The effect of small amounts of nitrate nitrogen on N.sub.2./sub.O emissions at two soils at overwintering area with different animal impact

Abstract

The objective of this study was to examine short term effect of nitrogen addition into soil on emissions of N.sub.2./sub.O in two soils of overwintering area differently affected by cattle (M and C soils). The nitrate-N amendment increased emissions of N.sub.2./sub.O from soils, and in all three experiments, this effect was more pronounced in soil at location M, characterized by higher intensity of cattle traffic, according to our hypothesis. Cumulative production of N.sub.2./sub.O was proportional to the amount of nitrogen added at both locations, but it was more affected by soil NO.sub.3./sub..sup.-./sup.-N content than by the amount of nitrate added