Effect of micro-irrigation type, N-source and mulching on nitrous oxide emissions in a semi-arid climate: An assessment across two years in a Merlot grape vineyard
- Fentabil, Mesfin M.
- Nichol, Craig F.
- Neilsen, Gerry H.
- Hannam, Kirsten D.
- Neilsen, Denise
- Forge, Tom A.
- Jones, Melanie D.
DOIAbstract
AbstractMicro-irrigation, fertigation, and mulching have been proposed to improve the nutrient and water-use efficiency of crop production. The effect of these management practices on the emission of nitrous oxide (N2O) from vineyards is not well understood and most prior studies were short-term (<1 year). To investigate longer-term effects, a study was conducted in grape (Vitus vinifera L. cv. Merlot planted in a sandy loam soil in British Columbia, Canada. The experiment was a factorial treatment design consisting of two micro-irrigation types (Drip or Micro-sprinkler), two nitrogen sources (surface applied Compost or fertigated Urea at a rate of 40kgNha−1), and two vineyard floor managements (bark Mulch or “Clean”—meaning bare soil). Fre...
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