@article{Schneider-2019-Nutrient,
title = "Nutrient Loss in Snowmelt Runoff: Results from a Long‐term Study in a Dryland Cropping System",
author = "Schneider, Kimberley D. and
McConkey, B.G. and
Thiagarajan, Arumugam and
Elliott, J. M. and
Reid, Keith",
journal = "Journal of Environmental Quality, Volume 48, Issue 4",
volume = "48",
number = "4",
year = "2019",
publisher = "Wiley",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G19-36009",
doi = "10.2134/jeq2018.12.0448",
pages = "831--840",
abstract = "Snowmelt runoff often comprises the majority of annual runoff in the Canadian Prairies and a significant proportion of total nutrient loss from agricultural land to surface water. Our objective was to determine the effect of agroecosystem management on snowmelt runoff and nutrient losses from a long-term field experiment at Swift Current, SK. Runoff quantity, nutrient concentrations, and loads were estimated after a change in management from conventionally tilled wheat ( L.)-fallow (Conv W-F) to no-till wheat-fallow and subsequently no-till wheat-pulse (NT W-F/LP) and to an organic system with a wheat-green manure rotation (Org W-GM). The conversion from conventional tillage practices to no-till increased snowmelt runoff likely due to snow trapping by standing stubble after summer fallow. Relatedly, runoff after no-till summer fallow had higher dissolved P losses (0.07 kg P ha). Replacing summer fallow with a pulse crop in the no-till rotation decreased snowmelt runoff losses and nutrient concentrations. The Org W-GM treatment had the lowest P loss after stubble (0.02 kg P ha) but had high dissolved P concentrations in snowmelt following the green manure (0.55 mg P L), suggesting a contribution from incorporated crop residues. In this semiarid climate with little runoff, dissolved reactive P and NO-N loads in snowmelt runoff were smaller than those reported elsewhere on the prairies (averaging {\textless}0.05 kg P ha yr, and {\textless}0.2 kg NO-N ha yr); however, the nutrient concentrations we observed, in particular for P, even without P fertilizer addition for organic production, question the practicality of agricultural management systems in this region meeting water quality guidelines.",
}
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<abstract>Snowmelt runoff often comprises the majority of annual runoff in the Canadian Prairies and a significant proportion of total nutrient loss from agricultural land to surface water. Our objective was to determine the effect of agroecosystem management on snowmelt runoff and nutrient losses from a long-term field experiment at Swift Current, SK. Runoff quantity, nutrient concentrations, and loads were estimated after a change in management from conventionally tilled wheat ( L.)-fallow (Conv W-F) to no-till wheat-fallow and subsequently no-till wheat-pulse (NT W-F/LP) and to an organic system with a wheat-green manure rotation (Org W-GM). The conversion from conventional tillage practices to no-till increased snowmelt runoff likely due to snow trapping by standing stubble after summer fallow. Relatedly, runoff after no-till summer fallow had higher dissolved P losses (0.07 kg P ha). Replacing summer fallow with a pulse crop in the no-till rotation decreased snowmelt runoff losses and nutrient concentrations. The Org W-GM treatment had the lowest P loss after stubble (0.02 kg P ha) but had high dissolved P concentrations in snowmelt following the green manure (0.55 mg P L), suggesting a contribution from incorporated crop residues. In this semiarid climate with little runoff, dissolved reactive P and NO-N loads in snowmelt runoff were smaller than those reported elsewhere on the prairies (averaging \textless0.05 kg P ha yr, and \textless0.2 kg NO-N ha yr); however, the nutrient concentrations we observed, in particular for P, even without P fertilizer addition for organic production, question the practicality of agricultural management systems in this region meeting water quality guidelines.</abstract>
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%0 Journal Article
%T Nutrient Loss in Snowmelt Runoff: Results from a Long‐term Study in a Dryland Cropping System
%A Schneider, Kimberley D.
%A McConkey, B. G.
%A Thiagarajan, Arumugam
%A Elliott, J. M.
%A Reid, Keith
%J Journal of Environmental Quality, Volume 48, Issue 4
%D 2019
%V 48
%N 4
%I Wiley
%F Schneider-2019-Nutrient
%X Snowmelt runoff often comprises the majority of annual runoff in the Canadian Prairies and a significant proportion of total nutrient loss from agricultural land to surface water. Our objective was to determine the effect of agroecosystem management on snowmelt runoff and nutrient losses from a long-term field experiment at Swift Current, SK. Runoff quantity, nutrient concentrations, and loads were estimated after a change in management from conventionally tilled wheat ( L.)-fallow (Conv W-F) to no-till wheat-fallow and subsequently no-till wheat-pulse (NT W-F/LP) and to an organic system with a wheat-green manure rotation (Org W-GM). The conversion from conventional tillage practices to no-till increased snowmelt runoff likely due to snow trapping by standing stubble after summer fallow. Relatedly, runoff after no-till summer fallow had higher dissolved P losses (0.07 kg P ha). Replacing summer fallow with a pulse crop in the no-till rotation decreased snowmelt runoff losses and nutrient concentrations. The Org W-GM treatment had the lowest P loss after stubble (0.02 kg P ha) but had high dissolved P concentrations in snowmelt following the green manure (0.55 mg P L), suggesting a contribution from incorporated crop residues. In this semiarid climate with little runoff, dissolved reactive P and NO-N loads in snowmelt runoff were smaller than those reported elsewhere on the prairies (averaging \textless0.05 kg P ha yr, and \textless0.2 kg NO-N ha yr); however, the nutrient concentrations we observed, in particular for P, even without P fertilizer addition for organic production, question the practicality of agricultural management systems in this region meeting water quality guidelines.
%R 10.2134/jeq2018.12.0448
%U https://gwf-uwaterloo.github.io/gwf-publications/G19-36009
%U https://doi.org/10.2134/jeq2018.12.0448
%P 831-840
Markdown (Informal)
[Nutrient Loss in Snowmelt Runoff: Results from a Long‐term Study in a Dryland Cropping System](https://gwf-uwaterloo.github.io/gwf-publications/G19-36009) (Schneider et al., GWF 2019)
ACL
- Kimberley D. Schneider, B.G. McConkey, Arumugam Thiagarajan, J. M. Elliott, and Keith Reid. 2019. Nutrient Loss in Snowmelt Runoff: Results from a Long‐term Study in a Dryland Cropping System. Journal of Environmental Quality, Volume 48, Issue 4, 48(4):831–840.
