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Can secondary metabolites of plantain reduce N losses from urine patches?
- Source :
- New Zealand Journal of Agricultural Research; Feb2023, Vol. 66 Issue 1, p83-100, 18p
- Publication Year :
- 2023
-
Abstract
- Plantain (Plantago lanceolata L.) is a forage that produces secondary metabolites with one, aucubin, known to inhibit soil nitrification. This study aimed to quantify the exudation of aucubin and catalpol by plantain root systems in a hydroponic experiment; evaluate the effect of aucubin on nitrogen (N) leaching and nitrous oxide (N<subscript>2</subscript>O) emissions from urine applied to plantain and ryegrass-white clover swards; and compare N losses from a ryegrass-white clover sward after urine from cows fed plantain and cows fed ryegrass-white clover was applied. Nitrate ( NO 3 − ) leaching and N<subscript>2</subscript>O losses were measured in a lysimeter experiment. Catalpol, but not aucubin, was exudated by plantain roots. N<subscript>2</subscript>O emissions were decreased by plantain swards and by ryegrass-white clover swards to which aucubin was also applied. Aucubin had no effect on NO 3 − leaching. Urine from cows grazing plantain had no effect on N<subscript>2</subscript>O emissions, and N leaching when compared to the urine from cows grazing ryegrass-white clover with the same N content. We conclude the plantain sward and the aucubin applied to the ryegrass-white clover sward decreased N<subscript>2</subscript>O emissions via mechanisms in the soil separate from the decreased emissions resulting from the lower N concentration of urine derived from cows grazing plantain. [ABSTRACT FROM AUTHOR]
- Subjects :
- METABOLITES
RYEGRASSES
URINE
NITROUS oxide
CLOVER
LEACHING
GRASSLAND soils
Subjects
Details
- Language :
- English
- ISSN :
- 00288233
- Volume :
- 66
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- New Zealand Journal of Agricultural Research
- Publication Type :
- Academic Journal
- Accession number :
- 161895131
- Full Text :
- https://doi.org/10.1080/00288233.2021.1991388