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
- PendletonOregonUSA
- Geographic location
- 45.7245522094149, -118.626271438954
- 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
Variable Time period Value (range) Units precipitation 420 millimeter air temperature 10 (-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
Crop Years grown winter wheat fallow - Crop Rotation
- W-F
- 1winter wheatOdd years
- 2fallowEven 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 wheatNot in use between 1963 and 1988N10 (11.2 kgN/ha)
1941—1952Application method: broadcast application methodChemical form: ammonium sulfateN30 (33.6 kgN/ha)
1953—1962Applied to crop: winter wheatApplication method: broadcast application methodChemical form: ammonium sulfateN40 (44.8 kgN/ha)
1963—1988Applied to crop: winter wheatApplication method: broadcast application methodChemical form: ammonium nitrateN40 (44.8 kgN/ha)
1989—Applied to crop: winter wheatApplication method: band applicationChemical form: urea ammonium nitrateN80 (89.7 kgN/ha)
1963—1988Applied to crop: winter wheatApplication method: broadcast application methodChemical form: ammonium nitrateN80 (89.7 kgN/ha)
1989—Applied to crop: winter wheatApplication method: band applicationChemical form: urea ammonium nitrateN120 (134.5 kgN/ha)
1963—1988Application method: broadcast application methodChemical form: ammonium nitrateN120 (134.5 kgN/ha)
1989—Applied to crop: winter wheatApplication method: band applicationChemical form: urea ammonium nitrateN160 (179.4 kgN/ha)
1963—1988Applied to crop: winter wheatApplication method: broadcast application methodChemical form: ammonium nitrateN160 (179.4 kgN/ha)
1989—Applied to crop: winter wheatApplication method: band applicationChemical form: urea ammonium nitrate
- Measurements
Variable Material Units Frequency Scale Comment grain yield trait winter wheat nitrogen content winter wheat In straw and grain
Related publications
- Project website
- S. Petrie 2001. 2001 PROGRESS REPORT LONG-TERM EXPERIMENTS: PENDLETON, OREGON
- Machado, S. (2011), Soil Organic Carbon Dynamics in the Pendleton Long-Term Experiments: Implications for Biofuel Production in Pacific Northwest. Agron. J., 103: 253-260.