Nitrogen availability of soluble and slow release nitrogen fertilizers as assessed by electroultrafiltration

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 01 Jan 1993 English Publisher:Springer Science and Business Media LLCJournal:Fertilizer Research, volume 34, pages 121-126 (issn: 0167-1731, eissn: 1573-0867,

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Authors: Vallejo, Antonio; Cartagena, Maria C.; Rodríguez, D.; Díez López, José Antonio;

doi: 10.1007/bf00750106

handle: 10261/82308

Nitrogen availability of soluble and slow release nitrogen fertilizers as assessed by electroultrafiltration

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Abstract

The efficiency of different nitrogenous fertilizers under forced leaching conditions was determinad in pot experiments using ryegrass as an indicator plant in a sandy loam soil. Treatments were: ON (unfertilized), AN (ammonium nitrate), U (urea), DAP (diammonium phosphate), T (Triabon), FK (Floranid Komplett) and CDU (crotonylidendiurea). N source effects on N uptake, and N leached (as % of N applied) were evaluated. Results show that the fertilizers which behaved best with regard to N uptake were FK followed by Triabon and AN. The most soluble fertilizers, AN and urea, gave the highest N leaching losses. Significant correlations between EUF-NI (rapidly soluble fraction) and leaching, as well as between EUF-N (I + II) and N uptake by the plant (where EUF-N II relates to the slowly soluble fraction) were obtained.

6 páginas, 3 figuras y 6 tablas estadísticas

Peer reviewed

Related Organizations

Spanish National Research Council
Spain

Keywords

Controlled reléase fertilizers, Nitrogen, Electroultrafiltration, Ryegrass

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