Chertsey Establishment Trial

This experiment has been added by the GLTEN Curators using existing published sources.
Objective
To provide evidence that a progressive shift to a reduction in cultivation intensity would not penalize crop production under an intensive annual cropping rotation.
Description
The Chertsey Establishment Trial is also know as the Chertsey Long-term Cultivation Trial
Data Access Statement
Don't know
Data license
Don't know
Data policy
Don't know
Organization
Foundation for Arable Research
research organisation
People

Site: Chertsey Research Site

Type
research farm
Location
Chertsey
Canterbury
New Zealand
Geographic location
-43.7922955362862, 171.960673656259
© OpenStreetMap contributors
Visits permitted?
No
History
The site was previously farmed under a mixed cropping system using intensive cultivation for more than 20 years.
Management
Crop protection and nutrition inputs are the same across all treatments. Inputs are usually non-limiting.
Soil type
umbrisol
Soil description
Classified as a Chertsey Silt Loam under the New Zealand Soil Classification. 40-60cm top soil over gravels.
Climate properties
VariableTime periodValue (range)Units
precipitation660 millimeter

Design period: Original establishment treatments (2003—2017)

Design Type
Split-plot
Design description
Irrigation treatments make up the four main plots, with each plot split into 6 sub plots testing the 6 different establishment treatments.
Number of plots
4
Number of subplots
6
Number of replicates
2
Number of harvests per year
1
Crops
CropYears grown
Factors
Factor name
Factor levels
irrigation process
Irrigation treatments make up the four main plots.
deficit irrigation process
Irrigated treatments aim to remove soil moisture deficits and usually receive 250-300 mm of applied irrigation.
rainfed process
tillage process
Tests 6 different establishment methods on sub-plots
minimum tillage
Cultivation using 2 passes with a disc type cultivator operating in the surface layer.
minimum tillage
Cultivation using 2 passes with a disc type cultivator with rippers to remedy compaction.
no-till
2 sub-plots where the crop was sown with no prior cultivation using a disc drill.
no-till
2 sub-plots where the crop was sown with no prior cultivation using a cross-slot drill.
conventional tillage
Inversion plough followed by one pass with a disc type cultivator.
conventional tillage
Inversion plough followed by two passes with a disc type cultivator.
Measurements
VariableMaterialUnitsFrequencyScaleComment
yield traitNot specifiedannuallyGrain and seed yield measured annually
forage yieldNot specified

Design period: Revised establishment treatments (2017—)

Design Type
Split-plot
Design description
From September 2017, the size original cultivation treatments were reduced to three by combining the inversion, minimum and no-tillage treatments. This increased the number of replicates from 2 to 4 for each treatment
Number of plots
4
Number of subplots
6
Number of replicates
4
Number of harvests per year
1
Crops
CropYears grown
Factors
Factor name
Factor levels
irrigation process
deficit irrigation process
Irrigated treatments aim to remove soil moisture deficits and usually receive 250-300 mm of applied irrigation.
rainfed process
tillage process
minimum tillage
Two passes with a disc roller.
conventional tillage
Ploughed, maxi-tilled and Cambridge rolled.
no-till
No tillage.
Measurements
VariableMaterialUnitsFrequencyScaleComment
grain yield traitNot specifiedannually
seed yield traitNot specified

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