Pendleton No-till Wheat Experiment
This experiment has been added by the GLTEN Curators using existing published sources.
- Local identifier
- SF
- Years operational
- 1982—
- Objective
- To compare the effects of the traditional winter wheat-fallow system under CT with chemical fallow under NT on C sequestration and N requirements.
- Data Access Statement
- Don't know
- Data license
- Don't know
- Data policy
- Don't know
- Organization
- Columbia Basin Agricultural Research Center, University of Oregonexperimental research station
- People
Site: No-Till Wheat Plots
- Local code
- SF
- Location
- PendletonOregonUSA
- Geographic location
- 45.7183149570128, -118.623324329194
- Elevation
- 455 Metres
- Visits permitted?
- No
- History
- The site was cropped to wheat fallow with conventional tillage.
- Management
- The experiment area is under strict no-till management, with no tillage other than for seeding and stubble flailing. Herbicides are used to control weeds in both fallow and crop.
- 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: (1982—)
- Description
- An identical set of no-till plots was added immediately north of the present experiment in 1997 to compare crop and soil parameters during early stages of no-till adoption with that for a long-term no-till system and a moldboard plough system.
- Design description
- The experiment has 10 treatments replicated four times. Plots measure 2.4 x30.4m. The experiment is fully phased.
- Number of plots
- 40
- Number of replicates
- 3
- Number of harvests per year
- 1
- Crops
Crop Years grown spring wheat winter wheat fallow - Crop Rotations
- WW-SW 1982—1988
- 1winter wheat
- 2spring wheat
WW-F 1989—- 1winter wheat
- 2fallow
- Factors
- Factor name
- Factor levels
- nitrogen fertilizer exposure In 1994 N rates were adjusted down to align with those used in other long-term experiments.
control exposure (0 )
1983—N50 (56 kgN/ha)
1983—1993Application method: band applicationN100 (112 kgN/ha)
1983—1993Application method: band applicationN100b (112 kgN/ha)
1983—1993Application method: broadcast application methodN150 (168.1 kgN/ha)
1983—1993Application method: band applicationN40 (44.8 kgN/ha)
1994—Application method: band applicationN80 (89.7 kgN/ha)
1994—Application method: band applicationN120 (134.5 kgN/ha)
1994—Application method: band applicationN160 (179.3 kgN/ha)
1994—Application method: band application- crop residue burning process
Burn
1983—1989No burn
1983—1989- seeding date Replaced the burn/no burn treatment.
September
1990—1997Applied to crop: winter wheatOctober
1990—1997Applied to crop: winter wheat
- Measurement
Variable Material Units Frequency Scale Comment grain yield trait All crops
Related publications
- Project website
- S. Petrie 2001. 2001 PROGRESS REPORT LONG-TERM EXPERIMENTS: PENDLETON, OREGON