. Coated Urea, Thiourea, Urea-Formaldehyde, Hexamine, Oxamide, Glycoluril, and Oxidized Nitrogen-Enriched Coal as Slowly Available Sources of Nitrogen for Orchardgrass 1
Bremner et al. Elimination of the adverse effects of urea fertilizer on seed germination, seedling growth, and early plant growth in soil
Grootjans et al. Influence of drainage on N-mineralization and vegetation response in wet meadows. II. Cirsio-Molinietum stands.
Ssali et al. The effects of phosphorus and nitrogen fertilizer level on nodulation, growth and dinitrogen fixation of three bean cultivars.
Shukla et al. Relative Efficiency of Several Zinc Sources for Corn (Zea mays L.) 1