Crop | Years Grown |
---|---|
Spring Beans | 1962 - 1964 |
Spring Barley | 1965 - 1967 |
Potatoes | 1968 - |
Fallow | 1969 - |
Spring Oats | 1975 - |
Spring Rapeseed | 1976 - |
Factors are the interventions or treatments which vary across the experiment.
Description: Four rates of lime: control, low, medium and high. Applied in 1962, 1963 and 1978. Amounts given are the total amounts applied, see comments for splits.
Application: Whole Plot
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 t/ha | 1962 - 1980 | |||||
Lime Low | 7 t/ha | 1962 - 1980 | twice | 5 t/ha in 1962, 2 t/ha in 1978 | |||
Lime Medium | 15 t/ha | 1962 - 1980 | twice | 10 t/ha in 1962, 5 t/ha in 1978 | |||
Lime High | 30 t/ha | 1962 - 1980 | twice | 15 t/ha in 1962, 5 t/ha in 1963, 10 t/ha in 1978 |
Description: P either applied or not applied to plots. Treatments not applied in fallow years.
Application: Whole Plot
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgP/ha | 1962 - 1980 | |||||
P Fertilizer Exposure | 27.5 kgP/ha | 1962 - 1980 | annually in spring | triple superphosphate | 55 kgP/ha applied to potatoes. Not applied in fallow years 1969, 1979, 1980. |
Description: K either applied or not applied to plots. Treatments not applied in fallow years.
Application: Whole Plot
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 104 kgK/ha | 1962 - 1980 | annually in spring | muriate of potash | In 1968 and 1974, 156 kgK/ha was applied to potatoes. Not applied in fallow years 1969, 1979 or 1980. | ||
Potassium K | 104 kgK/ha | 1962 - 1980 | annually in spring | muriate of potash | In 1968 and 1974, 156 kgK/ha was applied to potatoes. Not applied in fallow years 1969, 1979 or 1980. |
Description: Spring beans seed inoculated with Rhizobium
Application: Sub Plot
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 | 1962 - 1962 | spring beans | ||||
Inoculated | 1962 - 1962 | spring beans | seed dressing |
Description: Magnesium either applied or not applied to sub-plots
Application: Sub Plot
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgMg/ha | 1974 - 1978 | |||||
Magnesium Mg | 112 kgMg/ha | 1974 - 1978 | annually in spring | magnesium sulfate | Not applied in 1975. Applied as Epsom salts 1974-1977 and as Kieserite in 1978. |
Variable | Unit | Collection Frequency |
Material | Description | Crop |
---|---|---|---|---|---|
Yield Components | t/ha | annually | AllCrops | Crop grain yields at 85% dry matter for cereals, 90% dry matter for oilseeds and fresh weight for potatoes. No straw data. | |
Soil pH | every few years | pH in water 1:2.5 soil: water suspension from topsoil (0-23cm). Sampled in autumn/winter after harvest and before sowing the next crop. | |||
Plant Available Phosphorous | ppm | Every few years | Soil | Olsen P (plant-available P) in soil, ppm in soil. |
Crop | Years Grown |
---|---|
Oats | 1981 - 1982 |
Potatoes | 1983 - |
Fallow | 1984 - |
Barley | 1985 - |
Triticales | 1986 - |
Lupins | 1987 - |
Beans | 1989 - 1990 |
Rapeseed | 1991 - 1992 |
Lupins | 1993 - 1994 |
Wheat | 1995 - 1996 |
Factors are the interventions or treatments which vary across the experiment.
Application: Whole Plot
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgP/ha | 1981 - 1996 | Control treatment 1962-1980, no fertilizer P applied. | ||||
P1 | kgP/ha | 1981 - 1996 | triple superphosphate | 25 kgP/ha applied in 1981, 1982 and 1988. Received K treatment 1962-1980, no fertilizer P applied. | |||
P2 | kgP/ha | 1981 - 1996 | triple superphosphate | 25, 50 & 25 kgP/ha applied in 1981, 1983 and 1988 respectively. Received P treatment 1962-1980, a total of 495kgP/ha. | |||
P3 | kgP/ha | 1981 - 1996 | triple superphosphate | 75, 25, 50 & 75 kgP/ha applied in 1981, 1982, 1983 and 1988 respectively. Received PK treatment 1962-1980, a total of 495kgP/ha. |
Description: Continuation of 4 treatments in Period 1. Further applications in 1981, 1982 and 1986. Amounts given are the total amounts applied, see comments for splits.
Application: Whole Plot
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 t/ha | 1980 - 1996 | |||||
Lime Low | 8.0 t/ha | 1982 - 1987 | 3 times | ground chalk | 2, 5 and 1 t/ha chalk applied 1982, 1983 and 1987 respectively. Total application 1962-1987 = 15 t/ha. | ||
Lime Medium | 9.5 t/ha | 1982 - 1987 | 3 times | ground chalk | 5, 3 and 1.5 t/ha chalk applied 1982, 1983 and 1987 respectively. Total application 1962-1987 = 24.5 t/ha. | ||
Lime High | 22.5 t/ha | 1982 - 1987 | 3 times | ground chalk | 10, 10 and 2.5 t/ha chalk applied 1982, 1983 and 1987 respectively. Total application 1962-1987 = 52.5 t/ha. |
Description: Manganese fertilizer applied to split plots
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kg/ha | 1987 - 1990 | |||||
Manganese | 0.3 kg/ha | 1987 - 1990 | annually | manganese sprays | Foliar spray applied twice a year |
Description: Sulphur fertilizer applied to split plots
Level Name | Amount | Years | Frequency | Crop | Method | Chemical Form | Notes |
---|---|---|---|---|---|---|---|
Control Exposure | 0 kgS/ha | 1991 - 1996 | |||||
Sulphur | 30 kgS/ha | 1991 - 1996 | Annual | calcium sulfate |
Variable | Unit | Collection Frequency |
Material | Description | Crop |
---|---|---|---|---|---|
Yield Components | t/ha | annually | AllCrops | Crop grain yields at 85% dry matter for cereals, 90% dry matter for oilseeds and fresh weight for potatoes. No straw data. | |
Soil pH | every few years | Soil | pH in water 1:2.5 soil: water suspension from topsoil (0-23cm). Sampled in autumn/winter after harvest and before sowing the next crop. | ||
Plant Available Phosphorous | ppm | Every few years | Soil | Olsen P (plant-available P) in soil, ppm in soil. |
Variable | Value | Reference Year | Is Estimated | Is Baseline |
---|---|---|---|---|
Coarse sand content | 14% (Percent) | 1974 | NO | NO |
Find sand content | 40% (Percent) | 1974 | NO | NO |
Silt content | 23% (Percent) | 1974 | NO | NO |
Clay content | 21% (Percent) | 1974 | NO | NO |
Soil total carbon | 1.4% (Percent) | 1974 | NO | NO |
Total soil nitrogen | 0.15% (Percent) | 1974 | NO | NO |
Soil density | 2800t/ha (tonnes per hectare) | 1905 | NO | NO |
Soil pH | 5.1 (pH) | 1962 | NO | YES |
Title (hover for a longer description) | Year of Publication | Identifier | Version |
---|---|---|---|
Crop nutrient data | |||
Rothamsted long-term liming experiment grain mineral composition | 2021 | https://doi.org/10.23637/rcs10-rltlgrain-01 |
01 |
Crop yield data - Annual | |||
Rothamsted long-term liming experiment crop yield 1962-1996 | 2020 | https://doi.org/10.23637/rcs10-rltlyields-01 |
01 |
Soil data | |||
Rothamsted long-term liming experiment soil chemical properties 1962-1996 | 2023 | https://doi.org/10.23637/rcs10-soil-01 |
01 |
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Experimental plans, lime and fertilizer treatments details 1962-1996
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1993
1990
1989
1986
1977
1976
1971
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