Počet záznamů: 1

N.sub.2./sub.O emissions from low and moderately disturbed pasture soils - field tests of minimal and maximal N supply

  1. 1.
    0328567 - BC-A 2010 RIV NL eng J - Článek v odborném periodiku
    Hynšt, Jaroslav - Šimek, Miloslav
    N2O emissions from low and moderately disturbed pasture soils - field tests of minimal and maximal N supply.
    Plant and Soil. Roč. 320, 1-2 (2009), s. 195-207 ISSN 0032-079X
    Grant CEP: GA ČR GA526/04/0325; GA AV ČR IAA600660605; GA MŠk LC06066
    Výzkumný záměr: CEZ:AV0Z60660521
    Klíčová slova: nitrogen fertilization * grassland * cattle disturbance level
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 2.517, rok: 2009

    Rates and patterns of nitrogen transformation differ in divergently managed pasture soils. In pastures with low nutrient inputs, N is utilized efficiently and it is assimilated by plants and soil microorganisms for synthesis of biomass. In more intensive pastures, characterized with higher N inputs, significant amounts of N can be lost from the ecosystem in various forms. Two soils of a cattle overwintering area with different levels of cattle disturbance were supplied with a solution of KNO3 in various levels corresponding in range to 0-500 kg N ha-1 Emissions of N2O were measured during 24 h after a NO3--N application. We hypothesized that under a low disturbance small additions of up to 5 kg NO3--N are used by plants and soil microbes without an increase in N2O emissions, while a pasture adapted to a moderate disturbance will increase N2O emissions.
    Trvalý link: http://hdl.handle.net/11104/0174857