English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In open beef feedlot systems, more than 50% of dietary nitrogen (N) is lost as ammonia (NH 3 ). Here we report an effective and economically-viable method to mitigate NH 3  emissions by the application of lignite. We constructed two cattle pens (20 × 20 m) to determine the effectiveness of lignite in reducing NH 3  emissions. Twenty-four steers were fed identical commercial rations in each pen. The treatment pen surface was dressed with 4.5 kg m −2  lignite dry mass while no lignite was applied in the control pen. We measured volatilised NH 3  concentrations using Ecotech EC9842 NH 3  analysers in conjunction with a mass balance method to calculate NH 3  fluxes. Application of lignite decreased NH 3  loss from the pen by approximately 66%. The cumulative NH 3  losses were 6.26 and 2.13 kg N head −1  in the control and lignite treatment, respectively. In addition to the environmental benefits of reduced NH 3  losses, the value of retained N nutrient in the lignite treated manure is more than $37 AUD head −1  yr −1 , based on the current fertiliser cost and estimated cost of lignite application. We show that lignite application is a cost-effective method to reduce NH 3  loss from cattle feedlots.

A new cost-effective method to mitigate ammonia loss from intensive cattle feedlots: application of lignite