Item

Efficacy of aucubin as a nitrification inhibitor assessed in two Canterbury field trials

Gardiner, CA
Clough, Timothy
Cameron, Keith
Di, Hong
Edwards, GR
Date
2019-07-25
Type
Journal Article
Fields of Research
ANZSRC::3004 Crop and pasture production , ANZSRC::3108 Plant biology
Abstract
Ruminant urine patches are nitrous oxide (N₂O) emission hot-spots and compounds that inhibit nitrification in urine-affected soils, a key step in soil N₂O production, can significantly reduce N₂O emissions. Aucubin, a potential nitrification inhibitor found in plantain (Plantago lanceolata) was assessed in two field trials for its efficacy in reducing urine patch nitrate (NO₃⁻) accumulation and N₂O emissions. Plantain leaf extract or commercially derived pure aucubin was added to urine, alongside a control and urine only treatment, and applied to standard gas chambers and monitored for 35 days. While there were some daily differences between treatment soil nitrogen and N₂O emissions, there were no overall significant differences between cumulative N₂O emissions. Aucubin, applied as a one-off dose, seems to act as a nitrification inhibitor for a short period after application onto soil, but it’s inhibitory effects are not sufficient to produce significant reductions in overall urine patch N₂O emissions
Rights
© 2019 The Royal Society of New Zealand
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