Agriculture and Agri-Food Canada Agriculture et Agroalimentaire Canada Canada Agriculture and Agri-Food Canada Agriculture et Agroalimentaire Canada Canada Performance of a Hydrolab, YSI and Horiba Multiprobes: A Preliminary Assessment T.L. Chow, G. Benoy and H.W. Rees Potato Research Centre, Agriculture and Agri-Food Canada, Fredericton, New Brunswick Real-Time Water Quality Monitoring Workshop 2007 St. John’s, Newfoundland and Labrador June 4-5, 2007 1
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Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
Canada
Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
Canada
Performance of a Hydrolab, YSI and Horiba Multiprobes:
A Preliminary AssessmentT.L. Chow, G. Benoy and H.W. Rees
Potato Research Centre, Agriculture and Agri-Food Canada,Fredericton, New Brunswick
Real-Time Water Quality Monitoring Workshop 2007St. John’s, Newfoundland and Labrador
June 4-5, 2007
1
Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
Canada
Water Quality Problems related to Agricultural ActivitiesPresent Monitoring ProceduresFeasibility of Replacing the Auto-sampling/Lab analyses with MultiprobesPreliminary Results and Conclusions
Outline
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Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
Canada
20,000 ha of potato grown annually in New Brunswick
30-40 % of total provincial farm cash receipts
Value added products
Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
Canada
Shallow SoilsSloping Topography
Major Rain Storms Intensive Management
SOIL EROSION
Pollution
Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
Canada
Surface Water Contamination
Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
Canada
• Rainfall simulator plots (1m x 1m);• Permanent runoff-erosion plots (10m x
30m);• Paired drainage basins (2-5 ha);• Other field scale experiments (Buffer strip,
Nutriment management, etc.)
• Experimental watersheds (15 and 340 km2)
20+ Years of Soil Erosion Research inPotato Production in New Brunswick
Off-farm
On-farm
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Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
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• Impacts of intensive potato production on:– Runoff and soil erosion– Soil quality in terms of productivity– Water quality in terms of discharge, sediment and nutrient
loading
• Beneficial Management Practices on:– Runoff and soil losses– Soil quality– Water quality
General Scope of Research:
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Agriculture andAgri-Food Canada
Agriculture etAgroalimentaire Canada
Canada
Environment CanadaNB Department of Agriculture, Fisheries and AquacultureNB Department of Environment and Local Government Eastern Canada Soil and Water Conservation CentreUniversity of New Brunswick (biology, engineering, forestry)Various farm agencies and associations
Potatoes New BrunswickNB Soil and Crop Improvement Association
To evaluate the performance of a HYDROLAB, YSI and HORIBA multiprobe for real time water quality monitoring; and To study the feasibility of replacing auto-sampling/Lab-analysis with the multiprobes.
Objectives
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Methodology
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Tem X X X pH X X XDO X XCONDUCT X X XTURBIDITY X X XDEPTH X X ORP X X XTDS X X XNITRATE X X X AMMONIA X X XPOTASSIUM XCHLORIDE XCOST 16.1K 12.6K 9.0K
PARAMETER HYDROLAB YSI HORIBA
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Methodology
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Results and Discussion
4
8
12
16
Wat
er T
empe
ratu
r e (o C
)
0.0
0.1
0.2
0.3
Flow
Vel
(m3 /S
)
250 260 270 280 290Julian Date 2006
Hydrolab YSI Horiba CS1077.6
8.0
8.4
8.8
9.2
9.6
pH
0.0
0.1
0.2
0.3
Flow
Vel
(m3 /S
)
250 260 270 280 290Julian Date 2006
Hydrolab YSI Horiba Lab
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Results and Discussion
-40-30-20-10
010203040
Sta
ge H
eigh
t (cm
)
048
121620
Dai
ly R
ain f
all (
mm
)
250 260 270 280 290Julian Date 2006
Hydrolab Horiba Lab
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Results and Discussion
200
400
600
800
Con
duct
ivit y
(uS/
cm)
0.0
0.1
0.2
0.3
Flow
Vel
(m3 /S
)
250 260 270 280 290Julian Date 2006
Hydrolab YSI Horiba Lab
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Results and Discussion
0.1
0.2
0.3
0.4
TDS
(g/l)
0.0
0.1
0.2
0.3
Flow
Ve l
(m3 /S
)
250 260 270 280 290Julian Date 2006
Hydrolab YSI Horiba
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Results and Discussion
0
400
800
1200
1600
2000
Turb
idit y
(NT U
)
0.0
0.1
0.2
0.3
Flow
Vel
(m3 /S
)
0.0
0.2
0.4
0.6
0.8
1.0
Sus
pend
ed s
e dim
ent (
g/l)
250 260 270 280 290Julian Date 2006
Hydrolab YSI Horiba Lab
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Results and Discussion
0
10
20
30
40
50
NO
3-N (m
g/l)
0.0
0.1
0.2
0.3
Flow
Vel
(m3 / S
)
250 260 270 280 290Julian Date 2006
Hydrolab YSI Horiba Lab
Agriculture andAgri-Food Canada
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Results and Discussion
0
2
4
6
8
10
NH
4-N (m
g/l)
0.0
0.1
0.2
0.3
Flow
Vel
(m3 / S
)
250 260 270 280 290Julian Date 2006
Hydrolab YSI Horiba
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Results and Discussion
75 80 85 90 95
100 105
DO
(% s
atur
atio
n)
2 4 6 8 10 12 14 16
250 260 270 280 290 Julian Date 2006
DO Water Tem (C)
YSI
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Results and Discussion
2 4 6 8
10 12 14 16
250 260 270 280 290 Julian Date 2006
DO (mg/l) Water Tem (C)
Horiba
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Results and Discussion
5 10 15 20 25 30 35
Cl (
mg/
l)
250 260 270 280 290 Julian Date 2006
Hydrolab
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Preliminary Conclusions• Water temperature, pH and specific conductivity compared
favorably between sondes; • Water temperature and conductivity monitored with sondes
followed similar trend of the auto-sampling/lab-analysis results;• Sondes failed to monitor small change in stage heights and may be
attributed to barometric pressure changes;• Turbidity monitored with sondes failed to reflect changes in
suspended sediment concentration;• Hydrolab and YSI seem to track nitrate and ammonia reasonably
well, but with concentration higher than the lab data;• Not recommend to replace the lab method with the sondes until