Nitrogen transformations after the spreading of pig slurry on bare soil and ryegrass using 15N-labelled ammonium (original) (raw)

European Journal of Agronomy, 1997

Abstract

A short field experiment (27 days) was carried out in summer 1995, to study the effect of an actively growing grass sward on nitrogen transformations of a pig slurry. The ammonium fraction of the slurry was labelled with (15NH4)2SO4. The slurry was spread manually on microplots in mid-June, at the rate of 3 l/m2, on a cut ryegrass sward, and

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