Pendleton Tillage-Fertility Experiment

This experiment has been added by the GLTEN Curators using existing published sources.
Local identifier
TF
Years operational
1940—
Objective
To evaluates tillage and nitrogen treatments on crop and soil productivity under the wheat-fallow cropping system
Description
The experiment is not fully phased, with crops grown and yields obtained in odd years. The plots are fallow in even years.
Data Access Statement
Don't know
Data license
Don't know
Data policy
Don't know
Organization
Columbia Basin Agricultural Research Center, University of Oregon
People

Site: Tillage-Rotation plots

Local code
TF
Location
Pendleton
Oregon
USA
Geographic location
45.7245522094149, -118.626271438954
© OpenStreetMap contributors
Elevation
455 Metres
Visits permitted?
No
Soil description
Soils are coarse silty mixed mesic Typic Haploxerolls
Climate description
The climate is semi-arid, but partially influenced by maritime winds from the Pacific Ocean. Winters are cool and wet, and summers are hot and dry
Climate properties
VariableTime periodValue (range)Units
precipitation420 millimeter
air temperature10 (-1 – 21) degree Celsius

Design period: (1940—)

Design description
The experiment has a randomized block split-plot design. Main plots test three different tillage systems and sup plots test six different nitrogen levels. Plots measure 5.5 x 40.2m. The nitrogen rate has been modified 3 times during the experiment's history
Number of plots
9
Number of subplots
54
Number of replicates
3
Number of harvests per year
1
Crops
CropYears grown
winter wheat
fallow
Crop Rotation
W-F
  • 1
    winter wheat
    Odd years
  • 2
    fallow
    Even years
Factors
Factor name
Factor levels
tillage process
mouldboard plough  (25 cm depth)
Tillage depth 23 cm. Average residue cover at seeding: 7%
offset disc harrows  (15 cm depth)
Tillage depth 15 cm. Average residue cover at seeding: 34%
sweep (duck foot) cultivator  (23 cm depth)
Tillage depth 23 cm. Average residue cover at seeding: 43%
nitrogen fertilizer exposure
N is applied 7-14 days before seeding.
chemical pest control process  (0 )
Applied to crop: winter wheat
Not in use between 1963 and 1988
N10  (11.2 kgN/ha)
1941—1952
Application method: broadcast application method
Chemical form: ammonium sulfate
N30  (33.6 kgN/ha)
1953—1962
Applied to crop: winter wheat
Application method: broadcast application method
Chemical form: ammonium sulfate
N40  (44.8 kgN/ha)
1963—1988
Applied to crop: winter wheat
Application method: broadcast application method
Chemical form: ammonium nitrate
N40  (44.8 kgN/ha)
1989—
Applied to crop: winter wheat
Application method: band application
Chemical form: urea ammonium nitrate
N80  (89.7 kgN/ha)
1963—1988
Applied to crop: winter wheat
Application method: broadcast application method
Chemical form: ammonium nitrate
N80  (89.7 kgN/ha)
1989—
Applied to crop: winter wheat
Application method: band application
Chemical form: urea ammonium nitrate
N120  (134.5 kgN/ha)
1963—1988
Application method: broadcast application method
Chemical form: ammonium nitrate
N120  (134.5 kgN/ha)
1989—
Applied to crop: winter wheat
Application method: band application
Chemical form: urea ammonium nitrate
N160  (179.4 kgN/ha)
1963—1988
Applied to crop: winter wheat
Application method: broadcast application method
Chemical form: ammonium nitrate
N160  (179.4 kgN/ha)
1989—
Applied to crop: winter wheat
Application method: band application
Chemical form: urea ammonium nitrate
Measurements
VariableMaterialUnitsFrequencyScaleComment
grain yield traitwinter wheat
nitrogen contentwinter wheatIn straw and grain

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