NITROGEN FERTILIZER COMPOSITIONS BASED ON POLYPHOSPHATE CAGED STRUCTURE

Urea based nitrogenous fertilizers are described which have reduced water solubility. The fertilizers are intended to provide environmental benefits and economic advantages over urea. The fertilizers are a product of reaction of urea with polyphosphates whereby the urea is trapped within the polypho...

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Bibliographische Detailangaben
1. Verfasser:	Varadachari, Chandrika
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM MANUFACTURE THEREOF METALLURGY MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS NITROGENOUS FERTILISERS PHOSPHATIC FERTILISERS
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Beschreibung
Zusammenfassung:	Urea based nitrogenous fertilizers are described which have reduced water solubility. The fertilizers are intended to provide environmental benefits and economic advantages over urea. The fertilizers are a product of reaction of urea with polyphosphates whereby the urea is trapped within the polyphosphate crystal cage. The fertilizers contain nitrogen, phosphorus and one or more of calcium, magnesium and iron. The fertilizers optionally contain other nitrogen compounds and optionally other micronutrients. The fertilizers are granular.