Saxmundham II

Local identifier
S/RN/2
Years operational
1899—1986 (Establishment period end: 1968)
Objective
To investigate the effects of soil P and fresh fertilizer P on the yields of arable crops at a range of soil P values.
Description
The experiment consists of 8 Main Strips (originally 10). Between 1899 and 1968 various combinations of FYM and P fertilizer applied to these Main Strips resulted a wide range of Olsen P values (4 – 65 mg/kg Olsen P). By 1969 the eight strips were divided into four blocks (A, B, C and D) with 20 micro-plots in each strip. On each set of micro-plots within each Strip/Block five amounts of P fertilizer were tested on potatoes, sugar beet, spring barley and winter wheat). Yields and P uptake were measured and Soil Olsen P content.
Farm operation data?
Sample archive?
Samples available?
 
Data Access Statement
No data statement
Data license
CC BY
Data policy
Yes (not online)
Organization
Rothamsted Research
research organisation
People
Dr Andrew Macdonald
principal investigator
Rothamsted Research
SAS
Paul Poulton
principal investigator
Rothamsted Research
SAS
Dr Margaret Glendining
data manager
Rothamsted Research
CAS

Site: Saxmundham II

Type
research station field
Location
Saxmundham
Suffolk
UK
Geographic location
52.221, 1.466
© OpenStreetMap contributors
Elevation
37 Metres
Visits permitted?
No
Visiting arrangements
None
History
Rothamsted relinquished the site in 2010
Management
The site is no longer managed as an experimental site.
Soil type
Eutric Gleysol
Soil description
Sandy clay loam developed in drift over Chalky boulder clay, Beccles Series

Design period: Final period (1969—1986)

Description
4 blocks (A, B, C, D) each containing 8 main strips (1-8), each divided into 5 micro-plots (01-20).
Number of blocks
4
Number of plots
8
Number of subplots
5
Number of replicates
4
Number of harvests per year
1
Crops
CropYears grown
potatoes 1969—1974
sugarbeet 1969—1974
winter wheat 1977—1986
barley 1970—1979
Measurement
VariableMaterialUnitsFrequencyScaleComment
plant available phosphorousSoilmg/kgAnnual0-23cmOlsen P

Design period: Early period (1899—1964)

Description
Started by the Education Committee of East Suffolk County Council, to determine how farmyard manure (FYM) and/or inorganic fertilizer (N and P) could best be distributed to crops in a four-course rotation.
Design description
Four large blocks each comprising 10 treatment strips. The treatments were applied once every four years. In 1952 two-thirds of the experiment was stopped, although one strip on two blocks we re-incorporated into the experiment later.
Number of blocks
4
Number of plots
10
Number of replicates
4
Number of harvests per year
1
Crops
CropYears grown

Design period: Middle period (1965—1968)

Description
Rothamsted took over the site in 1964 and modified the experiment. Additional FYM and P was applied to extend the range of P residues prior to testing the value of fresh and residual P on sub-plots within the main treatment strips. Strip 8, which had not received any treatment since 1952 was re-incorporated into the experiment.
Number of plots
8
Number of harvests per year
1
Crops
CropYears grown

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