Long term crop sequences and tillage systems experiments

Description
Long-term experiments of crop sequences, tillage systems and nitrogen fertilizations were carried out at Pergamino.
Farm operation data?
Sample archive?
Samples available?
 
Data Access Statement
Available to collaborators only
Data license
Don't know
Data policy
No
Organization
Instituto Nacional de Tecnología Agropecuaria
research organisation
Person
Alicia Irizar
principal investigator

Site: Pergamino

Type
research station field
Location
Pergamino Partido
Buenos Aires Province
Argentina
Geographic location
-33.95, -60.55
© OpenStreetMap contributors
Elevation
67 Metres
Visits permitted?
No
Management
Maize, wheat and soybean were fertilized with 12 kg P ha-1.
Soil type
chernozem
Soil description
The soil is a fine, illitic, thermic Typic Argiudoll (US Soil Taxonomy) of the Pergamino Series, without water erosion phases (soil slope < 0.3%)
Soil properties
VariableDepthValue (range)UnitsRef yearEstimated?Baseline?
clay content Metres23 Percent
silt content Metres64 Percent
Climatic type
temperate oceanic climate
Climate properties
VariableTime periodValue (range)Units
air temperature16.6 (10.2 – 23) degree Celsius
precipitation988 (498 – 1478) millimeter

Design period: (1979—)

Design Type
Split-plot
Design description
The maize-double cropped wheat/soybean sequences (three crops in two years) which began in 1979, the double cropped wheat/soybean which started in 1983, and the maize and soybean monocultures which were added in 1987. Each experiment presented a completely randomized block design. The main plot was 45 m long by 14 m wide, and the tillage systems were randomized in the main plots. The tillage systems were moldboard plow, chisel plow and no tillage in all rotations.
Number of plots
48
Number of subplots
96
Number of replicates
2
Number of harvests per year
2
Crops
CropYears grown
maize
wheat
soybeans
Crop Rotations
maize monocrop  1987—
  • 1
    maize
soybeans monocrop  1987—
  • 1
    soybeans
wheat soybean rotation  1983—
  • 1
    soybeans
  • 2
    wheat
maize double-cropped wheat/soybeans  1979—
  • 1
    maize
  • 2
    wheat
    soybeans
Factors
tillage process
mouldboard plough
no-till
chisel plough
nitrogen fertilizer exposure
The main plots were divided into two subplots of 7 m width and 45 m long, in which two doses of nitrogen fertilizer were applied
Plot application: Sub plot
control exposure  (0 )
nitrogen  (90 kgN/ha)
Applied to crop: wheat
nitrogen  (100 kgN/ha)
Applied to crop: maize
Measurement
VariableMaterialUnitsFrequencyScaleComment
grain yield traitNot specifiedannual