Thyrow Endurance Field Experiments: Fertilization and irrigation experiment "Intensity Test"

This experiment has been added by the GLTEN Curators using existing published sources.
Local identifier
Thy_D1
Years operational
1937—
Objective
Influence of irrigation and mineral N-fertilization on biomass production and C/N turnover in the soil-plant system
Description
The experiment was created in 1937 as a long plot experiment with four fertilization stages (nitrogen in combination with organic fertilization) under the name "intensity test". It is one of four Endurance field tests in Thyrow, Germany. In 1969, irrigation was introduced as a test factor for the current "fertilization and irrigation experiment" while at the same time increasing nitrogen fertilization and adapting crop rotation to the irrigation application. This approach should provide insights into how increased biomass production and turnover as a result of irrigation and intensive N supply affect soil organic matter content and whether a stronger supply of organic matter to the soil must take place under these conditions. From 1995, the experiment was adapted to the changed framework conditions of crop production. The low-yielding fruit species Welsh ryegrass, fodder beet and spring barley were replaced by the crops Knaulgras, linseed and öllein (since 1999) and winter rye, which were better adapted to the location, a reduction in N fertilization, an N0 stage and a second straw fertilization was introduced. In recent years, the fruit species have been adapted again, in 2008 the öllein was replaced by winter rapeseed and in 2010 the winter barley by winter wheat.
Data Access Statement
Don't know
Data license
Don't know
Data policy
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Organization
Humboldt University Berlin
People

Site: Fertilisation and irrigation test

Type
research station field
Local code
Thy_D1
Location
Thyrow
Germany
Geographic location
52.1508, 13.1408
© OpenStreetMap contributors
Visits permitted?
No
Soil type
luvisol
Soil description
Albic Luvisol
Soil properties
VariableDepthValue (range)UnitsRef yearEstimated?Baseline?
sand content 83.1 Percent
silt content 16.2 Percent
clay content 2.7 Percent
soil pH (5.5 – 8)

Design period: Current design (1969—)

Description
Irrigation was introduced as a test factor while at the same time increasing nitrogen fertilization and adapting crop rotation to the irrigation application. P at 17.5 kg per ha K at 100 kg per ha
Design description
Number of test elements: 5x2x4 = 40 (+10 standards) Number of repetitions: 3 Number of cuts: 120+30 (for standards) = 150 Test facility: long parcel standard system
Number of plots
40
Crops
CropYears grown
potatoes
winter wheat
winter rapeseed
winter rye
knuckle grass
Crop Rotation
Unnamed
  • 1
    knuckle grass
  • 2
    potatoes
  • 3
    winter wheat
  • 4
    winter rapeseed
  • 5
    winter rye
Factors
Factor name
Factor levels
Irrigation
with sprinkling
without irrigation
nitrogen fertilizer exposure
N 0 +  (0 kgN/ha)
No N applied, straw fertilization only
N 30 +  (30 kgN/ha)
30 kg N per ha applied, with straw fertilization
N 50 +  (50 kgN/ha)
50 kg N per ha applied, with straw fertilization
N 60 +  (60 kgN/ha)
60 kg N per ha applied, with straw fertilization
N 120 +  (120 kgN/ha)
120 kg N per ha applied with straw fertilization
N 50 -  (50 kgN/ha)
50 kg N per ha applied, without straw
N 60 -  (60 kgN/ha)
60 kg N per ha applied, without straw
N 120 -  (120 kgN/ha)
120 kg N per ha applied, without straw
Measurements
VariableMaterialUnitsFrequencyScaleComment
Growth and development ratingNot specified
yield componentsNot specified
soil organic carbonNot specified

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