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The invention relates to a long-acting phosphorus fertilizer that contains a phosphorus source and an iron source, at least 10% by weight of the phosphorus present in the phosphorus fertilizer being insoluble in water but soluble in neutral ammonium citrate, the phosphorus fertilized being in the fo...

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Bibliographic Details
Main Authors LASSILA,SEPPO, POUKARI,JUHANI, YLINEN,PAULA
Format Patent
LanguageFinnish
Swedish
Published 18.10.2002
Edition7
Subjects
CHEMISTRY
FERTILISERS
MANUFACTURE THEREOF
METALLURGY
PHOSPHATIC FERTILISERS
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Summary:The invention relates to a long-acting phosphorus fertilizer that contains a phosphorus source and an iron source, at least 10% by weight of the phosphorus present in the phosphorus fertilizer being insoluble in water but soluble in neutral ammonium citrate, the phosphorus fertilized being in the form of granules or pellets. The invention additionally relates to a method for fertilizing acid, iron-poor forest soils, wherein a phosphorus fertilizer such as this is spread on the forest soil to be fertilized, the iron present in the fertilizer preventing the phosphorus from being leached out, centrifugal distribution being preferably used.
Bibliography:Application Number: FI20010000782