D2 Integrated Soil Fertility Management

Local identifier
D2 ISFM
Years operational
1986—2006
Description
ISFM (Integrated Soil Fertility Management) trial; Ibadan (Nigeria); started in 1986 and discontinued in 2006; control, Leucaena alley cropping, Senna alley cropping with and without fertilizer (6 treatments)
Farm operation data?
Sample archive?
Samples available?
 
Data Access Statement
Available to any researcher on request
Data license
No data license
Data policy
https://www.iita.org/wp-content/uploads/2018/01/IITA-DATA-AND-INFORMATION-MANAGEMENT-POLICY.pdf
Organization
IITA
research organisation
Person
Bernard Vanlauwe
principal investigator

Site: D2

Type
research farm
Location
Nigeria
Geographic location
7.55, 3.8978113
© OpenStreetMap contributors
Elevation
230 Metres
Slope
Visits permitted?
No
Soil type
lixisol
Soil description
Lixisol (following the latest version of the FAO classification)
Climatic type
tropical savanna climate
Climate properties
VariableTime periodValue (range)Units
air temperature26 degree Celsius
precipitation1300 millimeter

Design period: (1986—2006)

Design Type
Randomized complete block design
Description
Plots measure 10 x 18 m
Number of plots
30
Number of replicates
5
Number of harvests per year
2
Crops
CropYears grown
maize
cow peas
Factors
alley cropping
Each alley cropping plot contained 5 hedgerows and 4 alleys, 4.5 m wide and 10 m long
Plot application: Whole plot
no trees (control)
Leucaena leucocephala
A fast growing N fixing leguminous shrub
Senna siamea
A fast growing non-N fixing leguminous shrub
NPK fertilizer exposure
Plot application: Whole plot
control exposure  (0 )
With NPK
Measurement
VariableMaterialUnitsFrequencyScaleComment
grain yield traitNot specifiedannual