Experiment 407: Wheat Grain Yield Response to Nitrogen, Phosphorus and Potassium Fertilization (Dryland)
This experiment has been added by the GLTEN Curators using existing published sources.
- Local identifier
- 407
- Years operational
- 1966—
- Objective
- To study winter wheat grain yield response to fertilization with nitrogen (N), phosphorus (P) and potassium (K) in a dryland system.
- Description
- This experiment is relevant in terms of sustainability and environmental risk.
- Data Access Statement
- Freely available online
- Data Access Notes
- Data is available for download as an Excel file, but no licence, DOI or citation recommendation is provided.
- Data license
- Don't know
- Data URL
- https://nue.okstate.edu/Long_Term_Experiments/E407_15.xlsx
- Data policy
- Don't know
- Organizations
- Oklahoma State Universityresearch organisationSouthwest Research and Extension Centerexperimental research station
- People
Site: Experiment #407 site
- Type
- research station field
- Location
- AltusOklahomaUSA
- Geographic location
- 34.590778, -99.33425
- Visits permitted?
- No
- Management
- All plots are managed using conventional tillage.
- Soil description
- Tillman-Hollister – fine, mixed thermic Pachic Paluestoll
Design period: (1966—)
- Design Type
- Randomized complete block design
- Design description
- The experiment has 6 replicates each of 12 plots. Plots measure 8.5 x 18.3 m
- Number of plots
- 6
- Number of replicates
- 72
- Crop
Crop Years grown winter wheat - Factors
- Factor name
- Factor levels
- nitrogen fertilizer exposure
N0 (0 )
N20 (22.4 kgN/ha)
Applied to crop: winter wheatN40 (44.8 kgN/ha)
Applied to crop: winter wheatN80 (89.7 kgN/ha)
Applied to crop: winter wheat- phosphate fertilizer exposure
P0 (0 )
P40 (44.8 kgP/ha)
Applied to crop: winter wheat- potassium fertilizer exposure
K0 (0 )
K40 (40 kgK/ha)
Applied to crop: winter wheat
- Factor combinations
- Treatment 1
- nitrogen fertilizer exposure: N0nitrogen fertilizer exposure: N0nitrogen fertilizer exposure: N0
- Treatment 2
- nitrogen fertilizer exposure: N20phosphate fertilizer exposure: P0potassium fertilizer exposure: K0
- Treatment 3
- nitrogen fertilizer exposure: N40phosphate fertilizer exposure: P0potassium fertilizer exposure: K0
- Treatment 4
- nitrogen fertilizer exposure: N80phosphate fertilizer exposure: P0potassium fertilizer exposure: K0
- Treatment 5
- nitrogen fertilizer exposure: N0phosphate fertilizer exposure: P40potassium fertilizer exposure: K0
- Treatment 6
- nitrogen fertilizer exposure: N20phosphate fertilizer exposure: P40potassium fertilizer exposure: K0
- Treatment 7
- nitrogen fertilizer exposure: N40phosphate fertilizer exposure: P40potassium fertilizer exposure: K0
- Treatment 8
- nitrogen fertilizer exposure: N80phosphate fertilizer exposure: P40potassium fertilizer exposure: K0
- Treatment 9
- nitrogen fertilizer exposure: N0phosphate fertilizer exposure: P40potassium fertilizer exposure: K40
- Treatment 10
- nitrogen fertilizer exposure: N20phosphate fertilizer exposure: P40potassium fertilizer exposure: K40
- Treatment 11
- nitrogen fertilizer exposure: N40phosphate fertilizer exposure: P40potassium fertilizer exposure: K40
- Treatment 12
- nitrogen fertilizer exposure: N80phosphate fertilizer exposure: P40potassium fertilizer exposure: K40
- Measurements
Variable Material Units Frequency Scale Comment grain yield trait winter wheat nitrogen content winter wheat In grain phosphorous content winter wheat In grain potassium content winter wheat In grain soil pH Soil soil organic carbon Soil total soil nitrogen Soil NDVI winter wheat agronomic fertilization date winter wheat harvest date winter wheat sowing date winter wheat
Related publications
- Project website