Ndiaye Long-term Fertility Experiment
- Objective
- The objective is to assess long-term sustainability of intensive irrigated lowland rice in semi-arid condition. We have 6 treatments (different combinations and amounts of inorganic fertilisers) under double rice cropping per year.
- Description
- To assess long-term sustainability of intensive irrigated lowland rice in semi-arid condition
- Data Access Statement
- Available to any researcher on request
- Data license
- Don't know
- Data policy
- Yes (not online)
- Organization
- Africa Rice Centerresearch organisation
- People
- Kazuki Saitoprincipal investigatorAfrica Rice CenterIbnou Diengdata managerAfrica Rice Center
Site: Ndiaye
- Type
- research farm
- Location
- NdiayeSenegal
- Geographic location
- 16.182389, -16.247412
- Visits permitted?
- No
- Soil type
- gleysol
- Soil description
- The soil is constituted by deposits of marine origin resulting in a shallow saline ground water table of 20 dS m−1 or more (Ceuppens, 2000). The soil is an orthothionic Gleysol
- Soil properties
Variable Depth Value (range) Units Ref year Estimated? Baseline? clay content (40 – 54) Percent - Climatic type
- warm semi-arid climate
- Climate properties
Variable Time period Value (range) Units air temperature 25 (20 – 30) degree Celsius precipitation 200 millimeter
Design period: (1991—)
- Design Type
- Randomized complete block design
- Description
- Plots measure 5 x 5 m
- Design description
- N is tested with P only and with PK
- Number of plots
- 48
- Number of replicates
- 4
- Number of harvests per year
- 2
- Crop
Crop Years grown rice - Factors
- Factor name
- Factor levels
- nitrogen fertilizer exposure Plot application: Whole plot
control exposure (0 )
nitrogen (60 kgN/ha)
Chemical form: ureanitrogen (90 kgN/ha)
Chemical form: ureanitrogen (120 kgN/ha)
Chemical form: ureanitrogen (150 kgN/ha)
Chemical form: urea- cultivar Rice varietyPlot application: Sub plot
- potassium fertilizer exposure Plot application: Whole plot
potassium (50 kgK/ha)
Application method: fertilizer basal applicationChemical form: potassium chloridecontrol exposure (0 )
- phosphate fertilizer exposure Plot application: Whole plot
phosphorous (26 kgP/ha)
Application method: fertilizer basal applicationChemical form: calcium bis(dihydrogenphosphate)
- Measurement
Variable Material Units Frequency Scale Comment grain yield trait Not specified annual