Permanent Topdressing Experiment

This experiment has been added by the GLTEN Curators using existing published sources.
Local identifier
Years operational
The PTDE was established in 1914 to identify the long term effects of fertiliser application on pasture and animal production.
The agro-ecological context of this site is a grazing system within a region of mixed farming at Rutherglen with an average 582 mm of annual rainfall. The site is located in north-eastern Victoria on the slopes of residual low hills and rises and surrounded by outwash slopes of the Riverine plains. These residual landforms are of older sedimentary origin and are separated from the Eastern Uplands.
Data Access Statement
Data license
Data policy
Don't know
Victoria State Government
funding agency

Site: Rutherglen Long-term Agro-ecological Site

Geographic location
-36.108849, 146.512177
© OpenStreetMap contributors
167 Metres
Visits permitted?
Soil description
The soil is a bleached eutrophic yellow Dermosol
Climate description
The average annual rainfall at the site is 590 mm with a winter dominated rainfall pattern.
Climate properties
VariableTime periodValue (range)Units
precipitation590 mm

Design period: Main period (1914—)

Design Type
Demonstration strip design
Despite some modifications to management, the three treatments have remain unchanged since 1914. Pasture production, soil chemistry, and livestock data have been collected to support the production of numerous journal papers. Soil data collected post-1990 adheres to the Australian Soil and Plant Analysis Council’s proficiency standards.
Design description
Since the PTDE site began in 1914, three treatments of phosphorus have been applied every second year to three paddocks. Each paddock is split in half to create six plots each of 0.5 hectares. There are two management options (hay cut, and pasture grazed) for each treatment of phosphorus. There is no replication of the demonstration plots. Other treatments such as: 125 kg single superphosphate per hectare plus 1.25 kg lime per hectare applied every fourth year; 125 kg basic phosphate per hectare; and 125 kg per hectare of superphosphate plus clover, have been applied in the past but were discontinued in 1979.
CropYears grown
native pastures
Factor name
Factor levels
superphosphate exposure
0  (0 )
125  (125 kg/ha)
Application frequency: every 2nd year
Application method: top dressing
Chemical form: single superphosphate
250  (250 kg/ha)
Application frequency: every 2nd year
Application method: top dressing
Chemical form: single superphosphate
management process
hay cut
pasture grazed
yield componentsNot specifiedPasture production
soil chemistryNot specified
livestock dataNot specified

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