Crop | Years Grown |
---|---|
Spring Barley | 1852 - |
Factors are the interventions or treatments which vary across the experiment.
Description: nitrogen fertilizer in various forms applied annually
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Ammonium Sulphate (series A) | 48 kgN/ha | 1852 - 1966 | annually | spring barley | ammonium sulfate | Applied in the spring. | |
Sodium Nitrate (series Aa) Plots 1aa-4aa | 48 kgN/ha | 1852 - 1966 | annually | spring barley | sodium sulphate | Applied in spring. | |
Castor Meal (series C) Plots 1c-4c | 48 kgN/ha | 1852 - 1967 | annually | spring barley | Castor bean meal since 1941, rape cake 1852-1940. | ||
No Nitrogen (series O) Plots 1o-4o | 0 kgN/ha | 1852 - 1967 | spring barley |
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
P | 35 kgP/ha | 1852 - 1966 | annually | spring barley | triple superphosphate | applied in the spring |
Description: inorganic potassium fertilizer applied, along with 11kgMg and 16kgNa fertilizer
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Knamg | 90 kgK/ha | 1852 - 1966 | annually | spring barley | potassium sulphate | Applied in the spring, along with 16kgNa/ha as sodium sulphate and 11kgMg/ha as magnesium sulphate |
Description: Annual applicaton of cattle farmyard manure (FYM)
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Fym Strip 72 | 35 t/ha | 1852 - 1967 | annuallty | spring barley | Applied before ploughing usually in the autumn | ||
Fym-residue Strip 71 | 35 t/ha | 1852 - 1871 | annually | spring barley | Applied before ploughing usually in the autumn for 20 years only | ||
None Strip 61 | 0 t/ha | 1852 - 1967 | spring barley | No FYM or inorganic fertilizer applied | |||
Ashes Strip 62 | 1852 - 1932 | spring barley | Ashes were added to inorganic P, KNaMg fertilizers to aid spreading. This is a test of the ashes alone. Not applied 1928, 1929. |
Description: Series AA 4 large plots divided into 8 sub-plots testing silicate (AA and AAS) from 1862
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Silicate Aas | 450 kg/ha | 1862 - 1967 | annually | spring barley | sodium silicate | Silicate test on Series AA only 450 kg/ha calcium silicate and sodium silicate 1862-1867. | |
No Silicate Aa | 0 kg/ha | 1862 - 1967 | spring barley | Silicate test on Series AA only |
Description: No P, K, Na or Mg applied since 1852. Strip 1
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|
Variable | Unit | Collection Frequency |
Material | Description | Crop |
---|---|---|---|---|---|
Yield Components | t/ha | annually | SpecifiedCrop | Grain and straw yields at field moisture content, approximately 85% dry matter. | spring barley |
Soil Organic Carbon | t/ha | occasionally | Soil | Topsoil (0-23cm) from soil sampled in 1852, 1882, 1913, 1946 and 1965. | |
Soil Total Nitrogen | % | occasionally | Soil | Topsoil (0-23cm) from soil sampled in 1852, 1882, 1913, 1946 and 1965. | |
Soil Bulk Density | g/cm3 | occasionally | Topsoil (0-23cm) from soil sampled in 1852, 1882, 1913, 1946 and 1965. |
Crop | Years Grown |
---|---|
Spring Barley | |
Potatoes | |
Field Beans |
Rotation | Crops |
---|---|
Series C rotation (1968 - 1978) | Spring Barley > Field Beans > Potatoes |
Series AA rotation (1968 - 1978) | Spring Barley > Field Beans > Potatoes |
Factors are the interventions or treatments which vary across the experiment.
Description: Inorganic nitrogen fertilizer in various amounts applied annually to split plots on the rotation plots.
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
N0 | 0 | 1968 - 1978 | Nil treatment | ||||
N1 | 48 kgN/ha | 1968 - 1978 | annually | ammonium nitrate | Applied in the spring | ||
N2 | 96 kgN/ha | 1968 - 1978 | annually | ammonium nitrate | Applied in the spring | ||
N3 | 144 kgN/ha | 1968 - 1978 | ammonium nitrate | Applied in the spring |
Description: phosphate fertilizer applied annually
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
P | 34 kgP/ha | 1968 - 1978 | triple superphosphate | Applied before ploughing usually in the autumn |
Description: inorganic potassium fertilizer applied annually, along with 11kgMg and 16kgNa fertilizer
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Knamg | 90 kgK/ha | 1968 - 1978 | annually | potassium sulphate | Applied before ploughing, usually in the autumn, with 11kgMg and 16kgNa fertilizer |
Variable | Unit | Collection Frequency |
Material | Description | Crop |
---|---|---|---|---|---|
Yield Components | t/ha | annually | AllCrops | grain and straw yields at 85% dry matter | |
Crop Nutrient Data | % | annually | SpecifiedCrop | Grain and straw %N, P, K, Ca, Mg and Na since 1970. | spring barley |
Thousand Grain Weight | g | annually | selected plots only from 1974 onwards | ||
Soil Organic Carbon | % | Soil | 1975 selected plots | ||
Soil Total Nitrogen | % | Soil | 1975 selected plots | ||
Soil Bulk Density | g/cm3 | Soil | 1975 selected plots |
Crop | Years Grown |
---|---|
Spring Barley |
Factors are the interventions or treatments which vary across the experiment.
Description: Inorganic nitrogen fertilizer in various amounts applied annually to split plots
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
N0 | 0 kgN/ha | - | spring barley | SInce 1981 the N rates rotate annually, N3>N2>N1>N0 | |||
N1 | 48 kgN/ha | 1968 - | annually | spring barley | calcium ammonium nitrate | Applied in spring. SInce 1981 the N rates rotate annually, N3>N2>N1>N0 | |
N2 | 96 kgN/ha | 1968 - | annually | spring barley | calcium ammonium nitrate | Applied in spring. SInce 1981 the N rates rotate annually, N3>N2>N1>N0 | |
N3 | 144 kgN/ha | 1968 - | spring barley | calcium ammonium nitrate | Applied in spring. SInce 1981 the N rates rotate annually, N3>N2>N1>N0 |
Description: inorganic phosphorus fertilizer applied annually since 1852
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
P | 35 kgP/ha | 1852 - 2002 | annually | spring barley | triple superphosphate | Applied in autumn before ploughing. |
Description: Inorganic potassium fertilizer applied annually since 1852, with inorganic Mg.
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Kmg | 90 kgK/ha | 1852 - | annually | spring barley | potassium sulphate | Applied before ploughing in autumn. Applied annually since 1852 with 35kgMg as Kieserite every three years. 16kgNa/ha applied annually as sodium sulphate until 1978. |
Description: farmyard manure in various amounts and periods of application
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Fym Strip 72 | 35 t/ha | 1852 - | annually | spring barley | Applied before ploughing in autumn. Continuation of FYM treatment from early and middle period. | ||
Fym-residue Strip 71 | 35 t/ha | 1852 - 1871 | annually | spring barley | Continuation of FYM-residue treatment from early and middle period. | ||
None Strip 61 | 0 t/ha | - | spring barley | No FYM applied. Continuation of Early and Middle Period treatment. | |||
Ash Strip 62 | 1852 - 1932 | spring barley | Continuation of treatment from Early and Middle period. |
Description: Inorganic silicate fertilizer in various amounts and periods of previous application
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Si, Series Aa | 450 kg/ha | 1980 - | sodium silicate | Applied before ploughing in the autumn. | |||
(si), Series Aa | 450 kg/ha | 1862 - 1979 | sodium silicate | Applied before ploughing in autumn |
Variable | Unit | Collection Frequency |
Material | Description | Crop |
---|---|---|---|---|---|
Yield Components | t/ha | annually | SpecifiedCrop | Grain and straw yields at 85% dry matter. | spring barley |
Crop Nutrient Content | % | annually | SpecifiedCrop | Grain and straw %N, P, K, Ca, Mg and Na since 1979, %S since 1996, from main plots only. | spring barley |
Thousand Grain Weight | g | annually | SpecifiedCrop | selected plots only from 1974 onwards | spring barley |
Soil Organic Carbon | % | infrequently | Soil | 1982, 1998, 2000 on selected plots only. 0-23cm. Some subsoil data also available in 2000. | |
Total Soil Nitrogen | % | infreqently | Soil | 1982, 1998, 2000 on selected plots only. 0-23cm. Some subsoil data also available in 2000. | |
Plant Available Phosphorous | mg/kg | infreqently | Soil | 1982, 1998, 2000 on selected plots only. 0-23cm. Some subsoil data also available in 2000. | |
Soil pH | infreqently | Soil | 1982, 1998, 2008 on selected plots only. 0-23cm. Some subsoil data in 1998. | ||
Exchangeable Cations | infreqently | Soil | Exchangeable Ca, Mg, K, and Na, 1982 and 2000, selected plots. 0-23cm soil layer. |
Variable | Value | Reference Year | Is Estimated | Is Baseline |
---|---|---|---|---|
Clay content | 20% (Percent) | NO | NO | |
Silt content | 52% (Percent) | NO | NO | |
Sand content | 28% (Percent) | NO | NO |
Title (hover for a longer description) | Year of Publication | Type | DOI or Link | Version |
---|---|---|---|---|
Crop yield data | ||||
Hoosfield mean long-term spring barley yields 1852-2015 | 2017 | OA | 10.23637/KeyRefOAHByields | 01 |
Soil data | ||||
Hoosfield soil organic carbon content | 2012 | OA | 10.23637/KeyRefOAHBsoc | 01 |
2015
2012
2009
2001
1997
1996
For further information and assistance, please contact the e-RA curators, Sarah Perryman and Margaret Glendining using the e-RA email address: era@rothamsted.ac.uk