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Slow-release fertilizerA synthetic apatite containing agronutrients and a method for making the apatite are disclosed. The apatite comprises crystalline calcium phosphate having agronutrients dispersed in the crystalline structure. The agronutrients can comprise potassium, magnesium, sulfur, iron, manganese, molybdenum, chlorine, boron, copper and zinc in amounts suited for plant growth. The apatite can optionally comprise a carbonate and/or silicon solubility control agent. The agronutrients are released slowly as the apatite dissolves.
Document ID
19930008082
Acquisition Source
Legacy CDMS
Document Type
Other - Patent Application
Authors
Ming, Douglas W. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Golden, D. C. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
September 6, 2013
Publication Date
October 16, 1992
Subject Category
Mechanical Engineering
Report/Patent Number
NAS 1.71:MSC-21953-1-NP
Patent Number: NASA-CASE-MSC-21953-1-NP
Patent Application Number: US-PATENT-APPL-SN-963348
Report Number: NAS 1.71:MSC-21953-1-NP
Accession Number
93N17271
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-MSC-21953-1-NP
Patent Application
US-PATENT-APPL-SN-963348

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