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Title

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

AuthorsVallejo, A.; Cartagena, Maria C.; Rodríguez, D.; Díez López, José Antonio
KeywordsControlled reléase fertilizers
Electroultrafiltration
Nitrogen
Ryegrass
Issue Date1993
PublisherSpringer
CitationFertilizer Research 34: 121-126 (1993)
AbstractThe 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.
Description6 páginas, 3 figuras y 6 tablas estadísticas
URIhttp://hdl.handle.net/10261/82308
ISSN0167-1731
Appears in Collections:(ICA) Artículos
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