Langgewens Long term crop rotation trials

Description
A long term trial with 8 4-year rotation cropping systems of which 4 are pure cash crop systems and 4 are cash crop/annual legume pasture systems, based on CA principles includes animal factor
Farm operation data?
Sample archive?
Samples available?
 
Data Access Statement
Available to collaborators only
Data license
No data license
Data policy
Yes (not online)
Organizations
Research and Technology Development Services, Western Cape Department of Agriculture
research organisation
Person
Dr Johann Strauss
principal investigator
Research and Technology Development Services, Western Cape Department of Agriculture
Directorate Plant Sciences

Site: Langgewans Old Trial

Type
research station field
Location
Moorreesburg
Swartland
South Africa
Geographic location
-33.27635, 18.70623
© OpenStreetMap contributors
Visits permitted?
No
Soil type
cambisol
Soil description
Haplic Cambisol (derived from SoilGrids API on lat long look-up). Soils derived from shales (Malmesbury and Kouebokkeveld shales)
Climatic type
temperate mediterranean climate
Climate properties
VariableTime periodValue (range)Units
air temperature18.2 (12.2 – 24.2) degree Celsius
precipitation380 millimeter

Design period: (1996—)

Description
The project consists of eight crop rotation systems, which include four cash crop and four cash crop/annual pasture rotation systems and is based on conservation agricultural practices of minimal soil disturbance, maximum soil cover and crop rotation. Plots measure 100 x 200 m
Number of plots
48
Number of replicates
2
Number of harvests per year
1
Crops
CropYears grown
wheat
rapeseed
lupins
Medicago sp
clover
Crop Rotations
W-W-W-W
  • 1
    wheat
  • 2
    wheat
  • 3
    wheat
  • 4
    wheat
C-W-W-W
  • 1
    rapeseed
    (Canola)
  • 2
    wheat
  • 3
    wheat
  • 4
    wheat
W-C-W-L
  • 1
    wheat
  • 2
    rapeseed
  • 3
    wheat
  • 4
    lupins
W-W-L-C
  • 1
    wheat
  • 2
    wheat
  • 3
    lupins
  • 4
    rapeseed
W-M-W-M
  • 1
    wheat
  • 2
    Medicago sp
  • 3
    wheat
  • 4
    Medicago sp
W-M/C-W-M/C
  • 1
    wheat
  • 2
    Medicago sp
    clover
  • 3
    wheat
  • 4
    Medicago sp
    -
W-M-C-M
  • 1
    wheat
  • 2
    Medicago sp
  • 3
    rapeseed
  • 4
    Medicago sp
W-M/C-W-M/C + s
  • 1
    wheat
  • 2
    Medicago sp
    clover
  • 3
    wheat
  • 4
    Medicago sp
    With saltbush pastures
    clover
Measurements
VariableMaterialUnitsFrequencyScaleComment
grain yield traitNot specifiedannual
grain quality traitsNot specifiedannual