Ammonia loss from pasture : impact of the urease inhibitor NBPT. Murroon, Victoria, 2010 [Theme 1:Inhibitors for reducing emissions]

This data package describes a field trial conducted to
assess the influence of urea applied with and without a urease
inhibitors NBPT, and as a fine particle (FPA) or liquid
application (UAN) on loss of the indirect greenhouse gas ammonia
(NH3) from a ryegrass pasture (Lolium perenne L) in autumn and
spring of 2010. The trial was designed to assess both fertlizer
type and seasonal impacts on NH3 loss. Ammonia loss was measured
on 50 m diameter circles using a passive ammonia sampling system
of Leunig et al (1985) where NH3 was trapped in centrally
located acid traps. Data was collected on NH3 captured, soil
mineral and urea N, plant biomass production and nitrogen
content as well as local climatic conditions.